Page 1
Selection and Application Guide
Courtesy of NationalSwitchgear.com
Low Voltage
WL Circuit Breakers
usa.siemens.com/circuitbreakers
Page 2
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Page 3
Low Voltage Circuit Breaker
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Guidelines
These instructions do not purport to cover all details or variations
in equipment, or to provide for every possible contingency to be
met in connection with installation, operation or maintenance.
Should further information be desired or should particular problems
arise which are not covered sufficiently for the purchaser’s purpose,
the matter should be referred to the local Siemens sales office.
The contents of this catalog shall not become part of or modify
any prior or existing agreement, commitment or relationship.
The sales contract contains the entire obligation of Siemens. The
warranty contained in the contract between the parties is the sole
warranty of Siemens. Any statements contained herein do not
create new warranties or modify the existing warranty.
For additional information, please visit our website,
www.usa.siemens.com/circuitbreakers, or contact your local
Siemens Sales Office.
For technical support, please contact the Technical Support
Hotline at 1-800-333-7421, or submit a request through Online
Support: http://support.automation.siemens.com/US
For order entry, logistics, or customer service issues, please
contact the Customer Support hotline: 1-866-663-7324.
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Table of Contents
Features and benefits 4
Breaker assembly view 5
Product overview 6
Draw-out cradle assembly view
Electronic trip units (ETUs) 8 - 14
ETU models and features 8
ETU communication 10
ETU metering function 11
Alarm parameters 12
Extended relaying 12
Function overview of the ETU 13 - 14
Factory installed options 15 - 19
Ground fault module 15
Key lock-out 15
Operation counter 15
Auxiliary contacts 15
Breaker status sensor (BSS) 15
Bell alarm contact and reset coil 16
Racking handle key lock 16
Breaker push-button locks 16
Close coil 16
Spring charging handle lock 17
Rating plugs 17
Ready-to-close contact 17
Shunt trip 17
Shunt trip (continuous duty) 17
Status contact 18
Spring charging motor 18
Undervoltage release 18
Secondary disconnect 19
Isolation shutters 19
PROFIBUS or MODBUS communications 19
Dual key breaker locking 19
Cradle accessories and options 20
Arc chute cover 20
TOC (truck operated contacts) 20
MOC (mechanism operated contacts 20
7
Fixed-mounted breaker bus connectors 25
Primary lug connector kits 25
WL Catalog Numbering Overview 26
UL 489 Ratings 27 - 28
Ratings for UL 489 27
Ratings for UL 489 (non-automatic) 28
UL 489 assembled breaker catalog number 29 - 33
Interrupting rating, frame size, breaker type
and frame rating 29
Rating plug 30
Electric trip unit 30
Bell alarm, ready-to-close contacts 31
Shunt trip 31
Undervoltage release 32
Charging motor, motor switch, operations counter 32
Close coil, power metering and communications 33
Breaker locks 33
Miscellaneous options 33
UL 489 assembled breaker catalog number
(non-automatic) 34 - 37
Breaking capacity, frame size, switch type
and frame rating 34
Ready-to-close auxiliary contacts 34
Shunt trip 35
Undervoltage release 35
Charging motor switch and operation counter 36
Close coil communications 36
Switch locks 37
Miscellaneous options 37
UL 489 accessories 38
External breaker accessories 38
UL 489 cradle catalog numbers 39 - 40
UL 489 cradle accessories 41
Accessories 20 - 23
Communication power supplies 21
Handheld test device 21
Breaker display adapter (BDA) 21
Mechanical breaker interlocks 21
Metering current transformer – 3-phase window 22
Metering current transformer – single phase 22
Neutral current sensor – 4-wire residual 23
Breaker door cover 23
Door sealing frame 23
Breaker lifting device 23
Remote breaker racking device 23
Breaker hoist 23
CubicleBus modules 24
Digital input module 24
ZSI module 24
Analog output module 24
Pre-assembled CubicleBus communication cables 24
UL 1066 ratings 42 - 43
Ratings for UL 1066 42 - 43
Ratings for UL 1066 (non-automatic) 43
UL 1066 assembled breaker catalog number 44 - 48
Interrupting rating, frame size, breaker type and
frame rating 44
Rating plug 45
Electronic trip units 45
Bell alarm, auxiliary contacts 46
Shunt trip 46
Undervoltage release 47
Charging motor 47
Close coil power metering and communications 48
Breaker locks 48
Miscellaneous options 48
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WL Circuit Breaker
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Table of Contents
UL 1066 non-automatic assembled breaker
catalog numbers 49 - 52
Breaker capacity, frame size, switch type and
frame rating 49
Auxiliary contacts 50
Shunt trip 50
Undervoltage release 50
Charging motor, motor switch, operations counter 51
Close coil, communications 51
Switch locks 52
Miscellaneous options 52
UL 1066 breaker external accessories 52
UL 1066 cradle catalog numbers 53
UL 1066 accessories 54
Secondary terminal assignments 55
General wiring schematic 56 - 57
Ground fault setting 58
Metering voltage details 59
UL 489 Fixed breaker dimensions 60 - 75
UL 489 Draw-out breaker dimensions 76 - 89
UL 489 Door sealing frame dimensions 90
Ul 1066 Draw-out breaker dimensions 91 - 101
UL 1066 Draw-out fuse carriage dimensions 102 - 103
UL 1066 Door sealing frame dimensions 104
UL 1066 Draw-out dimensions 105
Spare/Replacement Parts
Trip unit options 106 - 107
Rating plugs 106
Trip unit test equipment 107
24Vdc power supply 107
Draw-out cradle assembly 108 - 110
Secondary disconnects 108
Stationary primary bus-bar disconnect terminals 109
Cradle arc chute cover 109
MOC (mechanism operated aux. contacts) 109
TOC (truck operated aux. contacts) 109
Isolation shutters 109
Locking devices 110
Mechanical interlock devices 110
Metering CT units 111
3-phase metering CTs 111
Single phase metering CTs 111
Ground fault and current sensors 112
Circuit breaker accessories 113 - 116
Shunt trip releases 113
Auxiliary switches 113
Bell Alarm switches 113
Ready to close switch 113
Operation counter 113
Undervoltage trip release 114
Signal contactor for UV trip 114
Closing coil 114
Spring charging motor 115
UL 1066 Internal contact replacement kit 115
Internal phase sensor 115
UL1066 Circuit breaker arc chute replacement kit 115
Circuit breaker finger cluster replacement kit 116
Circuit breaker bus connectors (fixed mounted) 116
Circuit breaker fix mount optional metric hardware 116
Options and accessories 117 - 118
Locking devices/sealing caps & padlocking provisions 117
Breaker locking devices 118
Accessory components
WL fuse replacement kits 118
Options and accessories 119
Mushroom Head Emergency Open button
Door sealing frame
Plexiglass breaker cover
Breaker lifting device
Breaker manual charging handle replacement
Breaker shaft extension
Breaker maintenance grease
Breaker replacement feet
WL Circuit Breaker certified test report
Wire for N + GF CTs from X8.11 & 12 to electronic trip
Cubicle-bus internal wiring
Return to factory shipping cartons for breaker only
Communication components 120
Breaker communications module
Breaker status sensor
External I/O CubicleBus module
Cables for CubicleBus modules
External Communications devices
Technical support literature
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WL Circuit Breaker
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Introduction
Businesses are becoming increasingly more intelligent about
the way they consume energy. Industrial and Commercial energy
consumers are continuously looking for practical and efficient
methods of measuring their energy usage while simultaneously
ensuring any possible downtime is minimized. At Siemens we
understand those needs and we have developed products and
solutions to help energy consumers achieve their goals.
One of our solutions begins with our world-class WL Circuit
Breakers. The WL line-up of breakers developed by Siemens
combines decades of patented circuit breaker protection
experience with the latest technology in circuit breaker
performance and communication.
A good example of our innovative technology is, Dynamic
Arc-Flash Sentry® (DAS). DAS is a solution that allows users
the ability to automatically lower the down-stream available
fault current when facility personnel are nearby the electrical
equipment. Helping our customers provide a safer work-place
environment is an important part to our overall solutions.
Other valuable aspects that complement our solutions are the
WL circuit breaker’s ability to gather energy and environmental
data and send it to a central or remote monitoring network
system. You’ll find these capabilities and more when you take
a closer look at WL circuit breakers features within this guide.
WL Circuit Breaker features and benefits
• 3 frame sizes: Three frame sizes that cover a wide range of
continuous current ratings allow for flexible exchange of
breakers to other compartments and reducing the footprint
of the breaker enclosures.
• Ready-to-close indication: Built-in check points of the
breakers mechanical operator provide an additional layer of
safety and external controls by inhibiting the breaker from
closing until certain conditions are satisfied.
• 100% rating: All model breakers are designed for continuous
operation at their maximum current ratings without de-rating
the frame.
• High-efficiency: Low loss of energy flowing through the
breaker reduces the operating costs.
• Bi-directional feed: Top or bottom supply feed without any
hardware configuration changes.
• Rogowski coil sensing: Full range sensing without tap terminals
or exchanging sensors to match load change requirements.
• Modular trip unit: Upgrading to a higher or lower
current rating, adding ground fault, power monitoring
or communication is cost effective and expandable
using separately available modules.
• Common accessories: Interchangeable accessories for all
frame sizes makes upgrading easy and readily available.
Practical solution
Applications
The WL line of power breakers are protecting electrical
distribution applications like waste water treatment, industrial
plants, hospitals, transportation systems and data centers just
to name a few. Yes, mission critical applications trust the Siemens
WL circuit breakers to operate safe and reliably. The compact
modular design provides higher power density in a section or
line-up of distribution gear. Components like spring-charging
motor, shunt trips, and trip units are common across the entire
line of breakers. That allows users the ability to stock fewer
spare parts or exchange options if necessary. Common options
and accessories also make learning how to order, maintain
and operate the WL much easier than most breakers on the
market today.
WL circuit breakers are manufactured and performance tested
to comply with UL489 and UL1066 standards for listed products.
UL/CSA 489 Listed type WL low voltage insulated case circuit
breakers are generally intended to provide service entrance, feeder,
and branch circuit protection in accordance with UL/CSA 489
Standard for Safety for Molded-Case Circuit Breakers, Molded-Case
Switches, and Circuit-Breaker Enclosures. This versatile family
of insulated case circuit breakers is acceptable for use within
low-voltage switchboards (i.e. UL 891), low-voltage motor control
centers (i.e. UL 845), and other types of industrial control equipment
(i.e. UL 508 series). Certain options and maintenance capability
may be limited in comparison to the UL1066 Listed circuit breakers.
UL file numbers E231263, E236091 and E236299 apply.
UL 1066 Listed type WL low voltage power circuit breakers are
generally intended to provide main and feeder circuit protection
in accordance with UL1066 Standard for Safety for Low-Voltage
AC and DC Power Circuit Breakers Used in Enclosures. Presently,
there is not an equivalent CSA standard to UL 1066, and therefore
these circuit breakers do not carry a CSA listing mark. These circuit
breakers are constructed in compliance with ANSI/IEEE C37.13, and
performance tested in accordance with ANSI C37.50. Throughout
this document any reference to UL1066 will also mean ANSI C37
Certified. This versatile family of power circuit breakers is acceptable
for use within low voltage switchgear (i.e. ANSI/IEEE C37.20.1,
ANSI/IEEE C37.20.7, and UL 1558), low voltage switchboards (i.e.
UL 891), low voltage motor control centers (i.e. UL 845), and other
types of industrial control equipment (i.e. UL 508 series). Certain
options and ratings may be limited may be limited in comparison to
the UL/CSA 489 Listed circuit breakers. UL file numbers E240124,
E240232, E240233 and E236299 apply.
4 WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Breaker Assembly View
6
5
4
Exterior breaker features
1. Secondary contacts
2. Charging handle
3. Centralized operator panel
11
12
13
4.
Integral racking handle with position indicator
5. Trip unit with LCD
6. Arc chutes
1
1
2
3
2
10
9
8
7
Interior breaker features
1. Remote closing coil
2. Second shunt trip or UV release
3. Auxiliary switch
4. Automatic charging motor
5. Operation counter
6. Operating mechanism
7. Electronic trip unit (ETU)
3
4
5
6
8. Optional ground fault module with alarm
and trip functions
9. Interchangeable current rating plug
10. Breaker status sensor (BSS)
11. Bell alarm contact with remote reset
12. Shunt trip coil
13. Ready-to-close-contact
5WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Superior individual products for low-voltage power distribution systems
21
22
23
24
3
2
4
5
6
7
8
9
1
11
19
25
10
18
12
17 15
13
20
16 14
1. Guide Frame (for drawout version only)
2. Vertical to Horizontal BUS Connector
3. Position Signaling Switch
4. Breaker / Guide Frame Grounding Contact
5. Shutter (locking)
6. MODBUS or PROFIBUS Communications
7. External CubicleBUS I/O Module
8. Plug-In Open and Closed Solenoids)
9. Multiple Secondary Connections
6 WL Circuit Breaker Selection and Application Guide
10. Auxiliary Switch Block
11. Door Sealing Frame
12. Interlocking Set Base Plate
13. Protective Cover for OPEN/CLOSE Buttons
14. Multiple Key Locking Accessories
15. Single Bolt Motor Operator Installation
16. Operations Counter
17. Breaker Status Sensor (BSS)
18. Complete Trip Unit Family
19. Remote Reset
20. Breaker Data Adapter (BDA) for
Internet Connection
21. Multi Angle LCD Module
22. Ground Fault Protection Module
23. Rating Plug
24. Metering Function (+ wave forms
and harmonics)
25. Circuit Breaker
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WL Circuit Breaker
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Draw-out Cradle Assembly View
1
3
Standard cradle
1. Stationary secondary disconnect
2. Primary disconnects
3. Cradle frame assembly for draw-out breakers
7
6
2
1
1
2
5
4
Cradle accessories
1. Mechanical interlock (not shown)
2. Isolation shutters
3. Mechanism operated contact switches (MOC)
4. Dual key-lock location
3
5. Breaker position switches (TOC)
6. Communication module location (COM 16 or COM 15)
7. Optional arc chute cover (not shown)
7WL Circuit Breaker Selection and Application Guide
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Electronic Trip Unit (ETU)
Electronic trip units (ETUs)
Power system protection is necessary to treat common types of
abnormal occurrences, such as overloads or faults that can lead
to electrical power system failure.
The methods for detecting and clearing such abnormalities
and restore to normal operation is an engineered technique.
Adequate protection requires constant measurements of certain
system quantities, such as voltages and currents, comparing
those system quantities, or some combination of the quantities,
to a threshold setting computed by a systems engineer and
set into an electronic trip unit like those available on the WL
breakers. It’s equally important for power system protection
to perform under normal operating conditions. If the above
thresholds are set too low the power may be interrupted
unnecessarily causing loss of productivity or safety provisions.
The WL circuit breaker offers a practical means of setting
power system protection through vast selectivity available in
its Electronic Trip Unit (ETU). WL ETUs have a wide range of
protective settings for implementing simple or complex
coordination schemes and configuring reliable system protection.
ETU enhanced features
• Extended Instantaneous Protection (EIP): Allows the entire
range of WL ampacities to be applied at the withstand rating
of the breaker with minus 0% tolerance; that means no
instantaneous override whatsoever. EIP further enables the
circuit breaker to be applied up to the full interrupting rating
of the breaker on systems where the available fault current
exceeds the withstand rating, even with LS-only trip units.
• Dynamic Arc-Flash Sentry (DAS): Allows you the ability to
execute a faster coordinated trip condition should an arc
fault event occur while personnel are within the arc flash
boundary. When the presence of personnel is no longer in
the arc flash boundary, DAS will default back to maintaining
your selective trip coordination through time delay functions.
This is like toggling between two trip units on one breaker.
DAS can be activated by a simple contact closer, so a wide
range of activation devices can be used to enable DAS.
4
• Selectable I
over from an I
t: ETU745 and 776 make it possible to switch
2
t to an I4t inverse-time function for overload
protection. This selectivity increases optimization of
coordinated overload protection when overload fuse
protection is also provided.
amps and the long-time delay is set to 10 seconds, a fault current
of 12,000 amps (6 x 2000) will cause the breaker to trip after
10 seconds. Long-time is an inverse of I
2
t ramp function. This
means the higher the current, the shorter the time the circuit
breaker will remain closed. An Alarm LED indicator will flash
during the delay period and a separate “Trip L” indicator may
turn on if the breaker trips on long-time function.
Short-time trip
The short-time pickup adjustment is used to set the level of
high current the breaker will carry for a short period of time
without tripping. This adjustment is set in multiples of the
value of the rating plug (Ir). Together with the short-time delay,
this adjustment allows downstream breakers time to clear short
circuit faults without tripping upstream breakers. Short-time
delay is used to set the time interval the breaker will wait before
responding to the current value selected by short-time pickup.
2
There are two modes of operation: fixed and I
t. The I2t delay
has the characteristic of being inversely proportional to the
square of the magnitude of the current. This means higher
overcurrent conditions have shorter delays. An Alarm LED
indicator may flash during the delay period and a separate
“Trip S” indicator will turn on if the breaker trips on short-
time function.
Instantaneous trip
The instantaneous pickup adjustment is used to set the current
level at which the breaker will trip without an intentional
time delay. Non-delayed tripping as a result of severe over-
current minimizes potential damage to the electrical system
and equipment.
Ground fault
The ground fault pickup adjustment is used to set the level of
ground current at which circuit interruption will be initiated.
Together with ground fault delay, this adjustment allows
selective tripping between main and feeder or downstream
breakers.
The ground fault delay adjustment is used to set the time interval
(in seconds) the breaker will wait before responding once the
ground fault pickup level has been reached. The available ground
2
fault delay settings available are: inverse time (I
t) or fixed delay.
ETU basic functions
Long-time trip
The long-time delay adjustment is used to set the tripping delay
of the circuit breaker based on the magnitude of the overcurrent
condition (6 times l
8 WL Circuit Breaker Selection and Application Guide
). For example if the rating plug is 2000
r
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Electronic Trip Unit (ETU)
ETU models and features
Features and characteristics ETU745 ETU748 ETU776
Long-time overcurrent protection (L) X X X
Short-time delayed overcurrent protection (S) X X X
Instantaneous overcurrent protection (I) X X
Neutral conductor protection (N) X X X
Ground fault protection (G) O O O
Selectable neutral protection X X X
Defeatable short-time protection X X
Defeatable instantaneous protection X X
Select
able thermal memory
Zone selective interlocking X X X
Select
Adjustable instantaneous pick-up X X X
Selectable I
Adjustable short-time delay and pick-up X X X
Selectable and adjustable neutral protection X X X
Dual pr
Dynamic arc-flash sentry (DAS) X
Ext
Parameterization by rotary switches X X
Parameterization by communication (absolute values) X
Parameterization by menu/keypad (absolute values) X
Remote parameterization of the alarm functions X
Remote parameterization of the relay functions X
Alphanumeric display O O X
Graphical display X
Power metering function O O O
Communication via PROFIBUS-DP O O O
Communication via the MODBUS O O O
Communication via the Ethernet (BDA) O O O
2
able I
t or fixed short-time delay X X X
2
t or I4t long-time delay X X X
otective setting capability X
ended instantaneous protection (EIP)
X
X
X
X
X
X
(X) = standard feature, (O) = optional feature
9WL Circuit Breaker Selection and Application Guide
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Electronic Trip Unit (ETU)
ETU communication
The ETU uses a Siemens proprietary communication network
called CubicleBus. The CubicleBus network ensures all Siemens
devices are able to transmit data reliably and efficiently. The ETU
can not be connected directly any other network so the use of
converters are necessary to allow communication between the
ETU and the outside world. The WL has three types of converters
to allow communication between the ETU and computer type
equipment. The three converts are:
• PROFIBUS (COM15)
• ModBus (COM16)
• HTML or TCP/IP (BDA)
The WL PROFIBUS converter is model ‘COM15.’ The COM15 device
acts as an interface between the WL breaker and the information
environment. A joint device master file (GSD) can be used for
integrating WL circuit breakers in a PROFIBUS-DP network. The
advantage of this joint communication profile is that the
same software can be used for automation, monitoring and
control systems.
The WL ModBus converter is model ‘COM16’. The COM16 device
enables the WL breaker to be connected to any Modbus master
network. Universal Modbus mapping can be used to allow custom
monitoring and controls with a centralized monitoring system.
The Modbus port is configured for RS485 connectivity and
can easily be daisy-chained to several WL breakers to create a
serial-network suitable for connecting to a LAN or WAN network.
The WL HTML or TCP/IP converter is called ‘BDA.’ The BDA
is a microcomputer with an embedded Linux operating
system running a web server application. The HTML pages
and JAVA codes are stored internal to the BDA and can be
accessed with an external PC web browser. All of the viewable
web pages are stored in the BDA. The BDA communicates to the
ETU through a front connected ribbon-cable. The PC accesses
the BDA through an integral DB-9 serial port or an RJ45
Ethernet port.
All three converters require a 24VDC Class 2 power supply.
See External Accessories for more information on available
power supplies.
10 WL Circuit Breaker Selection and Application Guide
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Electronic Trip Unit (ETU)
Power metering function
In addition to excellent protection capabilities, the WL ETU has
unparalleled power metering functionality. True RMS current
sensing for metering is obtained from the same current sensors
Measured value Value range Accuracy
Currents Ia, Ib, Ic, In 30 ... 8000A ± 1%
Ground-fault current Ig (measure with external Gnd transformer) 100 ... 1200A ± 5%
Line-to-line voltages Vab, Vbc, Vca 80 ... 120% Vn ± 1%
Line-to-neutral voltages Van, Vbn, Vcn 80 ... 120% Vn ± 1%
Average value of phase-to-phase voltages V L-L AVG 80 ... 120% Vn ± 1%
Apparent power kVA per phase 13 ... 8000kVA ± 2%
Total apparent power KVA 13 ... 24000kVA ± 2%
Active power kW per phase -8000 ... 8000kW ± 3% (power factor > 0.6)
Total active power kW total -24000 ... 24000kVA ± 3% (power factor > 0.6)
Reactive power kvar -6400 ... 6400kvar ± 4% (power factor > 0.6)
Total reactive power kvar -20000 ... 20000kvar ± 4% (power factor > 0.6)
Power factor per phase -0.6 ... 1 ... 0.6 ± 0.04
Power factor total -0.6 ... 1 ... 0.6 ± 0.04
Demand of currents Ia, Ib, Ic 30 ... 8000A ± 1%
Average demand of 3-phase current 30 ... 8000A ± 1%
Demand kWD per phase 13 ... 8000kW ± 3% (power factor > 0.6)
kW demand 3-phase active power kWD total 13 ... 8000kW ± 3% (power factor > 0.6)
kVA demand kVA total 13 ... 8000kVA ± 2%
kVAR demand kVAR per phase 13 ... 8000kVA ± 2%
kVAR demand total -24000 ... 24000kvar ± 4% (power factor > 0.6)
kWhr imported 1 ... 10000MWh ± 2%
kWhr exported 1 ... 10000MWh ± 2%
kVARh imported 1 ... 10000Mvarh ± 4%
kVARh exported 1 ... 10000Mvarh ± 4%
Frequency 15 ... 440 Hz ± 0.1 Hz
Total harmonic distortions for current and voltage 2 ... 100% ± 3% from the meas. range up to the 29th harmonic
Phase unbalance for current and voltage 2 ... 150% ± 1%
used for overload protection. ETU power metering can measure
the following:
Potential transformers (PTs) are required to step down the
supply voltage to a level that is suitable for local input
connection to the breaker. PTs must be wired to the secondary
connections of the breaker and configured for three-phase,
three-wire or three-phase, four-wire supply system. The
measured values can be sent to a central database for
future power analysis or consumption reports.
Metering is not field installable – it must be configured in
the initial breaker purchase.
Event log
The event log is very extensive. Information regarding the
list of events can be found in the WL operation manual or
communication guide. Some of the event log categories are:
• Warnings
• Trip Logs
• Set-points
• Maintenance Detail
• CubicleBus Conditions
• Waveform Displays
11WL Circuit Breaker Selection and Application Guide
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Electronic Trip Unit (ETU)
Alarm parameters
The metering function includes the following alarm
set-point functions:
Alarm function Setting range Possible delay
Overcurrent 3 ... 10000A 0 ... 255 s
Overcurrent – ground fault 3 ... 10000A 0 ... 255 s
Overcurrent – N-conductor 3 ... 10000A 0 ... 255 s
Phase unbalance – current 5 ... 50% 0 ... 255 s
Demand – current 3 ... 10000A 0 ... 255 s
Total harmonic distortion – current 0 ... 50% 5 ... 255 s
Undervoltage 100...1200V 0 ... 255 s
Overvoltage 200...1200V 0 ... 255 s
Phase unbalance – voltage 5 ... 50% 0 ... 255 s
Total harmonic distortion – voltage 0 ... 50% 5 ... 255 s
Crest factor 0.01 ... 25.5% 0 ... 255 s
Form factor 0.01 ... 25.5% 0 ... 255 s
Active power in normal direction 1 ... 10000kW 0 ... 255 s
Active power in reverse direction 1 ... 10000kW 0 ... 255 s
Leading power factor -0.999 ... 1 0 ... 255 s
Lagging power factor -0.999 ... 1 0 ... 255 s
Demand – active power 1 ... 10000kW 0 ... 255 s
Apparent power 1 ... 10000kVA 0 ... 255 s
Reactive power in normal direction 1 ... 10000kvar 0 ... 255 s
Reactive power in reverse direction 1 ... 10000kvar 0 ... 255 s
Demand – apparent power 1 ... 10000kVA 0 ... 255 s
Demand – reactive power 1 ... 10000kvar 0 ... 255 s
Underfrequency 40 ... 70 Hz 0 ... 255 s
Overfrequency 40 ... 70 Hz 0 ... 255 s
Extended relaying
Protective relays included with the metering function can
monitor the following criteria and initiate a trip if the values
are exceeded.
Protective relay function ANSI device number Setting range Possible delay
Current unbalance 46 5 ... 50% 1 ...15 s
Total harmonic distortion - current 81 THDC 0 ... 50% 5 ...15 s
Voltage unbalance 47 5 ... 50% 1 ...15 s
Undervoltage 27 100 ... 1100V 1 ...15 s
Overvoltage 59 200 ... 1200V 1 ...15 s
Total harmonic distortion - voltage 81 THDV 0 ... 50% 5 ...15 s
Direction of phase rotation 47N
Active power in normal direction 32 1 ... 10000kW 1 ...15 s
Active power in reverse direction 32R 1 ... 10000kW 1 ...15 s
Under frequency 81U 40 ... 70 Hz 1 ...15 s
Over frequency 81O 40 ... 70 Hz 1 ...15 s
12 WL Circuit Breaker Selection and Application Guide
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ETU Function Overview
Basic functions ETU745
Long-time overcurrent protection
Function can be disabled –
Setting range I
0.65, 0.7, 0.8, 0.9, 1
Switch-selectable overload protection (I
Setting range of time delay class tR at I2t
(seconds) 2, 3.5, 5.5, 8, 10,
14, 17, 21, 25, 30
L
Setting range of time delay t
(seconds) 1, 2, 3, 4, 5
Thermal memory
Phase loss sensitivity set t
Neutral protection
Function can be disabled (via slide switch)
N
N-conductor setting range I
Short-time overcurrent protection
Function can be disabled (via rotary switch)
Setting range I
3, 4, 6, 8, 10, 12
Setting range of time delay t
S
(constant time in seconds) 0.02 (M), 0.1, 0.2,
0.3, 0.4, OFF
Setting range of time delay I
(seconds) 0.1, 0.2, 0.3, 0.4
Zone Selective Interlocking (ZSI) function per CubicleBUS module
Instantaneous overcurrent protection
Function can be disabled
Extended Instantaneous Protection Instantaneous is active when disabled
I
Setting range I
0.8 x I
Ground fault protection
Trip and alarm function
Detection of the ground fault current
by residual summing method
Detection of the ground fault current
by direct sensing method
Setting range of the Ig for trip A, B, C, D, E (100 ... 1200A)
G
Setting range of the Ig for alarm A, B, C, D, E (100 ... 1200A)
Setting range of the time delay t
(fixed seconds) 0.1, 0.2, 0.3, 0.4, 0.5
Setting range time delay t
ZSI ground function per CubicleBUS module
= In x ... 0.4, 0.45, 0.5, 0.55, 0.6,
R
2
t or I4t dependent function)
at I4t
R
(via slide switch)
=20 ms (M)
sd
= In x ... 0.5 ... 1
N
= In x ... 1.25, 1.5, 2, 2.5,
sd
, fixed
sd
at I2t
sd
= In x ... 1.5, 2.2, 3, 4, 6, 8, 10, 12
i
2
O (field installable module)
g
at I2t 0.4, 0., 0.3, 0.4, 0.5
g
= Max,
cw
1
Extended Instantaneous Protection (EIP) allows the WL breaker to be applied at the withstand rating available
of the breaker with minus 0% tolerance; that means no instantaneous override whatsoever. EIP further – not available
enables the circuit breaker to be applied up to the full instantaneous rating of the breaker on systems
where the available fault current exceeds the withstand rating.
2
Ground Fault Module cannot be removed after installation.
optional
13WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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ETU Function Overview
Basic functions ETU748 ETU776
Long-time overcurrent protection
Function can be disabled – –
Setting range I
0.6, 0.65, 0.7, 0.8,
0.9, 1
Switch-selectable overload protection
(I
Setting range of time delay class tR at I2t
2
t or I4t dependent function)
L
(seconds) 2, 3.5, 5.5, 8, 10, 2...30 (step; 0.1s)
14, 17, 21, 25, 30
Setting range of time delay tR at I4t
(seconds) 1, 2, 3, 4, 5 1...5 (step; 0.1s)
Thermal memory
Phase loss sensitivity at t
Neutral protection
Function can be disabled
N
N-conductor setting range I
Short-time delayed overcurrent protection
Function can be switched ON/OFF
Setting range I
3, 4, 6, 8, 10, 12 (step: 10A)
Setting range of time delay t
(seconds) M, 0.1, 0.2, 0.3, 0.4 M, 0.08... 04, OFF (step: 0.001s)
Switch-selectable short-time delay
short-circuit protection
(I
S
2
t dependent function) (via rotary switch) (via keypad or communications)
Setting range of time delay I
(seconds) 0.1, 0.2, 0.3, 0.4 0.1... 0.4 (step 0.001s)
Zone Selective Interlocking (ZSI) function per CubicleBUS module per CubicleBUS module
Instantaneous overcurrent protection
Function can be disabled,
Extended Instantaneous Protection
is enabled when OFF –
I
Setting range I
Ground fault protection
Trip and alarm function
Detection of the ground fault current
by residual summing method
Detection of the ground fault current
by direct sensing method
Setting range of the Ig for trip A, B, C, D, E A... E (step: 1A)
Setting range of the I
G
Setting range of the time delay t
(seconds) 0.1, 0.2, 0.3, 0.4, 0.5 0.1...0.5 (step: 0.001s)
Switch-selectable
ground fault protection
(I
2
t / fixed)
Setting range time delay tg at I2t 0.1, 0.2, 0.3, 0.4, 0.5 0.1...0.5 (step: 0.001s)
ZSI ground function per CubicleBUS module per CubicleBUS module
= In x ... 0.4, 0.45, 0.5, 0.55, 40-100% of
R
I
(Adjustable in Amps1)
n
(via slide switch) (on/off via keypad or communications)
=20 ms (M) (on/off via keypad or communications)
sd
(via slide switch) (on/off via keypad or communications)
= In x ... 0.5 ... 1 OFF 0.5 ... 2 OFF
N
(via rotary switch) (on/off via keypad or communications)
= In x ... 1.25, 1.5, 2, 2.5, 1.25... 0.9 x Icw = max
sd
, fixed
sd
at I2t
sd
2
(via keypad or communications)
= In x ... Ii = I
i
3
O (field installable module) O (field installable module)
= EIP 1.5 ... 0.8 x Ics = MAX OFF = Icw = EIP
cw
for alarm A, B, C, D, E A... E (step: 1A)
g
g
1
Note: ETU776 settings via WLBDA, Modbus, or Profibus: 1A steps
Via ETU Keypad: Below 1000A: 10A steps
1000A-1600A: 50A steps
1600A-10000A: 100A steps
Above 10000A, 1000A steps
2
Extended Instantaneous Protection (EIP) allows the WL breaker to be applied at the withstand rating available
of the breaker with minus 0% tolerance; that means no instantaneous override whatsoever. EIP further – not available
enables the circuit breaker to be applied up to the full instantaneous rating of the breaker on systems
where the available fault current exceeds the withstand rating.
3
Ground Fault Module cannot be removed after installation.
4
Notes:
M = indicates phase loss sensitivity is enabled. LT pick-up reduced 80% when phase unbalance > 50%. ST = 20 ms
Key pad = Direct input at the trip unit.
o optional
14 WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Factory Installed Options
1
Breaker mounted options
Ground fault module
The ground fault module (GFM) is used to detect current
flowing through the grounding conductors which may present
a hazardous condition. The module can be field installed but
can’t be removed once installed. Residual sensing by phase
vector summation or direct sensing can be selected on the
module or via the setup of the ETU776. Ground fault modules
may be ordered as alarm only or as alarm and trip. Alarm will
provide a visual and communication notification. Alarm and
trip model will trip the breaker in addition to alarm notification.
Key lock-out
To lock the WL breaker in the “Open” position, an optional keylock
can be installed in the breaker. The key cylinder and lock-out
assembly are mounted in the breaker and accessible through a
knockout in the breaker front cover. The key is removable only
when the breaker is locked open. If a custom, coordinated
key/cylinder is required, order the lock provision-only. The lock
cylinder and matched key must then be ordered separately from
the respective lock manufacturer.
The compatible Kirk cylinder lock part number is C-900-301.
The compatible Superior cylinder lock part number is C-900.
Auxiliary contacts
Auxiliary contacts can be used to provide interlocking control
or remote indication of the breakers main contact position (open
or closed breaker). The Normally Open (NO) contacts are open
when the breakers main contacts are open. The Normally Closed
(NC) contacts are closed when the breakers main contacts are
open. The contacts are wired individually to the secondary
disconnects for user connectivity. See breaker wiring diagram
for supply terminal locations.
Characteristics table
Available Contact Configurations 2NO and 2NC or 4NO and 4NC
AC Operation Voltage 240VAC 50/60Hz
Continuous Current 10A
Making Current 30A
Breaking Current 3A
DC Operation Voltage 24, 125, 250VDC
Continuous Current 5A
Making Current 1.1A @ 24 or 125VDC, .55A @250VDC
Breaking Current 1.1A @ 24 or 125VDC, .55A @250VDC
Breaker status sensor (BSS)
BSS is an integrated circuit device that measures the internal
breaker temperature, monitors breaker main contact position
(open or closed), bell alarm status, shunt trip status, breaker
ready-to-close and closing spring charged status. All status
conditions and information is transmitted through the
CubicleBus network as real-time data. A COM16 (Modbus),
COM15 (PROFIBUS) or a BDA (breaker display adapter) accessory
can be used to export the BSS CubicleBus data to external computer
or monitoring equipment. See breaker wiring diagram for supply
terminal locations. Included with COM15 and COM16.
Operation counter
For monitoring the number of breaker operations (open and
close) a numerical operations counter is available. This counter
is only suitable for breakers equipped with the spring-charging
motor option. The counter mounts to the motor assembly and
will register manual and electrical breaker operations. Counter
is non-resettable up to 100,000 operations. Counter ships with
available pre-service operations for field setting to zero.
1
See page 85 for field install part numbers.
Characteristics table
Operating Voltage 24VDC
Peak Inrush Current 110mA
Max. Continuous Current 40mA
Ambient Operation Temperature -25 to 70ºC
15WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Factory Installed Options
1
Bell alarm contact and reset coil
The bell alarm contacts are mechanically activated by the trip
unit solenoid. If a breaker trip condition occurs, the bell alarm
form-C contacts will change state closing or opening a user circuit
wired to the secondary terminal block. The contacts can be locally
reset to their original position by manually resetting the breaker
trip button or through the use of a reset coil that resets the
contacts remotely. See breaker wiring diagram for supply terminal
locations. Non-automatic (manual) reset trip units can not be used
with the reset coil option.
Characteristics table
Available contact configurations Coil ratings
Remote Voltage 240VAC 50/60Hz
Reset Coil Continuous Current 5A
AC Operation Making Current 8A
Breaking Current 5A
Remote Voltage 24, 48,125 or 250VDC
Reset Coil Continuous Current 5A
DC Operation Making Current .4A @ 24, 48,125VDC, .2A @250VDC
Breaking Current .4A @ 24, 48,125VDC, .2A @250VDC
Breaker push button lock-outs
A finger or hand tool shroud option can be added to the
breaker front cover to isolate the open and close buttons
from unintentional use. Shrouds may be used in combination
or like configuration.
To isolate the open and close buttons from unintentional use,
transparent padlock covers can be installed in lieu of the shroud
option. Two padlocks may be used with a latch diameter of 3/8
inch maximum (padlocks by others).
Close coil
To remotely close the WL breaker, a close coil must be used with
a momentary electrical source. Only one close coil can be used
per breaker. Charging springs must be charged and breaker open
prior to activating the close coil. See breaker wiring diagram for
supply terminal location.
Racking handle key lock
A draw-out breaker can be key locked (optional) or padlocked
(standard not shown) in three racking positions; connect,
test or disconnect. Key lock cylinders are available in Kirk or
Superior types and uniquely keyed.
Characteristics table
120VAC Range 104 - 127VAC
Close Coil 240VAC Range 208 - 254
AC Operation Power Consumption 120W for 50ms (5% duty cycle)
Breaker closing time 50ms from point of signal
24VDC 14 - 28VDC
48VDC 28 - 56VDC
Close Coil 125VDC 70 - 140VDC
DC Operation 250VDC 140 - 280VDC
Power Consumption 120W for 50ms (5% duty cycle)
Breaker closing time 50ms from point of signal
1
See page 85 for field install part numbers.
16 WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Factory Installed Options
1
Spring charging handle lock
An optional padlock provision to prevent manual charging of the
closing springs can be installed on the breaker front cover. This
provision does not prevent electric charging of the closing springs
and the breaker can be mechanically closed if the closing spring
is charged prior to padlocking the charging handle. One padlock
may be used with a latch diameter of 3/8 inch maximum (padlock
by others).
Rating plugs
The rating plug is required to limit the downstream load current.
Use of a rating plug that exceeds the breaker frame rating will
result in a trip unit error and will trip the breaker automatically.
Rating plugs are field interchangeable.
Shunt trip
The shunt trip opens the circuit breaker instantly when energized
by a remote power source. An auxiliary contact is wired in series
with the shunt trip to remove the current from the coil after the
breaker is opened. Two shunt trip coils may be installed in a
breaker if dual supply sources or control circuits are required.
An optional status contact may be selected with the second shunt
trip to provide a signaling condition that the shunt trip has been
activated. Status contact not available with communication option.
Status condition is sent via communication instead of contact.
Characteristics table
Trip coil 120VAC range 104 - 127VAC
AC operation 240VAC range 208 - 254VAC
Power consumption 120W for 50ms (5% duty cycle)
Min. closing time 50ms from point of signal
Trip coil 24VDC range 14 - 28VDC
DC operation 48VDC range 28 - 56VDC
125VDC range 70 - 140VDC
250VDC range 140 - 280DVC
Power consumption 120W for 50ms (5% duty cycle)
Min. closing time 50ms from point of signal
Ready-to-close contact
In addition to the standard “ready-to-close” visual indicator on
the WL breaker, an optional contact can be added to remotely
monitor the ready-to-close conditions. Closing is ready if all of
the following conditions are true:
• closing spring-charged
• breaker main contacts are open
• mechanical lock-outs disabled
• racking handle seated in stored position
• electrical lock-outs disabled
Characteristics table
Ready-to- Voltage 125-240VAC, 125 -250VDC
close Continuous current 3A
contact Making current .4A @24-125VDC, 5A @120-240VAC
Breaking current .2A @24-125VDC, 3A @120-240VAC
Shunt trip (continuous duty)
The continuous duty shunt trip is available for 100% duty cycle
and can hold the WL breaker open during an electrical or manual
“close breaker” attempt (i.e. lock-out). The continuous duty trip
may be used in conjunction with a standard shunt trip solenoid
for dual control. Not available for use with UL1066 Listed breakers.
Characteristics table
Shunt trip 120 - 240 VAC range 85 - 110% of nominal
(interlock 24 - 250VDC range 70 - 126% or nominal
coil) Power consumption 15W / 15VA
Min. shunt trip actuation 60 ms
Opening time of breaker 80 ms
Smallest fuse protection rating 1A
1
See page 85 for field install part numbers.
17WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Factory Installed Options
1
Status contact
A status contact is a mechanical switch that is suitable for
monitoring an undervoltage trip or second shut trip coil
position. The contact will be wired to the secondary contacts
of the breaker for customer connections or wired to the Breaker
Status Sensor (BSS) if communications is installed on the
breaker. Contact is 1NO configured.
Characteristics table
Signaling Voltage 127 - 240VAX, 24 - 125VDC
contact Continuous current 3A
Making current 1A @24 - 125DVC, 5A @120 - 240VAC
Breaking current 1A @24 - 125DVC, 3A @120 - 240VAC
Spring-charging motor
The spring charging motor is used to automatically charge the
breakers closing spring so the breaker is suitable for closing on
command. Motor charging is typically used for remote breaker
operation or as an alternative to local manual charging. The
motor assembly can be easily installed in the field and includes
an automatic cut-off switch which disconnects the current upon
full charge of the closing spring mechanism.
Undervoltage release
In the event of loss or low level control circuit voltage, an
undervoltage release may be used to automatically open
the circuit breaker. To prevent nuisance breaker openings
from temporary voltage dips, a separate adjustable time-
delay undervoltage release is also available.
Characteristics table
Undervoltage Operating values 85 - 110% breaker can be closed,
release UVR 35 - 70% breaker will open
120 - 240VAC
Coil voltage tolerance 85 - 110% of nominal
24 - 250VDC
Coil voltage tolerance 85 - 126% of nominal
Supply voltage 120, 240VAC or 24, 48, 125, 250VDC
Power consumption 200VA inrush/ 5VA continuous
(same in Watts for DC)
Opening time
of breaker 200 ms
UVR w/o time delay
(dual setting) 80 ms or 200ms
UVR with time delay
(adjustable delay) 0.2 to 3.2 sec.
Characteristics table
Spring- 120 - 240VAC range 85 -110% of nominal
charging 24 - 240VDC range 70 - 126% of nominal
motor Power consumption 110W
Max. charging time 10 seconds
Fuse protection rating 24-60V 6A, 120-240V 3A
(slow-blow)
1
See page 85 for field install part numbers.
18 WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Factory Installed Options
1
The following items are available for WL cradles. Items are
described to highlight the functional characteristics of these
factory installed cradle options.
Secondary disconnects
Secondary disconnects are used to interconnect external breaker
control and signaling circuitry to the WL breakers factory wired
circuitry. Three types of external connection terminals are
available. 1. Screw connection, 2. Tension spring connection
and, 3. Ring lug connection. Tension spring connection terminals
are standard for fixed mounted breakers.
Characteristics table
Wire connection type Number of wires and sizes
Secondary Screw compression 1 x 14AWG or 2 x 16AWG
disconnects Tension spring compression 2 x 14AWG
Ring lug terminal 2 x 14AWG or 2 x 16AWG
PROFIBUS or MODBUS communication
PROFIBUS or MODBUS communication requires a COM15 or
COM16 converter to transmit WL breaker data to external PCs
or PLC monitoring systems. External communication connection
to either module is through a DB-9F connector.
Characteristics table
Operating voltage 24VDC
Peak inrush current 280mA
Max. continuous current 125mA
Ambient temperature -25 to 70ºC
Isolation shutters
When removing a draw-out breaker from its connected position
the primary contacts become exposed and more accessible to
personnel in the breaker compartment. Isolation shutters reduce
that accessibility to the primary terminals by automatically
closing the access ports to the primary terminals whenever
the breaker is disconnected or withdrawn. After removal of the
breaker from its compartment, the shutters may be padlocked
to inhibit manual shutter opening while breaker is not in
the compartment.
Dual key breaker locking
For draw-out breakers, a cradle-mounted breaker lockout device
can be installed with either one or two independent key cylinders.
The key is removable only when the breaker is locked open.
Cradle-mounted key locks are commonly utilized for interlocking
in open transition schemes, where paralleling certain sources is
not desirable. Siemens offers the choice of unique, uncoordinated,
Kirk and Superior key lock types. If a custom, coordinated key/
cylinder is required, order the lock provision-only. The lock cylinder
and matched key must then be ordered separately from the
respective lock manufacturer.
The compatible Kirk cylinder lock part number is C-900-301.
The compatible Superior cylinder lock part number is C-900.
1
See page 85 for field install part numbers.
19WL Circuit Breaker Selection and Application Guide
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Cradle Factory Installed Options
1
Arc chute cover
The arc chute cover is available for isolating enclosure material
or parts located above the circuit breaker where heat and
exhaust gases may exit from the breakers arc chutes. Arc chute
covers are not available for fixed mounted breakers and limited
to select draw-out breaker types.
TOC (Truck Operated Contacts)
For draw-out breaker applications a TOC device is available to
provide remote indication of the circuit breakers primary and
secondary contact connections (racking positions). When
the breaker is racked into a connected, test or disconnected
position, it activates TOC switches for external user circuits.
MOC (Mechanism Operated Contacts)
Mechanism Operated Contacts (MOC) are a cradle mounted
accessory which indicate the state of the breaker’s internal
contacts (open or closed). MOCs are typically utilized when
additional auxiliary contacts are necessary – above and beyond
the number configurable in the circuit breaker – although they
may also be used in lieu of the internal auxiliary switches. Each
a
MOC assembly includes 4 ‘
’ and 4 ‘b’ contacts. Two different MOC
assemblies are available. One version operates when the circuit
breaker is in both the “TEST” and “CONNECTED” positions, and
the other version operates only when the circuit breaker is in the
“CONNECTED” position.
Note per ANSI C37.100:
a
’ contact: a contact that is open when the main device is in the
‘
standard reference position and that is closed when the device is
in the opposite position.
b
’ contact: a contact that is closed when the main device is in
‘
the standard reference position and that is open when the device
is in the opposite position.
Characteristics table
MOC contact configurations 4NO and 4NC
AC operation Voltage 240VAC 50/60Hz
Continuous current 10A
Making current 30A
Breaking current 3A
DC operation Voltage 24, 125, 250VDC
Making current 1.1A @ 125VDC,
.55A @250VDC
Breaking current 1.1A @ 125VDC,
.55A @250VDC
TOC Switch Breaker disconnected = primary Breaker in test = primary Breaker connected = primary
and secondary contacts contacts disconnected and and secondary contacts
are disconnected secondary contacts connected are connected
Option 1 1 form C contacts 1 form C contacts 1 form C contacts
Option 2 1 form C contacts 2 form C contacts 3 form C contacts
Option 3 0 form C contacts 0 form C contacts 6 form C contacts
AC voltage 120, 240VAC
AC continuous current 10A
TOC Contact Ratings AC making/breaking current 6A@120V, 3A@240VAC
DC voltage 24, 48, 125, 250VDC
DC continuous current 6A, 1A, 1A
DC making/breaking current 6A, 0.22A, 0.11A
1
See page 85 for field install part numbers.
20 WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Accessories
Communication power supplies
For WL devices that require a 24VDC input we offer the Siemens
SITOP power supply. The SITOP power supply is a class 2 rated
devices suitable for supporting loads of 2.5 or 3.8 amps. DIN rail
mounting provision and compression wire connections included.
For loads of 2.5A maximum order part number WLSITOP25 or
WLSITOP1 for 3.8A maximum loads.
Handheld test device
To test the WL breakers ETU trip functions we offer a hand-held
tester that checks:
• Sensor continuity
• Long-time function
• Short-time function
• Instantaneous function
• Neutral and ground fault function
During a test, the device will electrically trip the circuit breaker
performing a full function test of the ETU and the trip actuator.
Cables for 120VAC power supply and ETU connection is included
with the tester. Order part number WLTS
Breaker display adapter (BDA)
The BDA can be used to read or modify the breaker ETU and
Cubiclebus parameters using a laptop, pocket PC or remote
desktop PC. Circuit breakers can be parameterized individually
using one BDA with similar or different parameters. No software
is required as the embedded software interface is through a PC
browser. Connectivity to a PC or network can be serial (RS232) or
Ethernet (TCI/IP) addressed. If the breaker ETU is energized with
24VDC control power the BDA can be powered through the
interconnecting ribbon cable. Order part number WLBDAP
Mechanical breaker interlocks
Mechanical interlock options are available for fixed or draw-out
breakers. Interlocking is managed through cable connections
between two or three breakers less than 6 meters apart. Lock
kit includes 2.0 meter interlocking cable and mechanism for
mounting to a single breaker.
For fixed breaker frame size 1 order part number WLNTLKF1
For fixed breaker frame size 2 or 3,
order part number WLNTLKF23
For draw-out breaker frame size 1, 2, or 3,
order part number WLNTLK
For alternate cable lengths, order part number
3.0 meter WLNTLWRE3
4.5 meter WLNTLWRE4
6.0 meter WLNTLWRE5
21WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Accessories
Metering current transformer 3-phase window
(cradle mounting only)
For draw-out breaker applications a three phase metering CT
is available. Termination screws are integral to the mold for
point-to-point wiring without the use of terminal blocks or
wire couplers. Metering ratios range from 800:5 to 5000:5.
CTs include mounting hardware.
For frame size 1 and 2 order part numbers:
800:5 Rating WLG800MCT2
1200:5 Rating WLG1200MCT2
1600:5 Rating WLG1600MCT2
2000:5 Rating WLG2000MCT2
2500:5 Rating WLG2500MCT2
3200:5 Rating WLG3200MCT2
For frame size 3 order part numbers:
3200:5 Rating WLG3200MCT3
4000:5 Rating WLG4000MCT3
5000:5 Rating WLG5000MCT3
Metering current transformer – single phase
A single piece housing that is compact and designed to fit around
phase or neutral bussing. Termination screws are integral to the
mold for point-to-point wiring without the use of terminal blocks
or wire couplers. Metering ratios range from 800:5 to 5000:5.
For frame size 1, 2 or 3, order part numbers:
800:5 Rating WLG800NMCT23
1200:5 Rating WLG1200NMCT23
1600:5 Rating WLG1600NMCT23
2000:5 Rating WLG2000NMCT23
2500:5 Rating WLG2500NMCT23
3000:5 Rating WLG3000NMCT23
3200:5 Rating WLG3200NMCT23
4000:5 Rating WLG4000NMCT23
5000:5 Rating WLG5000NMCT23
4W Modified Differential Ground Fault (MDGF)
For MDGF draw-out breaker applications, a three phase iron-
core CT is available. The MDGF CTs are physically the same as
the above metering CTs but the current ratio is 1200:1.
For frame size 2, breakers order part number:
1200:1 rating WLGMDGFCT2 Phase CT
For frame size 3, breakers order part number:
1200:1 rating WLGMDGFCT3 Phase CT
For frame size 2 and 3, neutral CT order part number:
1200:1 rating WLGNMDGCT23 Neutral CT
A typical application for modified differential ground fault is
‘Main-Tie-Main’ where all breakers require 3 Phase CTs and a
neutral CT.
22 WL Circuit Breaker Selection and Application Guide
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Accessories
Neutral current sensor – 4-wire residual ground fault
For 4-wire residual ground fault protection we offer neutral
current sensors with or without bus bar coupling. The sensors are
comparable to the sensors used within the breaker and connected
to the ETU. This sensor must also be wired to the ETU through
designated secondary disconnects on the breaker.
Without copper bus adapters:
3” max bus bar width order part number WLNCT2
3 - 5” bus bar width order part number WLNCT3
With copper bus adapters:
3” max bus bar width order part number WLNCT2CB
3 - 5” bus bar width order part number WLNCT3CB
Breaker lifting
The breaker lifting yolk is designed to transport the WL breaker
when using a hoist or other lifting equipment. The device is
expandable to conform to all three WL frame sizes and easily
attaches to specified lift points on the breaker. Order part
number WLLFT
Remote Breaker Racking Device
Provides the ability to safely rack WL breakers into the Connect,
Test and Disconnect positions from 30 feet away from the breaker,
allowing the operator to be outside the arc flash boundary which
provides additional personnel protection. WLRBRD
Breaker door cover
A transparent hinged door cover is available to provide IP55
protection. Provision for padlocking included. Fits frame size 2
and 3 breakers. Order part number WLPGC
Door sealing frame
For openings around the door cutout of the breaker, this rubber
door trim is available. For frame size 2 and 3 breakers only.
Order part number WLDSF
Door Bracket Kit, Remote Breaker Racking Device
In order to mount the remote breaker racking device on existing
gear, this retrofit door bracket kit and the WLRBRDTEMPL must be
ordered. WLRBRDKIT
Remote Breaker Racking Device Door Bracket Install Template
In order to mount the remote breaker racking device on existing
gear, this mounting template and the WLRBRDKIT must be
ordered. WLRBRDTEMPL
Breaker Hoist
This device acts as a hoist for the WL breaker, allowing it to be
carried using a forklift or similar device. WLHOIST
23WL Circuit Breaker Selection and Application Guide
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Accessories
CubicleBUS modules
External CubicleBUS modules enable the WL Circuit Breaker a
way to interface with external switchgear controls or building
management systems. They can be used, for example, to activate
analog displays or devices, transmit circuit breaker status and
cause of trip, or read external device control signals. One
module is suitable for zone-selective interlocking main and
branch breakers.
Three different CubicleBUS modules can output data from the
CubicleBUS system (two digital output modules and one analog
output module). A digital input module can transmit data from
the switchgear or system to a PROFIBUS/MODBUS master device
like a power meters or logic controllers.
Digital Output Module with Rotary Switch – The digital output
module can be used to output six events. These events can be
warnings or trips and can be used for external annunciation or
control. The load shedding and load restoring signals can enable
a load to be switched ON or OFF automatically. Voltages of up
250V AC/DC are possible. The relay contacts are isolated.
Relay Digital Output Module: Order part number WLRLYCUB
ZSI module
To use the ZSI function with the WL Circuit Breaker, the external
CubicleBUS ZSI module must be implemented. The zone selective
interlocking (ZSI) module provides the complete range of
selectivity with the short delay time of tZSI = 50 ms, irrespective
of the number of levels and the location of the short-circuit in
a distribution system. Its benefits become even more apparent,
the higher the number of levels in large systems and the longer
the resulting delay times. By shortening the time, the ZSI module
significantly reduces stress and damage in the event of a short-
circuit in the switchgear.
Zone Selective Interlocking Module: Order part number WLZSIMD
Analog output module
The analog output module can be used to output the most
important measured values sent via the CubicleBUS to analog
indicators (e.g. analog meters) in the switchgear cubicle door.
Each analog output module has four channels for this purpose.
The signals are available at two physical interfaces: a 4 ... 20mA
and a 0 ... 10V interface.
Digital input module
The digital input module enables up to six additional binary
signals (24V DC) to be connected. Signals, such as breaker
status, arc-flash current reduction, over-temperature conditions
or control circuit status switchgear, can be transmitted directly
to the power monitoring network.
A total of 6 inputs are available in the “BUS Input” Switch
position. Six inputs are also available if the rotary switch is in
the “Parameter Switch” position, although the first input causes
the active parameter set to change. If the connected ETU does
not have two parameter set capability (e.g. ETU745 or ETU748),
this input can also be used without any restrictions.
Digital Input Module: Order part number WLDGNCUB
Analog output module: order part number WLANLGCUB
Pre-assembled CubicleBUS communication cables
(RJ45-M connections)
1 meter length: order part number WLCBUSCABLE1
2 meter length: order part number WLCBUSCABLE2
4 meter length: order part number WLCBUSCABLE4
9 meter length: order part number WLCBUSCABLE9
24 WL Circuit Breaker Selection and Application Guide
Page 27
WL Circuit Breaker
Courtesy of NationalSwitchgear.com
Accessories
Fixed-mounted breaker front bus connectors
Front connector bus kits are available for adapting WL breaker
primary mounting stabs to a standard NEMA bussing and bolt-
hole pattern. NEMA bolt connection is accessible from the front
of the breaker for ease of installation or removal of breaker inside
an enclosure. Kit includes the required bus and hardware for
mounting one 3-pole set of adapters to a breaker.
Frame size 1, 1200A frame, 85 kAIC at 480V, order part number WLH1F12CONUL
Frame size 2, 1600A frame, 100kAIC at 480V, order part number WLL2F16CONUL
Frame size 2, 2000A frame, 100kAIC at 480V, order part number WLL2F20CONUL
Frame size 2, 3000A frame, 100kAIC at 480V, order part number WLL2F30CONUL
Frame size 3, 4000 to 5000A frame, 100kAIC at 480V, order part number
WLL3F50CONUL
Mechanical lug connector kits are available for connecting 800 to
2000A WL front connector bus kits (sold separately) to power cables.
Frame size 1, 1200A max, 65 kAIC at 480V, order part number WLS2P12CONUL
Frame size 2, 1600 to 2000A max, 65kA 65 kAIC at 480V, order part number
WLS2P20CONUL
Fixed mounted breaker rear bus connector kits are available
for adapting WL breaker primary mounting stabs to a standard
NEMA bussing and bolt-hole pattern. Adapters also rotate the
primary breaker connections by 90° for vertical bus arrangement.
Bolted connections are accessible from the rear of the breaker.
Kit includes the required bus and hardware for mounting one
3-pole set of adapters to a breaker.
Frame size 1, 1200A frame, 85 kAIC at 480V, order part number WLH1R12CONUL
Frame size 2, 1600A frame, 100 kAIC at 480V, order part number WLL2R16CONUL
Frame size 2, 2000A frame, 100 kAIC at 480V, order part number WLL2R20CONUL
Frame size 2, 2500A frame, 100 kAIC at 480V, order part number WLL2R25CONUL
Frame size 2, 3000A frame, 100 kAIC at 480V, order part number WLL2R30CONUL
Frame size 2, 800A to 3000A frame,
150 kAIC at 480V rated breaker only order part number WLC2R30CONUL
Frame size 3, 4000A to 5000A frame,
100 kAIC at 480V order part number WLC3R50CONUL
25WL Circuit Breaker Selection and Application Guide
Page 28
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
WL Catalog Numbering Overview
Digit Number
Interrupting Class
Frame Size
Breaker Type
Number of Poles
Frame Ampere Rating
Rating Plug
Electronic Trip Unit (ETU)
Bell Alarm, Breaker Ready-to-Close, Auxiliary Contacts
Shunt Trip
Undervoltage Release (with or without time delay) or 2nd Shunt Trip
Charging Motor, Motor Switch, Operations Counter
Close Coil, Power Metering and Communications
Breaker Locks
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15
Miscellaneous Options
26 WL Circuit Breaker Selection and Application Guide
Page 29
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
Ratings for UL489 Listed Breakers
WL frame ratings – frame size 1 800A 1200A 1600A 2000A
Rating Class S H L S H L S H L S H L
Interrupting current frame Ics (kAIR RMS) 50/60 Hz 240VAC 65 85 100 65 85 100 65 85 100 65 85 100
480VAC 65 85 100 65 85 100 65 85 100 65 85 100
600VAC 65 65 65 65 65 65 65 65 65 65 65 65
Short-time current Icw (kA RMS) 0.4 sec. 65 65 65 65 65 65 65 65 65 65 65 65
Extended instantaneous protection rating (kA RMS) 480VAC 65 85 100 65 85 100 65 85 100 65 85 100
600VAC 65 65 65 65 65 65 65 65 65 65 65 65
Close and latch rating (kA RMS) 65 65 65 65 65 65 65 65 65 65 65 65
Applicable rating plug range 200 - 800A 200 - 1200A 200 - 1600A 200 - 2000A
Minimum enclosure dimension (in.) 22Wx15Hx19.5D 22Wx15Hx19.5D 22Wx15Hx19.5D 22Wx15Hx19.5D
Mechanical make-time (ms) 35 35 35 35
Mechanical break-time (ms) 34 34 34 34
Electric close make-time (ms) 50 50 50 50
Electric trip/ UV break-time (ms) 40/73 40/73 40/73 40/73
Electric trip and reclose interval (ms) 80 80 80 80
Mechanical duty cycles (no maint.) 7500 7500 7500 7500
Electrical duty cycles (no maint) 7500 7500 7500 7500
Draw-out breaker efficiency (Watts loss at I
Fixed-mount breaker efficiency (Watts loss at I
Ambient operating temperature (ºC) -25 to 40 -25 to 40 -25 to 40 -25 to 40
Weights (Fixed Breaker/DO Breaker/Cradle) lbs. 86/137/108 86/137/108 86/137/108 86/137/108
WL frame ratings – frame size 2 800A 1200A 1600A 2000A 2500A 3000A
Rating Class S L C S L C S L C S L C L C L C
Interrupting current frame Ics 240VAC 65 100 150 65 100 150 65 100 150 65 100 150 100 150 100 150
(kAIR RMS) 50/60 Hz 480VAC 65 100 150 65 100 150 65 100 150 65 100 150 100 150 100 150
600VAC 65 85 100 65 85 100 65 85 100 65 85 100 85 100 85 100
Short-time current Icw (kA RMS) 0.4 sec. 65 85 100 65 85 100 65 85 100 65 85 100 85 100 85 100
Extended instantaneous protection 480VAC 65 100 150 65 100 150 65 100 150 65 100 150 100 150 100 150
rating (kA RMS) 600VAC 65 85 100 65 85 100 65 85 100 65 85 100 85 100 85 100
Close and latch rating (kA RMS) 65 85 100 65 85 100 65 85 100 65 85 100 85 100 85 100
Applicable rating plug range 200 - 800A 200 - 1200A 200 - 1600A 200 - 2000A 200 - 2500A 200 - 3000A
Minimum enclosure dimension (in.)
Mechanical make-time (ms) 35 35 35 35 35 35
Mechanical break-time (ms) 34 34 34 34 34 34
Electric close make-time (ms) 50 50 50 50 50 50
Electric trip/ UV break-time (ms) 40/73 40/73 40/73 40/73 40/73 40/73
Electric trip and reclose interval (ms) 80 80 80 80 80 80 80
Mec
hanical duty cycles (no maint.)
Electrical duty cycles (no maint) 7500 (5000 7500 (5000 7500 (5000 4000 4000 4000
Draw-out breaker efficiency (Watts loss at I
Fixed-mount breaker efficiency
(Watts loss at I
Ambient operating temperature (ºC) -25 to 40 -25 to 40 -25 to 40 -25 to 40 -25 to 40 -25 to 40
Weights (Fixed Breaker/DO Breaker/Cradle) 124/159/112 124/159/112 124/159/112 130/177/128 130/177/128 130/177/128
lbs. 148/220/163 148/220/163 148/220/163 148/220/163 148/220/163 148/220/163
n) 40 80 120 230 320 480
n) 80 180 350 530
n) 60 120 160 270
22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx22.5Hx19.5D 22Wx15Hx19.5D
10,000 (5000
for Class C) for Class C) for Class C) for Class C) for Class C) for Class C)
for Class C) for Class C) for Class C)
n) 85 150 320 500 680 1000
(Class C) (Class C) (Class C) (Class C) (Class C) (Class C)
10,000 (5000
10,000 (5000
10,000 (5000
10,000 (5000 10,000 (5000
27WL Circuit Breaker Selection and Application Guide
Page 30
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
Ratings for UL489 Listed Breakers
WL frame ratings – Frame size 3 4000A 5000A
Rating Class L C L C
Interrupting current frame Ics (kAIR RMS) 50/60 Hz 240VAC 100 150 100 150
480VAC 100 150 100 150
600VAC 85 100 85 100
Short-time current Icw (kA RMS) 0.4 sec. 85 100 85 100
Extended instantaneous protection rating 480VAC 100 150 100 150
(kA RMS) 600VAC 85 100 85 100
Close and latch rating (kA RMS) 85 100 85 100
Applicable rating plug range 800 - 4000A 800 - 5000A
Minimum enclosure dimension (in.) 32Wx22.5Hx19.5D 32Wx22.5Hx19.5D
Mechanical make-time (ms) 35 35
Mechanical break-time (ms) 34 34
Electric close make-time (ms) 50 50
Electric trip/ UV break-time (ms) 40/73 40/73
Electric trip and reclose interval (ms) 80 80
Mechanical duty cycles (no maint.) 5000 5000
Electrical duty cycles (no maint) 2000 2000
Draw-out breaker efficiency (Watts loss at I
Fixed-mount breaker efficiency (Watts loss at I
Ambient operating temperature (ºC) -25 to 40 -25 to 40
Weights (Fixed Breaker/DO Breaker/Cradle) lbs. 181/278/306 181/278/306
200/278/306 200/278/306
(Class C) (Class C)
n) 1100 1100
n) 580 580
Ratings for UL489 Listed non-automatic switches
WL frame ratings Frame size 1 Frame size 2 Frame size 3
800-1200 A 800 - 3000A 4000/5000A
Rating Class H L L
Breaking capacity with external relay (kA RMS) 240VAC 85 100 100
50/60 Hz, instantaneous trip 480VAC 85 100 100
600VAC 65 85 85
t-time current Icw (kA RMS)
Shor
0.4 sec. 65
85
85
28 WL Circuit Breaker Selection and Application Guide
Page 31
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 489 Listed Catalog Number
Interrupting rating, frame size, breaker type and frame rating
Breaker catalog number
Note: Cradle must be ordered separately for drawout breaker types (see page 36)
Class Interrupt rating (kA) Frame Frame size Breaker type
240VAC Max ampere Fixed Fixed
480VAC 600VAC rating (A) 1 2 3 mount Drawout
S 65 65 800 X X S 1 F 3 0 8
S 65 65 800 X X S 2 F 3 0 8
S 65 65 800 X X S 1 D 3 0 8
S 65 65 800 X X S 2 D 3 0 8
S 65 65 1200 X X S 1 F 3 1 2
S 65 65 1200 X X S 2 F 3 1 2
S 65 65 1200 X X S 1 D 3 1 2
S 65 65 1200 X X S 2 D 3 1 2
S 65 65 1600 X X S 1 F 3 1 6
S 65 65 1600 X X S 2 F 3 1 6
S 65 65 1600 X X S 1 D 3 1 6
S
S 65 65 2000 X X S 1 F 3 2 0
S 65 65 2000 X X S 2 F 3 2 0
S 65 65 2000 X X S 1 D 3 2 0
S 65 65 2000 X X S 2 D 3 2 0
L 100 65 800 X X L 1 F 3 0 8
L 100 85 800 X X L 2 F 3 0 8
L 100 65 800 X X L 1 D 3 0 8
L 100 85 800 X X L 2 D 3 0 8
L 100 65 1200 X X L 1 F 3 1 2
L 100 85 1200 X X L 2 F 3 1 2
L 100 65 1200 X X L 1 D 3 1 2
L 100 85 1200 X X L 2 D 3 1 2
L 100 65 1600 X X L 1 F 3 1 6
L 100 85 1600 X X L 2 F 3 1 6
L 100 65 1600 X X L 1 D 3 1 6
L 100 85 1600 X X L 2 D 3 1 6
L 100 65 2000 X X L 1 F 3 2 0
L 100 85 2000 X X L 2 F 3 2 0
L 100 65 2000 X X L 1 D 3 2 0
L 100 85 2000 X X L 2 D 3 2 0
L 100 85 2500 X X L 2 F 3 2 5
L 100 85 2500 X X L 2 D 3 2 5
L 100 85 3000 X X L 2 F 3 3 0
L 100 85 3000 X X L 2 D 3 3 0
L 100 85 4000 X X L 3 F 3 4 0
L 100 85 4000 X X L 3 D 3 4 0
L 100 85 5000 X X L 3 F 3 5 0
L 100 85 5000 X X L 3 D 3 5 0
C 150 100 800 X X C 2 F 3 0 8
C 150 100 800 X X C 2 D 3 0 8
C 150 100 1200 X X C 2 F 3 1 2
C 150 100 1200 X X C 2 D 3 1 2
C 150 100 1600 X X C 2 F 3 1 6
C 150 100 1600 X X C 2 D 3 1 6
C 150 100 2000 X X C 2 F 3 2 0
C 150 100 2000 X X C 2 D 3 2 0
C 150 100 2500 X X C 2 F 3 2 5
C 150 100 2500 X X C 2 D 3 2 5
C 150 100 3000 X X C 2 F 3 3 0
C 150 100 3000 X X C 2 D 3 3 0
C 150 100 4 000 X X C 3 F 3 4 0
C 150 100 4000 X X C 3 D 3 4 0
C 150 100 5000 X X C 3 F 3 5 0
C 150 100 5000 X X C 3 D 3 5 0
65
65
1600
X
1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
X
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
S 2 D 3 1 6
29WL Circuit Breaker Selection and Application Guide
Page 32
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 489 Listed Catalog Number
Rating Plug
1
Maximum
continuous
current rating 1 2 3
200 X X
225 X X
250 X X
300 X X
315 X X
350 X X
400 X X
450 X X
500 X X
600 X X
630 X X
700 X X
800 X X X
1000 X X X
1200 X X X
1250 X X X
1600 X X X
2000 X X X
2500 X X
3000 X X
4000 X
5000 X
For use with
frame size
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
A
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
T
U
V
W
Z
1
Electronic trip unit (ETU)
Protective
Trip unit function LCD display Ground fault
models L S I Alpha num. Alarm Trip
ETU745 X (X) (X) C
ETU745 X (X) (X) X D
ETU745 X (X) (X) X E
ETU745 X (X) (X) X X F
ETU745 X (X) (X) X X G
ETU745 X (X) (X) X X X H
ETU748 X X J
ETU748 X X X K
ETU748 X X X L
ETU748 X X X X N
ETU748 X X X X P
ETU748 X X X X X Q
ETU776 X (X) (X) V
ETU776 X (X) (X) X W
ETU776 X (X) (X) X X Y
(X) Indicates function can be disabled by user
1 Neutral protection “N” is available as standard.
1)
30 WL Circuit Breaker Selection and Application Guide
Page 33
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 489 Listed Catalog Number
Bell alarm, breaker ready-to-close, auxiliary contacts
Bell alarm
Remote reset Breaker Breaker open/close
coil voltage Form C ready-to-close auxiliary switches
AC DC contacts 1
X A
X B
X C
X D
X X E
X X F
X X G
X X H
X X I
X X X J
X X X K
24 X L
48 X M
120 125 X N
240 250 X O
24 X X P
48 X X Q
120 125 X X R
240 250 X X S
24 X X T
48 X X U
120 125 X X V
240 250 X X W
24 X X Y
48 X X Z
120 125 X X 1
240 250 X X 2
24 X X X 3
48 X X X 4
120 125 X X X 5
240 250 X X X 6
24 X X X 7
48 X X X 8
120 125 X X X 9
240 250 X X X 0
None X
b
contact 2a + 2b 4a + 4b
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Shunt trip
Operation voltage
AC DC contact (electrical interlock)
24 A
48 B
120 125 C
240 250 D
24 X E
48 X F
120 125 X G
240 250 X H
24 X J
48 X K
120 125 X L
240 250 X M
24 X X N
48 X X P
120 125 X X R
240 250 X X S
Status Continuous duty coil
None X
31WL Circuit Breaker Selection and Application Guide
Page 34
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 489 Listed Catalog Number
Undervoltage Release (with or without time delay) or 2nd Shunt Trip
Operation
voltage UVR UVR UVR status
AC DC without delay with delay contact (1NO) shunt trip
None X
24 X A
48 X B
120 125 X C
240 250 X D
48 X E
120 125 X F
240 250 X G
24 X H
48 X J
120 125 X K
240 250 X L
24 X X M
48 X X N
120 125 X X P
240 250 X X Q
48 X X R
120 250 X X S
240 250 X X T
1
2nd
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Charging motor, motor switch, operations counter
Charging motor
operation voltage Motor cut-off Operations
AC DC
24 A
48 B
120 125 C
240 250 D
24 X E
48 X F
120 125 X G
240 250 X H
24 X J
48 X K
120 125 X L
240 250 X M
24 X X N
48 X X P
120 125 X X Q
240 250 X X R
switch counter
None X
1
Status contact is only available when Communications is not installed on breaker. Signal is sent via
communications in lieu of status contact.
32 WL Circuit Breaker Selection and Application Guide
Page 35
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 489 Listed Catalog Number
Breaker catalog number
Close coil, power metering and communications
Close coil Power metering
operation voltage capable
AC DC
24 A
120 125 C
240 250 D
X G
24 X N
24 X P
48 X S
120 125 X W
120 125 X Y
240 250 X 2
240 250 X 3
24 X X Q
48 X X U
120 125 X X Z
240 250 X X 4
24 X X R
48 X X V
120 125 X X 1
240 250 X X 5
X X L
X X M
X F
B
48
48
MODBUS
2
1 1
PROFIBUS
X
T
X
2
H
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
None
X
Breaker locks
Key lock breaker Key lock breaker Padlock provisions for Padlock provisions
OPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
X A
X C
X E
X F
X X G
X X J
X X S
X X U
X X V
X X X W
X X X Z
1
type – SUPERIOR)1 push buttons
2
handle2
None X
Miscellaneous options
Key lock breaker Manual trip reset ETU
OPEN position (provision only)
X B
X C
X X D
2
(Automatic trip reset is standard)
None N
1
Custom key locks are not available and must be supplied by others. Order key lock provision if custom if keyed alike locks are required.
2
Locks provided by others.
33WL Circuit Breaker Selection and Application Guide
Page 36
WL Insulated Case Switch
Courtesy of NationalSwitchgear.com
UL 489 Listed Non-automatic Catalog Number
Switch catalog number
Breaking capacity, frame size, switch type and frame rating
s
Clas
240VAC Max ampere Fixed
480VAC 600VAC rating (A) 2 3 mounted drawout
L 100 85 1600 X X L 2 Y 3 1 6 S S
L
L 100 85 2000 X X L 2 Y 3 2 0 S S
L 100 85 2000 X X L 2 Z 3 2 0 S S
L 100 85 2500 X X L 2 Y 3 2 5 S S
L
L 100 85 3000 X X L 2 Y 3 3 0 S S
L 100 85 3000 X X L 2 Z 3 3 0 S S
L 100 85 4000 X X L 3 Y 3 4 0 S S
L
L 100 85 5000 X X L 3 Y 3 5 0 S S
L 100 85 5000 X X L 3 Z 3 5 0 S S
Ready-to-close and auxiliary contacts
Ready-to-close Breaker open/close auxiliary switches
b
contact 2
1
X B
X C
X D
X X H
X X I
eaking capacity (kA)
Br
100
100
100
85
85
85
None X
a + 2b
rame
F
1600
2500
4000
4
rame size
F
X
X
X
a + 4b
Switc
X
h type
1
X
X
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
L 2 Z 3 1 6 S S
L 2 Z 3 2 5 S S
L 3 Z 3 4 0 S S
34 WL Circuit Breaker Selection and Application Guide
Page 37
WL Insulated Case Switch
Courtesy of NationalSwitchgear.com
UL 489 Listed Non-automatic Catalog Number
Shunt trip
Operation voltage
AC DC contact
24 X A
48 X B
120 125 X C
240 250 X D
24 X X E
48 X X F
120 125 X X G
240 250 X X H
24 X J
48 X K
120 125 X L
240 250 X M
24 X X N
48 X X P
120 125 X X R
240 250 X X S
Status Shunt Continuous duty rated
1
trip (electrical interlock)
None X
Switch catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Undervoltage release (with or without time delay) or 2nd shunt trip
Operation
voltage UVR UVR UVR status
AC DC without delay with delay contact (1NO) trip
None X
24 X A
48 X B
120 125 X C
240 250 X D
48 X E
120 125 X F
240 250 X G
24 X H
48 X J
120 125 X K
240 250 X L
24 X X M
48 X X N
120 125 X X P
240 250 X X Q
48 X X R
120 250 X X S
240 250 X X T
1
2nd shunt
1
Status contact is only available when communication is not installed. Signal is sent via communications in lieu of status contact.
35WL Circuit Breaker Selection and Application Guide
Page 38
WL Insulated Case Switch
Courtesy of NationalSwitchgear.com
UL 489 Listed Non-automatic Catalog Number
Charging motor, motor switch and operation counter
Charging motor
operation voltage Motor cut-off Operations
AC DC
24 A
48 B
120 125 C
240 250 D
24 X E
48 X F
120 125 X G
240 250 X H
24 X J
48 X K
120 125 X L
240 250 X M
24 X X N
48 X X P
120 125 X X Q
240 250 X X R
Close coil, communications
Close coil
operation voltage
AC DC
None X
X G
24 A
24 X N
48 B
48 X S
120 125 C
120 125 X W
240 250 D
240 250 X 2
X H
24 X P
48 X T
120
240 250 X 3
125
switch counter
None X
1
Modbus
PROFIBUS
X
1
Switch catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Y
1
Requires 24VDC power supply. Power metering not available on non-automatic switches and BSS is included.
36 WL Circuit Breaker Selection and Application Guide
Page 39
WL Insulated Case Circuit Switch
Courtesy of NationalSwitchgear.com
UL 489 Listed Non-automatic Catalog Number
Switch locks
Key lock breaker Key lock breaker Padlock provisions for Padlock provisions
OPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
None X
X A
X C
X E
X F
X X G
X X J
X X S
X X U
X X V
X X X W
X X X Z
1
type – SUPERIOR)1 push buttons2 handle
Switch catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Miscellaneous options
Key lock breaker
OPEN position (provision only)
None N
X B
2
1
Custom key locks are not available and must be supplied by others. Order Key Lock Provisions if custom keys or keyed alike locks are required.
2
Padlock provided by others.
37WL Circuit Breaker Selection and Application Guide
Page 40
WL Insulated Case Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 489 Listed Accessories
External breaker accessories
Description Catalog number
Front mount connectors for fixed breakers
FS1, 85kAIC at 480V max. 800A, 1200A WLHF12CONUL
FS2, 100kAIC at 480V max. 1600A WLL2F16CONUL
FS2, 100kAIC at 480V max. 2000A WLL2F20CONUL
FS2, 100kAIC at 480V max. 3000A WLL2F30CONUL
FS3, 100kAIC at 480V max. 4000A, 5000A WLL3F50CONUL
Mechanical lug
FS1, FS2, 65kAIC at 480V max 800A, 1200A WLS2P12CONUL
FS2, 65kAIC at 480V max 1600A, 2000A WLS2P20CONUL
Rear vertical connectors
FS1, 85kAIC at 480V max 800A, 1200A WLH1R12CONUL
FS2, 100kAIC at 480V max 1600A WLL2R16CONUL
FS2, 100kAIC at 480V max 2000A WLL2R20CONUL
FS2, 1100kAIC at 480V max 2500A, 3000A WLL2R30CONUL
FS2, 150kAIC at 480V max 1600A, 2000A, 2500A, 3000A WLC2R30CONUL
FS3, 150kAIC at 480V max 4000A, 5000A WLC3R50CONUL
Single phase CTs for metering, 5A secondary
Rating: 800:5 WLG800NMCT23
Rating: 1200:5 WLG1200NMCT23
Rating: 1600:5 WLG1600NMCT23
Rating: 2000:5 WLG2000NMCT23
Rating: 2500:5 WLG2500NMCT23
Rating: 3000:5 WLG3000NMCT23
Rating: 4000:5 WLG4000NMCT23
Rating: 5000:5 WLG5000NMCT23
Modified differential ground fault (MDGF) CTs
Modified differential GF (FS2 1200:1) Phase CT WLGMDGFCT2
Modified differential GF (FS3 1200:1) Phase CT WLGMDGFCT3
Modified differential GF (FS2 and FS3 1200:1) Neutral CT WLGNMDGFCT23
4-wire residual ground fault sensor
Without copper bus adapters (pass-thru mount) - for 3” max bus bar WLNCT2
Without copper bus adapters (pass-thru mount) - for 3 - 5” max bus bar WLNCT3
With copper bus adapters for bus bar connection - for 3” max bus bar WLNCT2CB
With copper bus adapters for bus bar connection - for 3 - 5” max bus bar WLCNMDGCT23
Mechanical interlocks
Fixed mounted breaker (FS1) WLNTLKF1
Fixed mounted breaker (FS2 and FS3) WLNTLKF23
Miscellaneous external accessories
Crimp lugs for 10# AWG secondary wiring (package of 70) WL10RL
Auxiliary contact on drawout breaker (knife block) WLCNMD
24V DC trip unit and communications power supply, 2.5A SITOP power, Class 2 WLSITOP25
24V DC trip unit and communications power supply 3.8A SITOP power, Class 2 WLSITOP1
Optional metric inserts and bolts for breaker mains (4 each) M8x25 for FS1 and FS2 WLMETRC
Optional metric inserts and bolts for breaker mains (4 each) M10x25 for FS2 and FS3 WLMETRC3
Secondary disconnect coding kit for UL 489 fixed mounted breaker WLCODEKITUL
Pull apart terminal block with 1 meter leads for UL 489 fix mounted breakers WLTERMBLKUL
38 WL Circuit Breaker Selection and Application Guide
Page 41
WL Insulated Case Breaker Cradles
Courtesy of NationalSwitchgear.com
UL 489 Listed Catalog Number
Cradle catalog number
Interrupting rating, frame size, and frame rating
s
Clas
240VAC Max ampere
480VAC 600VAC rating (A) 1 2 3
S 65 65 800 X S 1 3 0 8
S
S 65 65 1200 X S 1 3 1 2
S 65 65 1200 X S 2 3 1 2
S 65 65 1600 X S 1 3 1 6
S
S 65 65 2000 X S 1 3 2 0
S 65 65 2000 X S 2 3 2 0
L 100 65 800 X L 1 3 0 8
L
L 100 65 1200 X L 1 3 1 2
L 100 85 1200 X L 2 3 1 2
L 100 65 1600 X L 1 3 1 6
L
L 100 65 2000 X L 1 3 2 0
L
L 100 85 2500 X L 2 3 2 5
L
L 100 85 4000 X L 3 3 4 0
L
C 150 100 800 X C 2 3 0 8
C
C 150 100 1600 X C 2 3 1 6
C
C 150 100 2500 X C 2 3 2 5
C
C 150 100 4000 X C 3 3 4 0
C
Type of secondary terminal connection
For breakers:
Screw clamp terminals A
Spring clamp terminals B
Ring terminals C
Screw clamp terminals (low profile, non-partable design) L
For switches (non-automatic):
Screw clamp terminals G
Spring clamp terminals H
Ring terminals J
Screw clamp terminals (low profile non-partable design) N
Truck Operated Contacts (TOC)
Breaker position switches in the following configurations:
None X
(1) Connected, (1) Test, (1) Disconnected - all Form C 1
(3) Connected, (2) Test, (1) Disconnected - all Form C 3
(6) Connected - all Form C 6
Cradle mounted key locks
None X
Lock breaker in OPEN position (Kirk lock) A
Lock breaker in OPEN position (Superior lock) B
Double-key lock breaker in OPEN position (Kirk lock) C
Double-key lock breaker in OPEN position (Superior lock) D
Provision only - Lock breaker in OPEN position E
Provision only - Double-key lock breaker in OPEN position F
Primary conductor isolation shutter
None X
Isolation Shutter F
errupt rating (kA)
Int
65
65
100
100
100
100
100
150
150
150
150
65
65
85
85
85
85
85
100
100
100
100
rame
F
X
800
1600
X
800
1600
2000
3000
5000
X
1200
X
2000
X
3000
X
5000
1
1 G G 2 3 4 5 6 7 8 9 10 11 12 13 14 15
rame size
F
X
X
X
X
X
S 2 3 0 8
S 2 3 1 6
L 2 3 0 8
L 2 3 1 6
L 2 3 2 0
L 2 3 3 0
L 3 3 5 0
C 2 3 1 2
C 2 3 2 0
C 2 3 3 0
C 3 3 5 0
1
Terminal blocks (X5, X6, X8, X9) are installed as standard.
39WL Circuit Breaker Selection and Application Guide
Page 42
WL Insulated Case Breaker Cradle
Courtesy of NationalSwitchgear.com
UL 489 Listed Catalog Number
Cradle catalog number
Arc chute covers
None X
Arc chute cover s (FS1 only) C
Arc chute covers (FS2 only) D
Ar
c chute covers
Door locks and mechanical interlocks
1. Mechanical interlock with 2.0 meter Bowden cable
2. Loc
ks cubicle door, when breaker is in connect position
3. Locks cubicle door, when breaker is in connect position (FS1 only)
4. Locks against racking breaker if the cubicle door is open (FS2 and FS3)
1 2 3 4
None X
X M
X A
X B
X X D
X X
X X F
X
X X H
Mec
hanism Operated Contacts (MOC)
Breaker open/close auxiliary switches (4
None X
Test and Connect position (FS1 and FS2 only) M
Connect position (FS1 and FS2 only) N
Test and Connect position (FS3 only) P
Connect position (FS3 only) Q
Connector and heater options
Standard rear connectors X
Standard rear connectors and a cradle heater (FS2 and FS3) H
Rotatable rear connector (FSI and FS2 2000A and below, S Class) J
Rotatable rear connectors and a cradle heater (FS2 2000A and below, S Class) K
Future use
Placeholder (required) N
X
X
X
a
& 4b) in the following positions:
(FS3 onl
(FS2 and FS3)
G 2 3 4 5 6 7 8 9 10 11 12 13 14 15
y – except Class C)
B
C
E
G
40 WL Circuit Breaker Selection and Application Guide
Page 43
WL Insulated Case Breaker Cradles
Courtesy of NationalSwitchgear.com
UL 489 Listed Accessories
Cradle accessories Catalog number
3-phase metering CTs, cradle mounted (3 windows per CT)
FS1 and FS2 Rating – 800:5 WLG8005MCT2
Rating – 1200:5 WLG12005MCT2
Rating – 1600:5 WLG16005MCT2
FS2 Rating – 2500:5 WLG25005MCT2
Rating – 3000:5 WLG30005MCT2
FS3 Rating – 4000:5 WLG40005MCT3
Rating – 5000:5 WLG50005MCT3
41WL Circuit Breaker Selection and Application Guide
Page 44
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
Ratings for UL 1066 Listed (ANSI C37) Breakers
WL frame ratings – Frame size 2 800A 1600A
Rating Class N S H L F N S H L F
Interrupting current frame Ics (kAIR RMS) 50/60 Hz 254VAC 50 65 85 100 200 50 65 85 100 200
508VAC 50 65 85 100 200 50 65 85 100 200
600VAC — — — — 200 — — — — 200
635VAC 50 65 65 85 — 50 65 65 85 —
Short-time current Icw (kA RMS) 1 sec. 50 65 65 85 — 50 65 65 85 —
Close and latch rating (kA RMS) 50 65 65 85 —
Applicable rating plug range 200 - 800A 200 - 1600A
Mechanical make-time (ms) 35 35
Mechanical break-time (ms) 34 34
Electric close make-time (ms) 50 50
Electric trip/ UV break-time (ms) 40/73 40/73
Electric trip and reclose interval (ms) 80 80
Mechanical duty cycles (no maint.) 15,000 15,000
Electrical duty cycles (no maint) 15,000 15,000
Draw-out breaker efficiency (Watts loss at rated I
Draw-out fused breaker efficiency (Watts loss at rated I
Ambient operating temperature (ºC) -25 to 40 -25 to 40
Weights (Fused Breaker/Breaker/Cradle) lbs. 227/159/112 227/159/112
WL frame ratings – Frame size 2 2000A 3200A
Rating Class S H L F S H L
Interrupting current frame Ics 254VAC 65 85 100 200 65 85 100
(kAIR RMS) 50/60 Hz 508VAC 65 85 100 200 65 85 100
635VAC 65 65 85 — 65 65 85
Shor
t-time current Icw (kA RMS)
Close and latch rating (kA RMS) 65 65 85 — 65 65 85
Applicable rating plug range 200 - 2000A 200 - 3200A
Mechanical make-time (ms) 35 35
Mechanical break-time (ms) 34 34
Electric close make-time (ms) 50 50
Electric trip/ UV break-time (ms) 40/73 40/73
Electric trip and reclose interval (ms) 80 80
Mechanical duty cycles (no maint.) 15,000 15,000
Electrical duty cycles (no maint) 15,000 15,000
Draw-out breaker efficiency (Watts loss at rated I
Draw-out fused breaker efficiency (Watts loss at rated I
Ambient operating temperature (ºC) -25 to 40 -25 to 40
Weights (Fused Breaker/Breaker/Cradle) lbs. 227/209/152 227/209/152
n) 85 320
n) Consult factory Consult factory
600V
AC —
1 sec.
n) 700 1650
n) Consult factory Consult factory
65
—
65
—
85
50 65 65 85 —
200
—
—
65
—
65
—
85
42 WL Circuit Breaker Selection and Application Guide
Page 45
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
Ratings for UL 1066 Listed (ANSI C37) Breakers
WL frame ratings – Frame size 3 3200A 4000A 5000A
Rating Class M F H L M F H L M F
Interrupting current frame Ics 254VAC 150 200 85 100 150 200 85 100 150 200
(kAIR RMS) 50/60 Hz 508VAC 150 200 85 100 150 200 85 100 150 200
600VAC — 200 — — — 200 — — — 200
635VAC 85 — 85 85 85 — 85 85 85 —
Short-time current Icw (kA RMS) 1 sec. 100 — 85 100 100 — 85 100 100 —
Close and latch rating (kA RMS) 100 — 85 100 100 — 85 100 100 —
1
1
1
1
1
1
1
1
1
1
1
Applicable rating plug range 800 - 3200A 800 - 4000A 800 - 5000 A
Mechanical make-time (ms) 35 35 35
Mechanical break-time (ms) 34 34 24
Electric close make-time (ms) 50 50 50
Electric trip/ UV break-time (ms) 40/73 40/73 40/73
Electric trip and reclose interval (ms) 80 80 80
Mechanical duty cycles (no maint.) 10,000 10,000 10,000
Electrical duty cycles (no maint) 10,000 10,000 10,000
Draw-out breaker efficiency (Watts loss at rated I
Draw-out fused breaker efficiency (Watts loss at rated I
n) 700 1100 1650
n) Consult factory Consult factory Consult Factory
Ambient operating temperature (ºC) -25 to 40 -25 to 40 -25 to 40
Weights (Fused Carriage/Breaker/Cradle) lbs. 225/260/306 225/260/306 225/260/306
Ratings for UL 1066 Listed Non-automatic Switches
WL frame ratings Frame size 2 Frame size 3
800 - 2000A 3200 - 5000A
Rating Class F L F L
Breaking capacity with external relay (kA RMS) 254VAC 20 100 40 100
50/60 Hz, instantaneous trip 508VAC 20 100 40 100
635VAC 20 85 40 85
Short-time current Icw (kA RMS) 1 sec. 20 65 40 100
22
1
1
Do not apply switch or breaker rated at 635VAC to a system with fault current > 85kA RMS.
2
Interrupt rating is 200kA based on fuse rating.
43WL Circuit Breaker Selection and Application Guide
Page 46
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Listed Catalog Number
Interrupting rating, frame size, breaker type and frame rating
Breaker catalog number
Note: Cradle must be ordered separately (see page 49)
Class Interrupt rating (kA) Frame Frame size Fuse (A)
254VAC Max ampere
508VAC 635VAC rating (A) 2 3
N 50 50 800 X N 2 A 3 0 8
N 50 50 1600 X N 2 A 3 1 6
S 65 65 800 X S 2 A 3 0 8
S 65 65 1600 X S 2 A 3 1 6
S 65 65 2000 X S 2 A 3 2 0
S 65 65 3200 X S 2 A 3 3 2
H 85 65 800 X H 2 A 3 0 8
H 85 65 1600 X H 2 A 3 1 6
H 85 65 2000 X H 2 A 3 2 0
H 85 65 3200 X H 2 A 3 3 2
H 85 85 4000 X H 3 A 3 4 0
H 85 85 5000 X H 3 A 3 5 0
L 100 85 800 X L 2 A 3 0 8
L 100 85 1600 X L 2 A 3 1 6
L 100 85 2000 X L 2 A 3 2 0
L 100 85 3200 X L 2 A 3 3 2
L 100 85 4000 X L 3 A 3 4 0
L 100 85 5000 X L 3 A 3 5 0
M 150 85 3200 X M 3 A 3 3 2
M 150 85 4000 X M 3 A 3 4 0
M 150 85 5000 X M 3 A 3 5 0
F 200 200 800 X 400 F 2 A 3 0 A
F 200 200 800 X 600 F 2 A 3 0 B
F 200 200 800 X 800 F 2 A 3 0 C
F 200 200 800 X 900 F 2 A 3 0 D
F 200 200 800 X 1000 F 2 A 3 0 E
F 200 200 800 X 1200 F 2 A 3 0 F
F 200 200 800 X 1600 F 2 A 3 0 G
F 200 200 800 X 2000 F 2 A 3 0 H
F 200 200 800 X 2500 F 2 A 3 0 J
F 200 200 800 X 3000 F 2 A 3 0 K
F 200 200 1600 X 400 F 2 A 3 1 A
F 200 200 1600 X 600 F 2 A 3 1 B
F 200 200 1600 X 800 F 2 A 3 1 C
F 200 200 1600 X 900 F 2 A 3 1 D
F 200 200 1600 X 1000 F 2 A 3 1 E
F 200 200 1600 X 1200 F 2 A 3 1 F
F 200 200 1600 X 1600 F 2 A 3 1 G
F 200 200 1600 X 2000 F 2 A 3 1 H
F 200 200 1600 X 2500 F 2 A 3 1 J
F 200 200 1600 X 3000 F 2 A 3 1 K
F 200 200 2000 X 400 F 2 A 3 2 A
F 200 200 2000 X 600 F 2 A 3 2 B
F 200 200 2000 X 800 F 2 A 3 2 C
F 200 200 2000 X 900 F 2 A 3 2 D
F 200 200 2000 X 1000 F 2 A 3 2 E
F 200 200 2000 X 1200 F 2 A 3 2 F
F 200 200 2000 X 1600 F 2 A 3 2 G
F 200 200 2000 X 2000 F 2 A 3 2 H
F 200 200 2000 X 2500 F 2 A 3 2 J
F 200 200 2000 X 3000 F 2 A 3 2 K
F 200 200 3200 X 6000 F 3 A 3 3 2
F 200 200 4000 X 6000 F 3 A 3 4 0
F 200 200 5000 X 6000 F 3 A 3 5 0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
44 WL Circuit Breaker Selection and Application Guide
Page 47
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Listed Catalog Number
Rating plug
Maximum continuous Frame size Frame size
current rating (A) 2 3
200 X A
225 X B
250 X C
300 X D
315 X E
350 X F
400 X G
450 X H
500 X J
600 X K
630 X L
700 X M
800 X X N
1000 X X P
1200 X X Q
1250 X X R
1600 X X T
2000 X X U
2500 X X V
3000 X X W
3200 X X Y
4000 X Z
5000 X 1
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Electronic trip units (ETU)
Trip unit Protective function LCD display Ground fault module
type L S I alpha num. Alarm Trip
ETU745 X (X) (X) C
ETU745 X (X) (X) X D
ETU745 X (X) (X) X E
ETU745 X (X) (X) X X F
ETU745 X (X) (X) X X G
ETU745 X (X) (X) X X X H
ETU748 X X J
ETU748 X
ETU748 X X X L
ETU748 X
ETU748 X X X X P
ETU748 X X X X X Q
ETU776 X (X) (X) V
ETU776 X (X) (X) X W
ETU776 X (X) (X) X X Y
( ) Function can be disabled by user.
X
X
X
X
X
K
N
45WL Circuit Breaker Selection and Application Guide
Page 48
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Listed Catalog Number
Bell alarm, breaker ready-to-close, auxiliary contacts
Bell alarm
Remote reset Breaker Breaker open/close
coil voltage Form C ready-to-close auxiliary switches
AC DC contacts 1
X A
X B
X C
X D
X X E
X X F
X X G
X X H
X X I
X X X J
X X X K
24 X L
48 X M
120 125 X N
240 250 X O
24 X X P
48 X X Q
120 125 X X R
240 250 X X S
24 X X T
48 X X U
120 125 X X V
240 250 X X W
24 X X Y
48 X X Z
120 125 X X 1
240 250 X X 2
24 X X X 3
48 X X X 4
120 125 X X X 5
240 250 X X X 6
24 X X X 7
48 X X X 8
120 125 X X X 9
240 250 X X X 0
None X
b
contact 2a + 2b 4a + 4b
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Shunt trip
Control voltage
AC DC contact
24 A
48 B
120 125 C
240 250 D
24 X E
48 X F
120 125 X G
240 250 X H
46 WL Circuit Breaker Selection and Application Guide
Status
None X
Page 49
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Listed Catalog Number
Undervoltage release (with or without time delay) or 2nd shunt trip
Control
voltage UVR UVR UVR 2nd shunt
AC DC without delay with delay status contact
24 X A
48 X B
120 125 X C
240 250 X D
48 X E
120 125 X F
240 250 X G
24 X H
48 X J
120 125 X K
240 250 X L
24 X X M
48 X X N
120 125 X X P
240 250 X X Q
48 X X R
125 X X S
120 250 X X T
Charging motor, motor switch, operations counter
Charging motor
operation voltage Motor cut-off Operations
AC DC
24 A
48 B
120 125 C
240 250 D
24 X E
48 X F
120 125 X G
240 250 X H
24 X J
48 X K
120 125 X L
240 250 X M
24 X X N
48 X X P
120 125 X X Q
240 250 X X R
switch counter
1
trip
None X
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
None X
1
Status contact is only available when communication is not installed on breaker. Signal is
sent via communication in lieu of status contact.
47WL Circuit Breaker Selection and Application Guide
Page 50
WL Power Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Listed Catalog Number
Close coil, power metering and communications
1
Close coil Power metering
operation voltage capable
AC DC
24 A
48 B
120 125 C
240 250 D
X G
X H
24 X N
24 X P
48 X S
48 X T
120 125 X W
120 125 X Y
240 250 X 2
240 250 X 3
24 X X Q
48 X X U
120 125 X X Z
240 250 X X 4
24 X X R
48 X X V
120 125 X X 1
240 250 X X 5
X X L
X X M
X F
1
Modbus 2
PROFIBUS
2
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
None X
Breaker locks
Key lock breaker Key lock breaker Padlock provisions for Padlock provisions
OPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
None X
X A
X C
X E
X F
X X G
X X J
X X S
X X U
X X V
X X X W
X X X Z
3
type – SUPERIOR)3 pushbuttons4 handle
4
Miscellaneous options
Key lock breaker Manual trip reset ETU
OPEN position (provision only)
None N
X B
X C
X X D
1
Requires External PTs for voltage input and 24VDC power supply.
2
Includes BSS device and requires 24VDC power supply.
3
Custom key locks are not available and must be supplied by others. Order key lock provision if custom if keyed
alike locks are required.
4
Locks provided by others.
48 WL Circuit Breaker Selection and Application Guide
4
(Automatic trip reset is standard)
Page 51
WL Power Circuit Switch
Courtesy of NationalSwitchgear.com
UL 1066 Listed Non-automatic Catalog Number
Switch catalog number
Breaking capacity, frame size, switch type and frame rating
s
Clas
240VAC Max ampere Fuse
480VAC 600VAC rating (A) 2 3 (A)
L 100 85 800 X L 2 S 3 0 8 S S
L 100 85 1600 X L 2 S 3 1 6 S S
L 100 85 2000 X L 2 S 3 2 0 S S
L 100 85 3200 X L 2 S 3 2 2 S S
L 100 85 4000 X L 3 S 3 4 0 S S
L 100 85 5000 X L 3 S 3 5 0 S S
F 200 200 800 X 1000 F 2 S 3 0 E S S
F
F 200 200 800 X 1600 F 2 S 3 0 G S S
F 200 200 800 X 2000 F 2 S 3 0 H S S
F 200 200 800 X 2500 F 2 S 3 0 J S S
F
F 200 200 1600 X 1000 F 2 S 3 1 E S S
F
F 200 200 1600 X 1600 F 2 S 3 1 G S S
F
F 200 200 1600 X 2500 F 2 S 3 1 J S S
F
F 200 200 2000 X 1000 F 2 S 3 2 E S S
F
F 200 200 2000 X 1600 F 2 S 3 2 G S S
F
F 200 200 2000 X 2500 F 2 S 3 2 J S S
F
F 200 200 3200 X 6000 F 3 S 3 3 2 S S
F 200 200 4000 X 6000 F 3 S 3 4 0 S S
F 200 200 5000 X 6000 F 3 S 3 5 0 S S
eaking capacity (kA) Frame
Br
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
800
800
1600
1600
1600
2000
2000
2000
rame size
F
X
X
X
X
X
X
X
X
1200
3000
1200
2000
3000
1200
2000
3000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
F 2 S 3 0 F S S
F 2 S 3 0 K S S
F 2 S 3 1 F S S
F 2 S 3 1 H S S
F 2 S 3 1 K S S
F 2 S 3 2 F S S
F 2 S 3 2 H S S
F 2 S 3 2 K S S
49WL Circuit Breaker Selection and Application Guide
Page 52
WL Power Circuit Switch
Courtesy of NationalSwitchgear.com
UL 1066 Listed Non-automatic Catalog Number
Breaker ready-to-close auxiliary contacts
Breaker ready-to-close Breaker open/close auxiliary switches
b
contact 2a + 2b 4
1
X B
X C
X D
X X H
X X I
None X
a
+ 4b 4NO+4NC
Switch catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Shunt trip
Operation voltage
AC DC contact
48 B
120 125 C
240 250 D
24 X E
48 X F
120 125 X G
240 250 X H
24
Status
None X
A
Undervoltage release (with or without time delay) or 2nd shunt trip
s
Operation
voltage UVR UVR UVR 2nd shunt
AC DC without delay with delay status contact
24 X A
48 X B
120 125 X C
240 250 X D
48 X E
120 125 X F
240 250 X G
24 X H
48 X J
120 125 X K
240 250 X L
24 X X M
48 X X N
120 125 X X P
240 250 X X Q
48 X X R
125 X X S
120 250 X X T
1
trip
None X
1
Status contact only available when communication is not installed. Signal is sent via communication in lieu of status contact.
50 WL Circuit Breaker Selection and Application Guide
Page 53
WL Power Circuit Switch
Courtesy of NationalSwitchgear.com
UL 1066 Listed Non-automatic Catalog Number
Charging motor, motor switch, operations counter
Charging motor
operation voltage Motor cut-off Operations
AC DC
24 A
48 B
120 125 C
240 250 D
24 X E
48 X F
120 125 X G
240 250 X H
24 X J
48 X K
120 125 X L
240 250 X M
24 X X N
48 X X P
120 125 X X Q
240 250 X X R
switch counter
None X
Switch catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Close coil, communications
Close coil
operation voltage
AC DC Modbus
None X
X G
24 A
24 X N
48 B
48 X S
120 125 C
120 125 X W
240 250 D
240 250 X 2
X H
24 X P
48 X T
120 125 X Y
240 250 X 3
1
PROFIBUS
1
1
Requires 24VDC power supply. BSS is included.
51WL Circuit Breaker Selection and Application Guide
Page 54
WL Power Circuit Switch
Courtesy of NationalSwitchgear.com
UL 1066 Listed Non-automatic Catalog Number
Switch locks
Key lock breaker Key lock breaker Padlock provisions for Padlock provisions
OPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
None X
X A
X C
X E
X F
X X G
X X J
X X S
X X U
X X V
X X X W
X X X Z
1
type – SUPERIOR)1 pushbuttons2 handle
Switch catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Miscellaneous options
Key lock breaker
OPEN position (provision only)
None N
X B
2
UL 1066 Listed Accessories
External accessories Catalog number
Single phase CTs for metering, 5A secondary
Ratings – 800:5 WLG800NMCT23
Ratings – 1600:5 WLG1600NMCT23
Ratings – 2000:5 WLG2000NMCT23
Ratings – 3200:5 WLG3200NMCT23
Ratings – 4000:5 WLG4000NMCT23
Ratings – 5000:5 WLG5000NMCT23
Modified differential ground fault
Modified differential GF (FS2 1200:1) Phase CT WLGMDGFCT2
Modified differential GF (FS3 1200:1) Phase CT WLGMDGFCT3
Modified differential GF (FS2, FS3 1200:1) Neutral CT WLNCT3CB
4-wire residual ground fault sensor
Without copper bus adapters (pass-thru mount) - for 3” max bus bar WLNCT2
Without copper bus adapters (pass-thru mount) - for 3 - 5” max bus bar WLNCT3
With copper bus adapters for bus bar connection - for 3” max bus bar WLNCT2CB
With copper bus adapters for bus bar connection - for 3 - 5” max bus bar WLNCT3CB
Internal replacement current sensor kit
Frame Size 2 Breaker WLCT2
Frame Size 3 Breaker WLCT3
Miscellaneous external accessories
Crimp lugs for 10#AWG secondary wiring (package of 70) WL10RL
Auxiliary contact on drawout breaker (knife block) WLCNMD
24V DC trip unit and communications power supply, 2.5A SITOP power, class 2 WLSITOP25
24V DC trip unit and communications power supply, 3.8A SITOP power, class 2 WLSITOP1
1
Custom key locks are not available and must be supplied by others. Order Key Lock Provisions if custom keys or keyed alike breakers are required.
2
Lock provided by others.
52 WL Circuit Breaker Selection and Application Guide
Page 55
WL Power Circuit Breaker Cradles
Courtesy of NationalSwitchgear.com
UL 1066 Listed Cradle Catalog Number
Cradle catalog number
Interrupting rating, frame size and frame rating
Class Interrupt rating (kA) Frame Frame size
240VAC Max ampere
480VAC 600VAC rating (A) 2 3
N 50 50 800 X N 2 3 0 8
N 50 50 1600 X N 2 3 1 6
S 65 65 800 X S 2 3 0 8
S 65 65 1600 X S 2 3 1 6
S 65 65 2000 X S 2 3 2 0
S 65 65 3200 X S 2 3 3 2
H 85 65 800 X H 2 3 0 8
H 85 65 1600 X H 2 3 1 6
H 85 65 2000 X H 2 3 2 0
H 85 65 3200 X H 2 3 3 2
H 85 85 4000 X H 3 3 4 0
H 85 85 5000 X H 3 3 5 0
L 100 85 800 X L 2 3 0 8
L 100 85 1600 X L 2 3 1 6
L 100 85 2000 X L 2 3 2 0
L 100 85 3200 X L 2 3 3 2
L 100 85 4000 X L 3 3 4 0
L 100 85 5000 X L 3 3 5 0
M 150 85 3200 X M 3 3 3 2
M 150 85 4000 X M 3 3 4 0
M 150 85 5000 X M 3 3 5 0
F 200 200 800 X F 2 3 0 8
F 200 200 1600 X F 2 3 1 6
F 200 200 2000 X F 2 3 2 0
F 200 200 3200 X F 2 3 3 2
F 200 200 4000 X F 3 3 4 0
F 200 200 5000 X F 3 3 5 0
G 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Type of secondary terminal connection 1
For Breakers:
Screw clamp terminals P
Spring clamp terminals T
Ring terminals R
Screw clamp terminals (low profile, non-partable design) K
For Switch (Non-automatic):
Screw clamp terminals D
Spring clamp terminals E
Ring terminals F
Screw clamp terminals, non-partable design) M
Truck Operated Contacts (TOC)
Breaker position switches in the following configurations:
None X
(1) Connected, (1) Test, (1) Disconnected - all Form C 1
(3) Connected, (2) Test, (1) Disconnected - all Form C 3
(6) Connected - all Form C 6
Cradle mounted key locks
None X
Lock breaker in OPEN position (Kirk key) A
Lock breaker in OPEN position (Superior key) B
Double lock breaker in OPEN position (Kirk key) C
Double lock breaker in OPEN position (Superior key) D
Provision only - Lock breaker in OPEN position E
Provision only - Double lock breaker in OPEN position F
Primary conductor isolation shutter
None X
Isolation Shutters F
1
Terminal blocks (X5, X6, X8, X9) are installed as standard.
2
Fused Frame Size 3 circuit breakers include a two cylinder provision as standard, with the second position pre-populated with a key-interlock to prevent racking
(in or out) of the separately-mounted fuse carriage while the associated fused circuit breaker is closed.
2
53WL Circuit Breaker Selection and Application Guide
Page 56
WL Power Circuit Breaker Cradles
Courtesy of NationalSwitchgear.com
UL 1066 Listed Cradle Catalog Number
Cradle catalog number
G 2 3 4 5 6 7 8 9 10 11 12 13 14 15 15
Arc chute covers
None X
Arc chute covers (FS2 only – Except Class F) A
Arc chute covers (FS3 only – Except Class F and M) B
Door locks and mechanical interlock
1. Mechanical interlock with 2.0 meter Bowden cable
2. Locks cubicle door, when breaker is in connect position (FS2 and FS3)
3. Locks against racking breaker if the cubicle door is open (FS2 and FS3)
1 2 3
None X
X M
X A
X C
X X D
X X X E
X X G
X X H
Mechanism Operated Contacts (MOC)
Breaker open/close auxiliary switches (4
None
Test and Connect position (FS2 only) M
Connect position
Test and Connect position (FS3 only) P
Connect position
Connector and heater options
Standard rear connectors
Standard rear connectors and a cradle heater H
Rotatable rear connectors
Rotatable rear connectors and a cradle heater (FS2, 2000A and below, N, S, & H Class) K
Future use
Placeholder (required) N
a
& 4b) in the following positions:
y)
(FS2 onl
y)
(FS3 onl
(FS2, 2000A and belo
w, N, S, & H Class) J
X
X
N
Q
UL 1066 Listed accessories
Cradle accessories Catalog Number
3-phase metering CTs, cradle mounted (3 windows per CT)
FS2 Ratings – 800:5 WLG8005MCT2
Ratings – 1600:5 WLG16005MCT2
Ratings – 2000:5 WLG20005MCT2
Ratings – 3200:5 WLG32005MCT2
FS3 Ratings – 3200:5 WLG32005MCT3
Ratings – 4000:5 WLG40005MCT3
Ratings – 5000:5 WLG50005MCT3
54 WL Circuit Breaker Selection and Application Guide
Page 57
WL Breaker
Courtesy of NationalSwitchgear.com
Application data
WL Secondary Terminal Assignments
55WL Circuit Breaker Selection and Application Guide
Page 58
WL Breaker
Courtesy of NationalSwitchgear.com
General Wiring Schematic
LINE
(TOP FED)
3P, 4W:
600V AC
- OR -
3P, 4W:
480V AC
BONDING MUST BE
UPSTREAM OF SENSOR
L1
L2
L3
N
WL CIRCUIT
BREAKER
NS
P1
P2
X8 9 -
X8 - 10
LOAD
(BOTTOM FED)
SEE DETAIL TO
THE RIGHT
X8-9
X8-10
TWISTED PAIR
3P, 4W: 480V OR 600V AC
N
P1
P2
NEUTRAL
SOURCE
TOP FED
SENSOR
SOURCE
BOTTOM FED
ETU745, ETU748,
ETU776
X8-10
S2+
TRIP UNIT
S1-
X8-9
WL
GF
INTERNAL WIRING
TWISTED PAIR
X8-8, N
X8-7, L3
X8-6, L2
X8-5, L1
A B C N
POTENTIAL TRANSFORMER INPUTS
METERING MODULE
WIRING IS CONTINUOUS IF NO
METERING MODULE IS INSTALLED
CubicleBus
X8-3
X8-1
X8-2
X8-4
24VDC
0VDC
CUB+
CUB-
CUB-
CUB+
24VDC
CubicleBus
0VDC
56 WL Circuit Breaker Selection and Application Guide
INTERNAL WIRING
WIRING IS CONTINUOUS IF NO
BSS MODULE IS INSTALLED
INTERNAL WIRING
INTERNAL WIRING
S40 S41 S44
S43 S42 S45
BREAKER STATUS SENSOR (BSS) MODULE
Page 59
WL Breaker
Courtesy of NationalSwitchgear.com
General Wiring Schematic
CubicleBus MODULES
INSTALL TERMINATING RESISTOR
POTENTIAL TRANSFORMER INPUTS
REMOTE RESET BELL ALARM
AND TRIPPED INDICATOR 79
SECOND SHUNT TRIP 52TC
MAG-LATCH FOR OPEN FUSE LOCKOUT (TO FUSE CARRIAGE)
OPEN FUSE LOCKOUT SWITCH S26
FIRST SHUNT TRIP SIGNALING SWITCH 52CS
SECOND SHUNT TRIP SIGNALING SWITCH S2CS
BELL ALARM/TRIP SIGNALING SWITCH 30, NO
BELL ALARM/TRIP SIGNALING SWITCH 30, NC
MUST BE FIRST MODULE
LEAD WIRE FROM
COMM. MODULE
120VAC SECONDARY EXTERNAL
NEUTRAL SENSOR INPUTS
GF SENSOR INPUTS
-
(N)
(L)
+
(L)
+
-
(N)
S1-
S2+
S1-
S2+
(ZSI) ZONE SELECTIVE
INTERLOCKING MODULE
X1 X2
RJ45
RJ45
1 2 3
0VDC
X8-4
DIRECT CONNECTION TO X6
TERMINAL STRIP FOR 24VDC
TRIP/CLOSE CONTROL VOLTAGE
DP WRITE
FREE 24VDC +
FREE
FREE 0VDC -
COMMON
ENABLE
WL
X8-1
X8-2
X8-3
X8-4
X8-5
X8-6
X8-7
X8-8
-
X8-9
+
X8-10
-
X8-11
+
X8-12
X8-13
X8-14
X9-1
X9-2
X9-3
X9-4
X9-5
X9-6
X9-7
X9-8
X9-9
X9-10
X9-11
X9-12
X9-13
X9-14
RJ45 PLUG
-
+
-
+
-
+
-
+
+
X7
X7-1
X7-2
CUB-
CUB+
24VDC
TRIP UNIT
POWER
0VDC
X8
F7
F2
F6
S26
S22
X9
S23
S24
WL BREAKER
(SECONDARY TERMINALS)
X7-3
X7-4
X7-5
X3
4
CUB+
24VDC
CUB-
X8-2
X8-3
X8-1
OPEN 0VDC -
CLOSE 0VDC -
CLOSE 24VDC +
X7-6
X7-7
X7-8
X6
F4 ONLY
"QUICK OFF"
F3 "UVR",
F4 "UVR td"
X5
DIGITAL OUTPUT MODULE
WITH ROTARY SWITCH
X1 X2
RJ45
RJ45
X3
4
2 1
3
0VDC (-)
0VDC (-)
24VDC (+)
WHEN COM MODULE RJ45 CABLE IS CONNECTED
TO FIRST CUBICLEBUS MODULE, X3-2 AND X3-3
CONNECTIONS ARE NOT REQUIRED, X3-1 AND X3-4
CONNECTIONS ONLY REQUIRED WHEN MORE
THAN 2 CUBICLEBUS MODULES ARE INSTALLED.
WITH NO COM MODULE, ALL X3 CONNECTIONS
ARE REQUIRED.
X6-7
X6-8
X6-14
K1 K2
OPEN 24VDC +
INTERPOSING RELAYS FOR TRIP/CLOSE
CONTROL VOLTAGES OTHER THAN 24VDC
COM15 OR 16
COMM. MOD
X7-9
F1
Y1
S12
6
1
MODBUS OR
PROFIBUS CONN.
-
S1/a
S1/b
-
S20
S2/a
S2/b
-
S3/a
S3/b
S4/a
S4/b
M
9
5
+
X6-14
X6-13
X6-12
X6-11
X6-10
X6-9
X6-8
+
X6-7
X6-6
X6-5
X6-4
X6-3
X6-2
X6-1
X5-14
X5-13
+
X5-12
X5-11
X5-10
X5-9
X5-8
X5-7
X5-6
X5-5
X5-4
X5-3
X5-2
X5-1
DIGITAL OUTPUT MODULE
CONFIGURABLE MODULE
X2
X1
RJ45
RJ45
X3 X3
1 2 3
ANALOG OUTPUT DIGITAL INPUT
X1 X2
RJ45
RJ45
4
2 1
3
0VDC (-)
24VDC (+) 24VDC (+)
(L) (N)
X6-13
+
K2
-
TRIP/CLOSE
CONTROL VOLTAGE
K1
(L)
+
FIRST SHUNT TRIP 52TC/86
-
(N)
AUX. SWITCH S1, NO, 52a
AUX. SWITCH S1, NC, 52b
-
(N)
REMOTE CLOSING COIL 52CC
(L)
+
"READY TO CLOSE" SIGNALING SWITCH 52LC
AUX. SWITCH S2, NO, 52a
AUX. SWITCH S2, NC, 52b
EMERGENCY OPEN VIA UNDERVOLTAGE RELEASE
(OPENS BREAKER ONLY WHEN UVR IS INSTALLED)
(L)
+
UNDERVOLTAGE
RELEASE (62/27)
-
(N)
AUX. SWITCH S3, NO, 52a
AUX. SWITCH S3, NC, 52b
AUX. SWITCH S4, NO, 52a
AUX. SWITCH S4, NC, 52b
(L)
+
ELECTRIC SPRING
CHARGING MOTOR 52M
-
(N)
OPTIONAL SWITCH BY CUSTOMER
4
0VDC (-)
X1
RJ45
MODULE
X2
RJ45
1 2 3
24VDC (+)
4)
X3
4
-
(N)
NOTES:
1. COMPONENT PLACEMENT PER PANEL, SWITCHGEAR, OR SWITCHBOARD DRAWINGS.
2. ALL DEVICES SHOWN IN OPEN AND/OR DE-ENERGIZED STATE.
3. ALL GROUND FAULT WIRING TO BE SHIELDED TWISTED PAIR
4. SHUNT TRIP CLEARING CONTACT ONLY WITH INTERMITTENT-DUTY SHUNT TRIPS ON FIRST SHUNT TRIP ONLY
57WL Circuit Breaker Selection and Application Guide
Page 60
WL Breaker
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Ground Fault Setting
Ground Fault Protection
When optional ground fault is
selected, the trip unit detects fault
currents that flow to ground and
represent a fire hazard to the system.
The adjustable time delay allows
selective staggering of consecutively
arranged circuit breakers.
When setting the parameters of the
trip unit, a selection can be made
between alarm and trip if the set
current value is exceeded. The cause
of the trip is displayed on an LED
when the query button is pressed.
Modules
The trip unit versions ETU745,
ETU748, and ETU776 can be retrofit-
ted with a ground fault protection
module.
Two versions of the optional ground
fault module can be ordered:
• Trip and Alarm
• Alarm only
Ground Fault Measuring Methods
Residual sensing of the ground
fault current
Direct measurement of the ground
fault current
A current transformer with the
transformer ratio 1200A : 1A is used
to measure the ground fault current.
The transformer can be installed
directly in the grounded star point
of a transformer.
Setting
The ground fault module can be set
depending on the measuring method
(see above):
Measuring method 1: in position sum I
Measuring method 2: in position G.
With trip unit ETU776, this setting is
implemented via the display and key
pad or communications.
2
Ground Fault Protection with I
Characteristic Curve
All versions of the ground fault
modules are delivered with an I
or fixed delay.
Modules are available in either Alarm
only or Alarm and Trip functions.
t
2
t
Residual sensing of the ground fault current
Direct measurement of the ground fault current
The trip unit calculates the ground
fault current by vectorial current
summation of the 3- phase currents
and the neutral conductor current.
Ground fault module GFM A 745-748 Ground fault module GFM AT 745-748
Ground fault module GFM A 776 Ground fault module GFM AT 776
58 WL Circuit Breaker Selection and Application Guide
Page 61
WL Breaker
Courtesy of NationalSwitchgear.com
Metering Voltage Details
VT / PT connections for the WL Breaker when equipped
with metering
WL power metering (“Meter Function”) can accept 3W or 4W
(LL/LN) system voltage connections.
The trip unit settings available are:
1) VT Primary Voltage (240V, 480V, 600V)
2) VT Secondary Voltage (100V, 110V, 120V)
3) VT Connection (Wye / LN, Delta / LL)
Three VTs must be used at all times.
All three VTs should be rated for the nominal system L-L voltage
(e.g. 480V) and may have either 100V, 110V or 120V secondary
voltages.
The following ratios are suggested or equivalent VTs can
be used: (Must be suppled by others)
240:120 = 2:1 (ITI Part # 460-240 or 468-240)
480:120 = 4:1 (ITI Part # 460-480 or 468-480)
600:120 = 5:1 (ITI Part # 460-600 or 468-600)
VT Accuracy:
Each Metering Module presents a purely resistive (unity power
factor) load to the transformer. Assuming no other devices
connected to the VT, a ITI type 486 VT can safely feed 10
metering modules and and still maintain 0.6% accuracy
assuming the wiring from the VT to the individual metering
modules is twisted pair and kept to a minimum length.
Phase Rotation
A-C-B
Phase Rotation
A-C-B
59WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame size 1
60 WL Circuit Breaker Selection and Application Guide
Page 63
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame size 1
Horizontal Connectors
Top view
Bottom view
61WL Circuit Breaker Selection and Application Guide
Page 64
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 1
Rear Vertical Connectors
Top view
Rear view
62 WL Circuit Breaker Selection and Application Guide
Page 65
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 1
Front Connectors
Top view
Front view
63WL Circuit Breaker Selection and Application Guide
Page 66
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 1
Front Connectors and Lugs
Top view
Front view
64 WL Circuit Breaker Selection and Application Guide
Page 67
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Fixed Size 1
Door Cut-outs
65WL Circuit Breaker Selection and Application Guide
Page 68
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 2
Interrupting class Dimension B Dimension C Dimension D
S/L
C
66 WL Circuit Breaker Selection and Application Guide
15.85 [402.5] 18.70 [475.0] 22.30 [566.5]
17.80 [452.10] 18.70 [475.0] 25.20 [640.0]
Page 69
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 2
Optional Vertical Connectors
Interrupting Class Rated Current Dimension A
S/L max. 1600 A 0.39 [10]
S/L max. 2000 A 0.59 [15]
S/L max. 3000 A 1.18 [30]
C 1600 - 3000 A 1.18 [30]
67WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 2
Optional Vertical Connectors
Top view
Rated Current Dimension A
max. 1600 A 0.39 [10]
max. 2000 A 0.59 [15]
max. 3000 A 1.18 [30]
C-class always 1.18 [30]
Rear view
68 WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 2
Front Connectors
LH side view
Front view
Rated Current Dimension A
max. 1600 A 0.39 [10]
max. 2000 A 0.79 [20]
max. 2500 A 0.79 [20]
69WL Circuit Breaker Selection and Application Guide
Page 72
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 2
3000A Front Connectors
70 WL Circuit Breaker Selection and Application Guide
Page 73
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 3
LH side view
71WL Circuit Breaker Selection and Application Guide
Page 74
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 3
Vertical Connectors and Horizontal Stabs
Top view
Top view
72 WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 3
Top view
Rear view
73WL Circuit Breaker Selection and Application Guide
Page 76
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 3
5000A Vertical Connectors
LH side view
Front view
74 WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 2 and 3
Door Cut-outs
Door cut-out and mounting holes for Door Sealing Frame
Door cut-out (after mounting Door Sealing Frame)
Door cut-out (Middle escutcheon visible)
1) Breaker mounting surface.
2) Center of breaker front panel.
3) Drill eight holes for mounting door sealing frame.
Minimal door cut-out (Only center eustcheon visible)
75WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
76 WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
Vertical Connectors
Rear view
Top view
77WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
Bottom view
78 WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
Charging and Racking
79WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
Plexiglass Cover
80 WL Circuit Breaker Selection and Application Guide
Page 83
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
Door Cut-outs
81WL Circuit Breaker Selection and Application Guide
Page 84
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 2
82 WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 2
2500/3000A 2000A 800/1200/1600A
83WL Circuit Breaker Selection and Application Guide
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UL489 Draw-out Breaker Dimensions
Frame Size 2
Vertical Connectors and Optional Horizontal Connectors
Horizontal Main
Bus Connectors
Vertical Main
Bus Connectors
Horizontal Main
Bus Connectors
Note:
Rotatable main bus connectors are only available under the following conditions:
(1) Only acceptable for FS II 800A-2000A Frame Sizes
(2) Only acceptable for short circuit ratings of 85KAIC or less
Vertical Main
Bus Connectors
84 WL Circuit Breaker Selection and Application Guide
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UL489 Draw-out Breaker Dimensions
Frame Size 2
Charging, Racking and Draw-out
85WL Circuit Breaker Selection and Application Guide
Page 88
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UL489 Draw-out Breaker Dimensions
Frame Size 3
86 WL Circuit Breaker Selection and Application Guide
Page 89
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 3
Vertical Connectors
87WL Circuit Breaker Selection and Application Guide
Page 90
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 3
Charging, Racking and Draw-out
88 WL Circuit Breaker Selection and Application Guide
Page 91
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UL489 Draw-out Breaker Dimensions
Frame Size 2 and 3
Door Cut-outs
Door cut-out and mounting holes for Door Sealing Frame
4.78
[121.5]
Door cut-out (Middle escutcheon visible)
Door cut-out (after mounting Door Sealing Frame)
5.63
[142.9]
Minimal door cut-out (Only center eustcheon visible)
1) Mounting surface of the circuit breaker or cradle.
2) Center of breaker front panel.
3) Drill eight holes for mounting door sealing frame.
89WL Circuit Breaker Selection and Application Guide
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UL489 Door Sealing Frame Dimensions
Frame Size 2 and 3
Door Cut-outs
1) Mounting surface of the circuit-breaker or cradle.
2) Center of breaker front panel.
3) Drill eight holes for mounting door sealing frame.
90 WL Circuit Breaker Selection and Application Guide
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UL 1066 Draw-out Non-fused Breaker Dimensions
Frame Size 2
91WL Circuit Breaker Selection and Application Guide
Page 94
Low Voltage Circuit Breaker
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UL 1066 Draw-out Non-fused Breaker Dimensions
Frame Size 2
3200A 2000A 800/1600A
92 WL Circuit Breaker Selection and Application Guide
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UL 1066 Draw-out Non-fused Breaker Dimensions
Frame Size 2
Horizontal Main
Bus Connectors
Horizontal Main
Bus Connectors
Vertical Main
Bus Connectors
Vertical Main
Bus Connectors
Note:
Rotatable main bus connectors are only available under the following conditions:
(1) Only acceptable for FS2 800A – 2000A Frame Sizes
(2) Only acceptable for short circuit ratings of 85kAIC or less
93WL Circuit Breaker Selection and Application Guide
Page 96
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UL 1066 Draw-out Non-fused Breaker Dimensions
Frame Size 2
Charging, Racking and Draw-out
94 WL Circuit Breaker Selection and Application Guide
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UL 1066 Draw-out Fused Breaker Dimensions
Frame Size 2
95WL Circuit Breaker Selection and Application Guide
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UL 1066 Draw-out Fused Breaker Dimensions
Frame Size 2
13.35
[339.2]
Top ventilation area (must
remain unobstructed)
5.25
[133.4]
5.25
[133.4]
0.25
[6.4]
C
L
Ø0.53
Ø[13.5]
1.75
[44.5]
0.25
[6.3]
7.89
[200.5]
C
L
7.37
[187.3]
5.18
[131.6]
5.25
[133.4]
5.25
[133.4]
10.38
[263.6]
9.25
[235.0]
2.88
[73.2]
4.00
[101.6]
1.75
[44.5]
1.75
[44.5]
0.75
[19.1]
6.97
[177.1]
1.75
[44.5]
2.31
[58.7]
23.63
[600.1]
96 WL Circuit Breaker Selection and Application Guide
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Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Draw-out Fused Breaker Dimensions
Frame Size 2
Charging, Racking and Draw-out
97WL Circuit Breaker Selection and Application Guide
Page 100
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Draw-out Breaker Dimensions
Frame Size 2
Door Cut-outs
R0.39
[R10.0]
(Max. radii, 4 plc's)
13.38
[339.9]
2.74
[69.5]
Door cut-out and mounting holes for Door Sealing Frame
R0.08
(Max. radii, 4 plcs)
[R2.0]
10.98
[278.9]
4.78
[121.5]
Ø1.42
[Ø36.0]
1.40
[35.5]
4.45
[113.0]
5.71
[144.9]
11.41
[289.9]
Door cut-out (after mounting Door Sealing Frame)
R0.08
(Max. radii, 4 plcs)
[R2.0]
0.83
[21.1]
10.98
[278.9]
4.78
[121.5]
5.19
[131.9]
10.39
[263.9]
Door cut-out (Middle escutcheon visible)
Minimal door cut-out (Only center eustcheon visible)
1.93
[49.0]
5.63
[142.9]
1) Mounting surface of the circuit breaker or cradle.
2) Center of breaker front panel.
3) Drill eight holes for mounting door sealing frame.
98 WL Circuit Breaker Selection and Application Guide
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