These instructions do not purport to cover all details or variationsin equipment, or to provide for every possible contingency to bemet 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 modifyany prior or existing agreement, commitment or relationship.The sales contract contains the entire obligation of Siemens. Thewarranty contained in the contract between the parties is the solewarranty of Siemens. Any statements contained herein do notcreate new warranties or modify the existing warranty.
For additional information, please visit our website,www.usa.siemens.com/circuitbreakers, or contact your localSiemens Sales Office.
For technical support, please contact the Technical SupportHotline at 1-800-333-7421, or submit a request through OnlineSupport: http://support.automation.siemens.com/US
For order entry, logistics, or customer service issues, pleasecontact the Customer Support hotline: 1-866-663-7324.
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Table of Contents
Features and benefits 4Breaker assembly view 5Product overview 6Draw-out cradle assembly view
Electronic trip units (ETUs) 8 - 14
ETU models and features 8 ETU communication 10ETU metering function 11 Alarm parameters 12 Extended relaying 12Function overview of the ETU 13 - 14
Mushroom Head Emergency Open buttonDoor sealing framePlexiglass breaker coverBreaker lifting deviceBreaker manual charging handle replacementBreaker shaft extensionBreaker maintenance greaseBreaker replacement feetWL Circuit Breaker certified test reportWire for N + GF CTs from X8.11 & 12 to electronic tripCubicle-bus internal wiringReturn 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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Introduction
Businesses are becoming increasingly more intelligent aboutthe way they consume energy. Industrial and Commercial energyconsumers are continuously looking for practical and efficientmethods of measuring their energy usage while simultaneouslyensuring any possible downtime is minimized. At Siemens weunderstand those needs and we have developed products andsolutions to help energy consumers achieve their goals.
One of our solutions begins with our world-class WL CircuitBreakers. The WL line-up of breakers developed by Siemenscombines decades of patented circuit breaker protectionexperience with the latest technology in circuit breakerperformance and communication.
A good example of our innovative technology is, DynamicArc-Flash Sentry® (DAS). DAS is a solution that allows usersthe ability to automatically lower the down-stream availablefault current when facility personnel are nearby the electricalequipment. Helping our customers provide a safer work-placeenvironment is an important part to our overall solutions.
Other valuable aspects that complement our solutions are theWL circuit breaker’s ability to gather energy and environmentaldata and send it to a central or remote monitoring networksystem. You’ll find these capabilities and more when you takea 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 ofbreakers to other compartments and reducing the footprintof the breaker enclosures.
• Ready-to-close indication: Built-in check points of thebreakers mechanical operator provide an additional layer of safety and external controls by inhibiting the breaker fromclosing 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 thebreaker 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 terminalsor exchanging sensors to match load change requirements.
• Modular trip unit: Upgrading to a higher or lowercurrent rating, adding ground fault, power monitoringor communication is cost effective and expandableusing 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 electricaldistribution applications like waste water treatment, industrialplants, hospitals, transportation systems and data centers justto name a few. Yes, mission critical applications trust the SiemensWL circuit breakers to operate safe and reliably. The compactmodular design provides higher power density in a section orline-up of distribution gear. Components like spring-chargingmotor, shunt trips, and trip units are common across the entireline of breakers. That allows users the ability to stock fewerspare parts or exchange options if necessary. Common optionsand accessories also make learning how to order, maintainand operate the WL much easier than most breakers on the market today.
WL circuit breakers are manufactured and performance testedto comply with UL489 and UL1066 standards for listed products.
UL/CSA 489 Listed type WL low voltage insulated case circuitbreakers are generally intended to provide service entrance, feeder, and branch circuit protection in accordance with UL/CSA 489Standard for Safety for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures. This versatile familyof insulated case circuit breakers is acceptable for use withinlow-voltage switchboards (i.e. UL 891), low-voltage motor controlcenters (i.e. UL 845), and other types of industrial control equipment(i.e. UL 508 series). Certain options and maintenance capabilitymay 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 breakersare 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 acceptablefor 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 tothe UL/CSA 489 Listed circuit breakers. UL file numbers E240124, E240232, E240233 and E236299 apply.
4WL Circuit Breaker Selection and Application Guide
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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 alarmand 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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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
1715
13
20
1614
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
6WL 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. RemoteReset
20. Breaker Data Adapter (BDA) forInternet Connection
21. Multi Angle LCD Module
22. Ground Fault Protection Module
23. Rating Plug
24. Metering Function (+ wave formsand harmonics)
25. 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 ofabnormal occurrences, such as overloads or faults that can leadto electrical power system failure.
The methods for detecting and clearing such abnormalitiesand restore to normal operation is an engineered technique.Adequate protection requires constant measurements of certainsystem quantities, such as voltages and currents, comparingthose system quantities, or some combination of the quantities,to a threshold setting computed by a systems engineer andset into an electronic trip unit like those available on the WLbreakers. It’s equally important for power system protectionto perform under normal operating conditions. If the abovethresholds are set too low the power may be interruptedunnecessarily causing loss of productivity or safety provisions.The WL circuit breaker offers a practical means of settingpower system protection through vast selectivity available inits Electronic Trip Unit (ETU). WL ETUs have a wide range ofprotective settings for implementing simple or complexcoordination 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 ratingof the breaker with minus 0% tolerance; that means noinstantaneous override whatsoever. EIP further enables thecircuit breaker to be applied up to the full interrupting ratingof the breaker on systems where the available fault currentexceeds the withstand rating, even with LS-only trip units.
• Dynamic Arc-Flash Sentry (DAS): Allows you the ability toexecute a faster coordinated trip condition should an arcfault event occur while personnel are within the arc flash boundary. When the presence of personnel is no longer inthe 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 Iover 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 ofcoordinated overload protection when overload fuseprotection is also provided.
amps and the long-time delay is set to 10 seconds, a fault currentof 12,000 amps (6 x 2000) will cause the breaker to trip after10 seconds. Long-time is an inverse of I
2
t ramp function. Thismeans the higher the current, the shorter the time the circuitbreaker will remain closed. An Alarm LED indicator will flashduring the delay period and a separate “Trip L” indicator mayturn on if the breaker trips on long-time function.
Short-time trip
The short-time pickup adjustment is used to set the level ofhigh current the breaker will carry for a short period of timewithout tripping. This adjustment is set in multiples of thevalue of the rating plug (Ir). Together with the short-time delay,this adjustment allows downstream breakers time to clear shortcircuit faults without tripping upstream breakers. Short-timedelay is used to set the time interval the breaker will wait beforeresponding to the current value selected by short-time pickup.
2
There are two modes of operation: fixed and I
t. The I2t delayhas the characteristic of being inversely proportional to thesquare of the magnitude of the current. This means higherovercurrent conditions have shorter delays. An Alarm LEDindicator 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 currentlevel at which the breaker will trip without an intentionaltime delay. Non-delayed tripping as a result of severe over-current minimizes potential damage to the electrical systemand equipment.
Ground fault
The ground fault pickup adjustment is used to set the level ofground current at which circuit interruption will be initiated.Together with ground fault delay, this adjustment allowsselective tripping between main and feeder or downstreambreakers.
The ground fault delay adjustment is used to set the time interval(in seconds) the breaker will wait before responding once theground fault pickup level has been reached. The available ground
2
fault delay settings available are: inverse time (I
t) or fixed delay.
ETU basic functionsLong-time trip
The long-time delay adjustment is used to set the tripping delayof the circuit breaker based on the magnitude of the overcurrentcondition (6 times l
8WL 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 IAdjustable short-time delay and pick-up X X XSelectable and adjustable neutral protection X X X Dual prDynamic arc-flash sentry (DAS) X
Ext
Parameterization by rotary switches X X Parameterization by communication (absolute values) XParameterization by menu/keypad (absolute values) XRemote parameterization of the alarm functions XRemote parameterization of the relay functions X
Alphanumeric display O OXGraphical display X
Power metering function O O OCommunication via PROFIBUS-DP O O OCommunication via the MODBUS O O OCommunication 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 networkcalled CubicleBus. The CubicleBus network ensures all Siemensdevices are able to transmit data reliably and efficiently. The ETUcan not be connected directly any other network so the use ofconverters are necessary to allow communication between theETU and the outside world. The WL has three types of convertersto allow communication between the ETU and computer typeequipment. The three converts are:
• PROFIBUS (COM15)
• ModBus (COM16)
• HTML or TCP/IP (BDA)
The WL PROFIBUS converter is model ‘COM15.’ The COM15 deviceacts as an interface between the WL breaker and the informationenvironment. A joint device master file (GSD) can be used forintegrating WL circuit breakers in a PROFIBUS-DP network. Theadvantage of this joint communication profile is that thesame software can be used for automation, monitoring andcontrol systems.
The WL ModBus converter is model ‘COM16’. The COM16 deviceenables the WL breaker to be connected to any Modbus masternetwork. Universal Modbus mapping can be used to allow custommonitoring and controls with a centralized monitoring system.The Modbus port is configured for RS485 connectivity andcan easily be daisy-chained to several WL breakers to create aserial-network suitable for connecting to a LAN or WAN network.
The WL HTML or TCP/IP converter is called ‘BDA.’ The BDAis a microcomputer with an embedded Linux operatingsystem running a web server application. The HTML pagesand JAVA codes are stored internal to the BDA and can beaccessed with an external PC web browser. All of the viewableweb pages are stored in the BDA. The BDA communicates to theETU through a front connected ribbon-cable. The PC accessesthe BDA through an integral DB-9 serial port or an RJ45Ethernet port.
All three converters require a 24VDC Class 2 power supply.See External Accessories for more information on availablepower supplies.
10WL 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 hasunparalleled power metering functionality. True RMS currentsensing 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 measurethe following:
Potential transformers (PTs) are required to step down thesupply voltage to a level that is suitable for local inputconnection 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. Themeasured values can be sent to a central database forfuture power analysis or consumption reports.
Metering is not field installable – it must be configured inthe initial breaker purchase.
Event log
The event log is very extensive. Information regarding thelist of events can be found in the WL operation manual orcommunication 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 alarmset-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 canmonitor the following criteria and initiate a trip if the valuesare 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
12WL Circuit Breaker Selection and Application Guide
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ETU Function Overview
Basic functions ETU745
Long-time overcurrent protectionFunction can be disabled – Setting range I
0.65, 0.7, 0.8, 0.9, 1Switch-selectable overload protection (ISetting 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 tNeutral protectionFunction can be disabled (via slide switch)
N
N-conductor setting range IShort-time overcurrent protectionFunction can be disabled (via rotary switch) Setting range I3, 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, OFFSetting range of time delay I(seconds) 0.1, 0.2, 0.3, 0.4
Zone Selective Interlocking (ZSI) function per CubicleBUS moduleInstantaneous overcurrent protectionFunction can be disabledExtended Instantaneous Protection Instantaneous is active when disabled
I
Setting range I
0.8 x IGround fault protectionTrip and alarm function Detection of the ground fault currentby residual summing method Detection of the ground fault currentby direct sensing method Setting range of the Ig for trip A, B, C, D, E (100 ... 1200A)
G
Setting range of the Igfor 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, 0.5Setting range time delay tZSI 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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ETU Function Overview
Basic functions ETU748 ETU776
Long-time overcurrent protectionFunction can be disabled – – Setting range I
0.6, 0.65, 0.7, 0.8,
0.9, 1 Switch-selectable overload protection (ISetting range of time delay class tR at I2t
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 tNeutral protectionFunction can be disabled
N
N-conductor setting range IShort-time delayed overcurrent protectionFunction can be switched ON/OFF
Setting range I3, 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 delayshort-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 moduleInstantaneous overcurrent protection
Function can be disabled,Extended Instantaneous Protectionis enabled when OFF –
I
Setting range IGround fault protection
Trip and alarm function Detection of the ground fault currentby 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-selectableground 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
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
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Factory Installed Options
1
Breaker mounted options
Ground fault module
The ground fault module (GFM) is used to detect currentflowing through the grounding conductors which may presenta hazardous condition. The module can be field installed butcan’t be removed once installed. Residual sensing by phasevector summation or direct sensing can be selected on themodule or via the setup of the ETU776. Ground fault modulesmay be ordered as alarm only or as alarm and trip. Alarm willprovide a visual and communication notification. Alarm andtrip 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-outassembly are mounted in the breaker and accessible through aknockout in the breaker front cover. The key is removable onlywhen the breaker is locked open. If a custom, coordinatedkey/cylinder is required, order the lock provision-only. The lockcylinder and matched key must then be ordered separately fromthe 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 controlor remote indication of the breakers main contact position (openor closed breaker). The Normally Open (NO) contacts are openwhen the breakers main contacts are open. The Normally Closed(NC) contacts are closed when the breakers main contacts areopen. The contacts are wired individually to the secondarydisconnects for user connectivity. See breaker wiring diagramfor 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 3ADC Operation Voltage 24, 125, 250VDC Continuous Current 5AMaking Current 1.1A @ 24 or 125VDC, .55A @250VDCBreaking Current 1.1A @ 24 or 125VDC, .55A @250VDC
Breaker status sensor (BSS)
BSS is an integrated circuit device that measures the internalbreaker temperature, monitors breaker main contact position(open or closed), bell alarm status, shunt trip status, breakerready-to-close and closing spring charged status. All statusconditions and information is transmitted through theCubicleBus network as real-time data. A COM16 (Modbus),COM15 (PROFIBUS) or a BDA (breaker display adapter) accessorycan be used to export the BSS CubicleBus data to external computer or monitoring equipment. See breaker wiring diagram for supplyterminal locations. Included with COM15 and COM16.
Operation counter
For monitoring the number of breaker operations (open andclose) a numerical operations counter is available. This counteris only suitable for breakers equipped with the spring-chargingmotor option. The counter mounts to the motor assembly andwill register manual and electrical breaker operations. Counteris non-resettable up to 100,000 operations. Counter ships withavailable pre-service operations for field setting to zero.
1
See page 85 for field install part numbers.
Characteristics table
Operating Voltage 24VDCPeak Inrush Current 110mAMax. Continuous Current 40mAAmbient Operation Temperature -25 to 70ºC
15WL Circuit Breaker Selection and Application Guide
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Factory Installed Options
1
Bell alarm contact and reset coil
The bell alarm contacts are mechanically activated by the tripunit solenoid. If a breaker trip condition occurs, the bell alarmform-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 breakertrip 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
RemoteVoltage 240VAC 50/60HzReset Coil Continuous Current 5AAC Operation Making Current 8A Breaking Current 5ARemoteVoltage 24, 48,125 or 250VDCReset Coil Continuous Current 5ADC 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 thebreaker front cover to isolate the open and close buttonsfrom unintentional use. Shrouds may be used in combinationor like configuration.
To isolate the open and close buttons from unintentional use,transparent padlock covers can be installed in lieu of the shroudoption. Two padlocks may be used with a latch diameter of 3/8inch maximum (padlocks by others).
Close coil
To remotely close the WL breaker, a close coil must be used witha momentary electrical source. Only one close coil can be usedper breaker. Charging springs must be charged and breaker openprior to activating the close coil. See breaker wiring diagram forsupply 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 orSuperior types and uniquely keyed.
Characteristics table
120VAC Range 104 - 127VACClose Coil 240VAC Range 208 - 254AC Operation Power Consumption 120W for 50ms (5% duty cycle)Breaker closing time 50ms from point of signal24VDC 14 - 28VDC48VDC 28 - 56VDCClose Coil 125VDC 70 - 140VDCDC Operation 250VDC 140 - 280VDCPower Consumption 120W for 50ms (5% duty cycle)Breaker closing time 50ms from point of signal
1
See page 85 for field install part numbers.
16WL 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 theclosing springs can be installed on the breaker front cover. Thisprovision does not prevent electric charging of the closing springsand the breaker can be mechanically closed if the closing springis charged prior to padlocking the charging handle. One padlockmay be used with a latch diameter of 3/8 inch maximum (padlockby 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 willresult 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 energizedby a remote power source. An auxiliary contact is wired in serieswith the shunt trip to remove the current from the coil after thebreaker is opened. Two shunt trip coils may be installed in abreaker if dual supply sources or control circuits are required.An optional status contact may be selected with the second shunt triptoprovide 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 - 127VACAC operation 240VAC range 208 - 254VACPower consumption 120W for 50ms (5% duty cycle)Min. closing time 50ms from point of signalTrip coil 24VDC range 14 - 28VDCDC operation 48VDC range 28 - 56VDC125VDC range 70 - 140VDC250VDC range 140 - 280DVCPower 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 onthe WL breaker, an optional contact can be added to remotelymonitor the ready-to-close conditions. Closing is ready if all ofthe 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 -250VDCclose Continuous current 3Acontact Making current .4A @24-125VDC, 5A @120-240VACBreaking current .2A @24-125VDC, 3A @120-240VAC
Shunt trip (continuous duty)
The continuous duty shunt trip is available for 100% duty cycleand can hold the WL breaker open during an electrical or manual“close breaker” attempt (i.e. lock-out). The continuous duty tripmay be used in conjunction with a standard shunt trip solenoidfor 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 nominalcoil) Power consumption 15W / 15VAMin. shunt trip actuation 60 msOpening time of breaker 80 msSmallest 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 formonitoring an undervoltage trip or second shut trip coilposition. The contact will be wired to the secondary contactsof the breaker for customer connections or wired to the BreakerStatus Sensor (BSS) if communications is installed on thebreaker. Contact is 1NO configured.
Characteristics table
Signaling Voltage 127 - 240VAX, 24 - 125VDCcontact Continuous current 3AMaking current 1A @24 - 125DVC, 5A @120 - 240VACBreaking current 1A @24 - 125DVC, 3A @120 - 240VAC
Spring-charging motor
The spring charging motor is used to automatically charge thebreakers closing spring so the breaker is suitable for closing oncommand. Motor charging is typically used for remote breakeroperation or as an alternative to local manual charging. Themotor assembly can be easily installed in the field and includesan automatic cut-off switch which disconnects the current uponfull charge of the closing spring mechanism.
Undervoltage release
In the event of loss or low level control circuit voltage, anundervoltage release may be used to automatically openthe circuit breaker. To prevent nuisance breaker openingsfrom 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 open120 - 240VACCoil voltage tolerance 85 - 110% of nominal24 - 250VDCCoil voltage tolerance 85 - 126% of nominal Supply voltage 120, 240VAC or 24, 48, 125, 250VDCPower consumption 200VA inrush/ 5VA continuous(same in Watts for DC) Opening timeof breaker 200 msUVR w/o time delay(dual setting) 80 ms or 200msUVR with time delay(adjustable delay) 0.2 to 3.2 sec.
Characteristics table
Spring- 120 - 240VAC range 85 -110% of nominalcharging 24 - 240VDC range 70 - 126% of nominalmotor Power consumption 110WMax. charging time 10 secondsFuse protection rating 24-60V 6A, 120-240V 3A(slow-blow)
1
See page 85 for field install part numbers.
18WL 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 aredescribed to highlight the functional characteristics of thesefactory installed cradle options.
Secondary disconnects
Secondary disconnects are used to interconnect external breakercontrol and signaling circuitry to the WL breakers factory wiredcircuitry. Three types of external connection terminals areavailable. 1. Screw connection, 2. Tension spring connectionand, 3. Ring lug connection. Tension spring connection terminalsare standard for fixed mounted breakers.
Characteristics table
Wire connection type Number of wires and sizes
Secondary Screw compression 1 x 14AWG or 2 x 16AWGdisconnects Tension spring compression 2 x 14AWGRing lug terminal 2 x 14AWG or 2 x 16AWG
PROFIBUS or MODBUS communication
PROFIBUS or MODBUS communication requires a COM15 orCOM16 converter to transmit WL breaker data to external PCsor PLC monitoring systems. External communication connectionto either module is through a DB-9F connector.
Characteristics table
Operating voltage 24VDCPeak inrush current 280mAMax. continuous current 125mAAmbient temperature -25 to 70ºC
Isolation shutters
When removing a draw-out breaker from its connected positionthe primary contacts become exposed and more accessible topersonnel in the breaker compartment. Isolation shutters reducethat accessibility to the primary terminals by automaticallyclosing the access ports to the primary terminals wheneverthe breaker is disconnected or withdrawn. After removal of thebreaker from its compartment, the shutters may be padlockedto inhibit manual shutter opening while breaker is not inthe 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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WL Circuit Breaker
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Cradle Factory Installed Options
1
Arc chute cover
The arc chute cover is available for isolating enclosure materialor parts located above the circuit breaker where heat andexhaust gases may exit from the breakers arc chutes. Arc chutecovers are not available for fixed mounted breakers and limitedto select draw-out breaker types.
TOC (Truck Operated Contacts)
For draw-out breaker applications a TOC device is available toprovide remote indication of the circuit breakers primary andsecondary contact connections (racking positions). Whenthe breaker is racked into a connected, test or disconnectedposition, it activates TOC switches for external user circuits.
MOC (Mechanism Operated Contacts)
Mechanism Operated Contacts (MOC) are a cradle mountedaccessory which indicate the state of the breaker’s internalcontacts (open or closed). MOCs are typically utilized whenadditional auxiliary contacts are necessary – above and beyondthe number configurable in the circuit breaker – although theymay also be used in lieu of the internal auxiliary switches. Each
a
MOC assembly includes 4 ‘
’ and 4 ‘b’ contacts. Two different MOCassemblies are available. One version operates when the circuitbreaker is in both the “TEST” and “CONNECTED” positions, andthe 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 isin 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 deviceis 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 3ADC operation Voltage 24, 125, 250VDCMaking current 1.1A @ 125VDC,.55A @250VDCBreaking current 1.1A @ 125VDC,.55A @250VDC
TOC Switch Breaker disconnected = primary Breaker in test = primary Breaker connected = primaryand secondary contacts contacts disconnected and and secondary contactsare 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 contactsOption 3 0 form C contacts 0 form C contacts 6 form C contacts
AC voltage 120, 240VACAC continuous current 10ATOC Contact Ratings AC making/breaking current 6A@120V, 3A@240VACDC voltage 24, 48, 125, 250VDCDC continuous current 6A, 1A, 1ADC making/breaking current 6A, 0.22A, 0.11A
1
See page 85 for field install part numbers.
20WL 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 SiemensSITOP power supply. The SITOP power supply is a class 2 rateddevices suitable for supporting loads of 2.5 or 3.8 amps. DIN railmounting 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-heldtester 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 breakerperforming a full function test of the ETU and the trip actuator.Cables for 120VAC power supply and ETU connection is includedwith the tester. Order part number WLTS
Breaker display adapter (BDA)
The BDA can be used to read or modify the breaker ETU andCubiclebus parameters using a laptop, pocket PC or remotedesktop PC. Circuit breakers can be parameterized individuallyusing one BDA with similar or different parameters. No softwareis required as the embedded software interface is through a PCbrowser. Connectivity to a PC or network can be serial (RS232) orEthernet (TCI/IP) addressed. If the breaker ETU is energized with24VDC control power the BDA can be powered through theinterconnecting ribbon cable. Order part number WLBDAP
Mechanical breaker interlocks
Mechanical interlock options are available for fixed or draw-outbreakers. Interlocking is managed through cable connectionsbetween two or three breakers less than 6 meters apart. Lockkit includes 2.0 meter interlocking cable and mechanism formounting to a single breaker.
For fixed breaker frame size 1 order part number WLNTLKF1For 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 CTis available. Termination screws are integral to the mold forpoint-to-point wiring without the use of terminal blocks orwire couplers. Metering ratios range from 800:5 to 5000:5.CTs include mounting hardware.
A single piece housing that is compact and designed to fit aroundphase or neutral bussing. Termination screws are integral to themold for point-to-point wiring without the use of terminal blocksor wire couplers. Metering ratios range from 800:5 to 5000:5.
For MDGF draw-out breaker applications, a three phase iron-core CT is available. The MDGF CTs are physically the same asthe 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 aneutral CT.
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WL Circuit Breaker
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Accessories
Neutral current sensor – 4-wire residual ground fault
For 4-wire residual ground fault protection we offer neutralcurrent sensors with or without bus bar coupling. The sensors arecomparable to the sensors used within the breaker and connectedto the ETU. This sensor must also be wired to the ETU throughdesignated secondary disconnects on the breaker.
Without copper bus adapters:3” max bus bar width order part number WLNCT23 - 5” bus bar width order part number WLNCT3With copper bus adapters:3” max bus bar width order part number WLNCT2CB3 - 5” bus bar width order part number WLNCT3CB
Breaker lifting
The breaker lifting yolk is designed to transport the WL breakerwhen using a hoist or other lifting equipment. The device isexpandable to conform to all three WL frame sizes and easilyattaches to specified lift points on the breaker. Order partnumber 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 whichprovides additional personnel protection. WLRBRD
Breaker door cover
A transparent hinged door cover is available to provide IP55protection. Provision for padlocking included. Fits frame size 2and 3 breakers. Order part number WLPGC
Door sealing frame
For openings around the door cutout of the breaker, this rubberdoor 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 becarried using a forklift or similar device. WLHOIST
23WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Accessories
CubicleBUS modules
External CubicleBUS modules enable the WL Circuit Breaker away to interface with external switchgear controls or buildingmanagement systems. They can be used, for example, to activateanalog displays or devices, transmit circuit breaker status andcause of trip, or read external device control signals. Onemodule is suitable for zone-selective interlocking main andbranch breakers.
Three different CubicleBUS modules can output data from theCubicleBUS system (two digital output modules and one analogoutput module). A digital input module can transmit data fromthe switchgear or system to a PROFIBUS/MODBUS master devicelike a power meters or logic controllers.
Digital Output Module with Rotary Switch – The digital outputmodule can be used to output six events. These events can bewarnings or trips and can be used for external annunciation orcontrol. The load shedding and load restoring signals can enablea load to be switched ON or OFF automatically. Voltages of up250V 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 externalCubicleBUS ZSI module must be implemented. The zone selective interlocking (ZSI) module provides the complete range ofselectivity with the short delay time of tZSI = 50 ms, irrespectiveof the number of levels and the location of the short-circuit ina distribution system. Its benefits become even more apparent,the higher the number of levels in large systems and the longerthe resulting delay times. By shortening the time, the ZSI modulesignificantly 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 mostimportant measured values sent via the CubicleBUS to analogindicators (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 ... 20mAand a 0 ... 10V interface.
Digital input module
The digital input module enables up to six additional binarysignals (24V DC) to be connected. Signals, such as breakerstatus, arc-flash current reduction, over-temperature conditionsor control circuit status switchgear, can be transmitted directlyto the power monitoring network.
A total of 6 inputs are available in the “BUS Input” Switchposition. Six inputs are also available if the rotary switch is inthe “Parameter Switch” position, although the first input causesthe active parameter set to change. If the connected ETU doesnot 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
24WL Circuit Breaker Selection and Application Guide
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WL Circuit Breaker
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Accessories
Fixed-mounted breaker front bus connectors
Front connector bus kits are available for adapting WL breakerprimary mounting stabs to a standard NEMA bussing and bolt-hole pattern. NEMA bolt connection is accessible from the frontof the breaker for ease of installation or removal of breaker insidean enclosure. Kit includes the required bus and hardware formounting one 3-pole set of adapters to a breaker.
Frame size 1, 1200A frame, 85 kAIC at 480V, order part number WLH1F12CONULFrame size 2, 1600A frame, 100kAIC at 480V, order part number WLL2F16CONULFrame size 2, 2000A frame, 100kAIC at 480V, order part number WLL2F20CONULFrame size 2, 3000A frame, 100kAIC at 480V, order part number WLL2F30CONULFrame size 3, 4000 to 5000A frame, 100kAIC at 480V, order part number WLL3F50CONUL
Mechanical lug connector kits are available for connecting 800 to2000A 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 availablefor adapting WL breaker primary mounting stabs to a standardNEMA bussing and bolt-hole pattern. Adapters also rotate theprimary 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 one3-pole set of adapters to a breaker.
Frame size 1, 1200A frame, 85 kAIC at 480V, order part number WLH1R12CONULFrame size 2, 1600A frame, 100 kAIC at 480V, order part number WLL2R16CONULFrame size 2, 2000A frame, 100 kAIC at 480V, order part number WLL2R20CONULFrame size 2, 2500A frame, 100 kAIC at 480V, order part number WLL2R25CONULFrame size 2, 3000A frame, 100 kAIC at 480V, order part number WLL2R30CONULFrame size 2, 800A to 3000A frame,150 kAIC at 480V rated breaker only order part number WLC2R30CONULFrame size 3, 4000A to 5000A frame,100 kAIC at 480V order part number WLC3R50CONUL
25WL Circuit Breaker Selection and Application Guide
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WL Power Circuit Breaker
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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
23456789101112131415
Miscellaneous Options
26WL Circuit Breaker Selection and Application Guide
Draw-out breaker efficiency (Watts loss at IFixed-mount breaker efficiency
(Watts loss at IAmbient 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
S 65 65 800 X X S 2 F 3 0 8 S 65 65 800 X X S 1 D 3 0 8S 65 65 800 X X S 2 D 3 0 8S 65 65 1200 X X S 1 F 3 1 2S 65 65 1200 X X S 2 F 3 1 2 S 65 65 1200 X X S 1 D 3 1 2S 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 SS 65 65 2000 X X S 1 F 3 2 0 S 65 65 2000 X X S 2 F 3 2 0S 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 6C 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 5C 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 0C 150 100 5000 X X C 3 F 3 5 0C 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 91011 12 13 14 15
S2D316
29WL Circuit Breaker Selection and Application Guide
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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 91011 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)
ProtectiveTrip unit function LCD display Ground faultmodels L S I Alpha num. Alarm Trip
ETU745 X (X) (X) CETU745 X (X) (X) X DETU745 X (X) (X) X EETU745 X (X) (X) X X FETU745 X (X) (X) X X GETU745 X (X) (X) X X X H ETU748 X X J ETU748 X X X K ETU748 X X X LETU748 X X X X NETU748 X X X X P ETU748 X X X X X QETU776 X (X) (X) VETU776 X (X) (X) X W ETU776 X (X) (X) X X Y
(X) Indicates function can be disabled by user1 Neutral protection “N” is available as standard.
1)
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WL Insulated Case Circuit Breaker
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UL 489 Listed Catalog Number
Bell alarm, breaker ready-to-close, auxiliary contacts
Bell alarmRemote reset Breaker Breaker open/closecoil voltage Form C ready-to-close auxiliary switchesACDC contacts 1
X A XB X C X DX X EX X FX X GX X HXXI X X X JX 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 R240 250 X X S 24 X X T 48 X X U120 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 891011 12 13 14 15
Shunt trip
Operation voltage ACDC 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 P120 125 X X R 240 250 X X S
Status Continuous duty coil
None X
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WL Insulated Case Circuit Breaker
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UL 489 Listed Catalog Number
Undervoltage Release (with or without time delay) or 2nd Shunt Trip
Operation voltage UVR UVR UVR statusACDC without delay with delay contact (1NO) shunt trip
NoneX
24 X A48 X B 120 125 X C 240 250 X D48 X E 120 125 X F 240 250 X G24 X H48 X J 120 125 X K240 250 X L24 X X M48 X X N 120 125 X X P 240 250 X X Q48 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 91011 12 13 14 15
Charging motor, motor switch, operations counter
Charging motor operation voltage Motor cut-off Operations ACDC
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 P120 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.
32WL 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 ACDC
24 A
120 125 C240 250 DXG
24 X N24 X P48 X S
120 125 X W120 125 X Y240 250 X 2240 250 X 324 X X Q48 X X U120 125 X X Z240 250 X X 424 X X R48 X X V120 125 X X 1240 250 X X 5XXLXXM
XF
B
48
48
MODBUS
2
1 1
PROFIBUS
X
T
X
2
H
1 2 3 4 5 6 7 8 91011 1213 14 15
None
X
Breaker locks
Key lock breaker Key lock breaker Padlock provisions for Padlock provisionsOPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
XAXCXEXFXXGX 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)
XBXCX 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
L 100 85 1600 X X L 2 Y 3 1 6 S S LL 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 SL 100 85 2500 X X L 2 Y 3 2 5 S S LL 100 85 3000 X X L 2 Y 3 3 0 S SL 100 85 3000 X X L 2 Z 3 3 0 S SL 100 85 4000 X X L 3 Y 3 4 0 S S LL 100 85 5000 X X L 3 Y 3 5 0 S SL 100 85 5000 X X L 3 Z 3 5 0 S S
34WL 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 ACDC 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 91011 12 13 14 15
Undervoltage release (with or without time delay) or 2nd shunt trip
Operation voltage UVR UVR UVR status ACDC without delay with delay contact (1NO) trip
NoneX
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 ACDC
24 A 48 B120 125 C 240 250 D24 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
ACDC
None X
X G 24 A 24 X N 48 B 48 X S 120 125 C120 125 X W 240 250 D
240 250 X 2 X H
24 X P 48 X T 120240 250 X 3
125
switch counter
None X
1
Modbus
PROFIBUS
X
1
Switch catalog number
1 2 3 4 5 6 7 8 91011 12 13 14 15
Y
1
Requires 24VDC power supply. Power metering not available on non-automatic switches and BSS is included.
36WL 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 provisionsOPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
None X
XAXCXEXFXXGX 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 91011 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 WLL2F16CONULFS2, 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
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
38WL 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
Clas240VACMax ampere 480VAC600VACrating (A) 1 2 3
S 65 65 800 X S 1 3 0 8 SS 65 65 1200 X S 1 3 1 2S 65 65 1200 X S 2 3 1 2S 65 65 1600 X S 1 3 1 6 SS 65 65 2000 X S 1 3 2 0S 65 65 2000 X S 2 3 2 0 L 100 65 800 X L 1 3 0 8
LL 100 65 1200 X L 1 3 1 2L 100 85 1200 X L 2 3 1 2L 100 65 1600 X L 1 3 1 6 LL 100 65 2000 X L 1 3 2 0 LL 100 85 2500 X L 2 3 2 5 LL 100 85 4000 X L 3 3 4 0 LC 150 100 800 X C 2 3 0 8 CC 150 100 1600 X C 2 3 1 6 CC 150 100 2500 X C 2 3 2 5 CC 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 XLock breaker in OPEN position (Kirk lock) ALock breaker in OPEN position (Superior lock) BDouble-key lock breaker in OPEN position (Kirk lock) CDouble-key lock breaker in OPEN position (Superior lock) DProvision only - Lock breaker in OPEN position EProvision 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 101112 131415
rame size
F
X
X
X
X
X
S2308
S2316
L2308
L2316
L2320
L2330
L3350
C2312
C2320
C2330
C3350
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 XArc chute cover s (FS1 only) CArc 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 XB
X X D X X X X F X XXH
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 101112131415
y – except Class C)
B
C
E
G
40WL 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 – 800:5WLG8005MCT2 Rating – 1200:5WLG12005MCT2 Rating – 1600:5WLG16005MCT2 FS2 Rating – 2500:5WLG25005MCT2 Rating – 3000:5WLG30005MCT2
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 254VAC50 65 85 100 200 50 65 85 100 200
508VAC50 65 85 100 200 50 65 85 100 200 600VAC— — — — 200 — — — — 200635VAC50 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 IDraw-out fused breaker efficiency (Watts loss at rated IAmbient operating temperature (ºC) -25 to40 -25 to40 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 254VAC65 85 100 200 65 85 100
(kAIR RMS) 50/60 Hz 508VAC65 85 100 200 65 85 100
635VAC65 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
42WL 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 254VAC150 200 85 100 150 200 85 100 150 200
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 0F 200 200 800 X 400 F 2 A 3 0 AF 200 200 800 X 600 F 2 A 3 0 BF 200 200 800 X 800 F 2 A 3 0 CF 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 KF 200 200 1600 X 400 F 2 A 3 1 AF 200 200 1600 X 600 F 2 A 3 1 BF 200 200 1600 X 800 F 2 A 3 1 CF 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 KF 200 200 2000 X 400 F 2 A 3 2 A F 200 200 2000 X 600 F 2 A 3 2 BF 200 200 2000 X 800 F 2 A 3 2 CF 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 HF 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 91011 12 13 14 15
44WL 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 sizecurrent rating (A) 2 3
200 X A225 X B250 X C300 X D315 X E350 X F400 X G450 X H500 X J600 X K630 X L700 X M800 X X N1000 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 91011 12 13 14 15
Electronic trip units(ETU)
Trip unit Protective function LCD display Ground fault moduletype 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 ETU748X ETU748 X X X L ETU748X ETU748 X X X X P ETU748 X X X X X Q ETU776 X (X) (X) V ETU776 X (X) (X) X WETU776 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 alarmRemote reset Breaker Breaker open/closecoil voltage Form C ready-to-close auxiliary switchesACDC contacts 1
X A XB X C XD X X EX X FX X GX X HXXI X X X JX 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 R240 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 + 2b4a + 4b
Breaker catalog number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Shunt trip
Control voltage ACDC 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
46WL 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 shuntACDC 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 R125 X X S 120 250 X X T
Charging motor, motor switch, operations counter
Charging motor operation voltage Motor cut-off Operations ACDC
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 P120 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 91011 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 ACDC
24 A48 B120 125 C240 250 DXGXH24 X N24 X P48 X S48 X T120 125 X W120 125 X Y240 250 X 2240 250 X 324 X X Q48 X X U120 125 X X Z240 250 X X 4
24 X X R48 X X V120 125 X X 1240 250 X X 5XXLXXMXF
OPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
None X
XA
X C
XE
XF
XXG
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
XB
XC
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.
48WL 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
240VACMax 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
FF 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 FF 200 200 1600 X 1000 F 2 S 3 1 E S S FF 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 FF 200 200 2000 X 1000 F 2 S 3 2 E S S FF 200 200 2000 X 1600 F 2 S 3 2 G S S FF 200 200 2000 X 2500 F 2 S 3 2 J S S FF 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 1011 12 13 1415
F2S30FSS
F2S30KSS
F2S31FSS
F2S31HSS
F2S31KSS
F2S32FSS
F2S32HSS
F2S32KSS
49WL Circuit Breaker Selection and Application Guide
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 shuntACDC 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 R125 X X S 120 250 X X T
1
trip
NoneX
1
Status contact only available when communication is not installed. Signal is sent via communication in lieu of status contact.
50WL 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 ACDC
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 P120 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
ACDC Modbus
None X
XG 24 A 24 X N 48 B 48 X S 120 125 C120 125 X W 240 250 D240 250 X 2 XH 24 X P 48 X T120 125 X Y240 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 provisionsOPEN position (lock OPEN position (lock OPEN and CLOSE for charging
type – KIRK)
None X
XAXCXEXFXXGX X J X X S X X U X X V X X X W X X X Z
Ratings – 3200:5 WLG3200NMCT23 Ratings – 4000:5WLG4000NMCT23 Ratings – 5000:5WLG5000NMCT23 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 BreakerWLCT2 Frame Size 3 BreakerWLCT3 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.
52WL Circuit Breaker Selection and Application Guide
N 50 50 800 X N 2 3 0 8N 50 50 1600 X N 2 3 1 6S 65 65 800 X S 2 3 0 8S 65 65 1600 X S 2 3 1 6S 65 65 2000 X S 2 3 2 0S 65 65 3200 X S 2 3 3 2H 85 65 800 X H 2 3 0 8H 85 65 1600 X H 2 3 1 6H 85 65 2000 X H 2 3 2 0H 85 65 3200 X H 2 3 3 2H 85 85 4000 X H 3 3 4 0H 85 85 5000 X H 3 3 5 0L 100 85 800 X L 2 3 0 8L 100 85 1600 X L 2 3 1 6L 100 85 2000 X L 2 3 2 0L 100 85 3200 X L 2 3 3 2L 100 85 4000 X L 3 3 4 0L 100 85 5000 X L 3 3 5 0M 150 85 3200 X M 3 3 3 2M 150 85 4000 X M 3 3 4 0M 150 85 5000 X M 3 3 5 0F 200 200 800 X F 2 3 0 8F 200 200 1600 X F 2 3 1 6F 200 200 2000 X F 2 3 2 0F 200 200 3200 X F 2 3 3 2 F 200 200 4000 X F 3 3 4 0F 200 200 5000 X F 3 3 5 0
G 2 3 4 5 6 7 8 9 101112131415
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 XLock breaker in OPEN position (Kirk key) ALock breaker in OPEN position (Superior key) BDouble lock breaker in OPEN position (Kirk key) CDouble lock breaker in OPEN position (Superior key) DProvision only - Lock breaker in OPEN position EProvision 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 akey-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 1112 1314 15 15
Arc chute covers
None XArc 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 XMXAXCXXDX X X E XXGX 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 HRotatable rear connectors
Rotatable rear connectors and a cradle heater (FS2, 2000A and below, N, S, & H Class) K Future use
54WL Circuit Breaker Selection and Application Guide
Page 57
WL Breaker
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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 TOTHE 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
56WL 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
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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.
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
Courtesy of NationalSwitchgear.com
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 IMeasuring 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 ICharacteristic Curve
All versions of the ground fault modules are delivered with an Ior fixed delay.
Modules are available in eitherAlarm 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 745-748Ground fault module GFM AT 745-748
Ground fault module GFM A 776Ground fault module GFM AT 776
58WL 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 equippedwith 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 secondaryvoltages.
The following ratios are suggested or equivalent VTs canbe 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 powerfactor) load to the transformer. Assuming no other devicesconnected to the VT, a ITI type 486 VT can safely feed 10metering modules and and still maintain 0.6% accuracyassuming the wiring from the VT to the individual meteringmodules 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
Page 62
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame size 1
60WL Circuit Breaker Selection and Application Guide
Page 63
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame size 1Horizontal Connectors
Top view
Bottom view
61WL Circuit Breaker Selection and Application Guide
Page 64
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame Size 1Rear Vertical Connectors
Top view
Rear view
62WL Circuit Breaker Selection and Application Guide
Page 65
Low Voltage Circuit Breaker
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UL489 Fixed-mount Breaker Dimensions
Frame Size 1Front 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 1Front Connectors and Lugs
Top view
Front view
64WL Circuit Breaker Selection and Application Guide
Page 67
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Fixed Size 1Door Cut-outs
65WL Circuit Breaker Selection and Application Guide
Page 68
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame Size 2
Interrupting classDimension BDimension CDimension D
S/L
C
66WL 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
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame Size 2Optional Vertical Connectors
Interrupting ClassRated CurrentDimension A
S/Lmax. 1600 A0.39 [10]
S/Lmax. 2000 A0.59 [15]
S/Lmax. 3000 A1.18 [30]
C1600 - 3000 A1.18 [30]
67WL Circuit Breaker Selection and Application Guide
Page 70
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame Size 2Optional Vertical Connectors
Top view
Rated CurrentDimension A
max. 1600 A0.39 [10]
max. 2000 A0.59 [15]
max. 3000 A1.18 [30]
C-class always1.18 [30]
Rear view
68WL Circuit Breaker Selection and Application Guide
Page 71
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame Size 2Front Connectors
LH side view
Front view
Rated CurrentDimension A
max. 1600 A0.39 [10]
max. 2000 A0.79 [20]
max. 2500 A0.79 [20]
69WL Circuit Breaker Selection and Application Guide
Page 72
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame Size 23000A Front Connectors
70WL Circuit Breaker Selection and Application Guide
Page 73
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
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 3Vertical Connectors and Horizontal Stabs
Top view
Top view
72WL Circuit Breaker Selection and Application Guide
Page 75
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
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 35000A Vertical Connectors
LH side view
Front view
74WL Circuit Breaker Selection and Application Guide
Page 77
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL489 Fixed-mount Breaker Dimensions
Frame Size 2 and 3Door 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
Page 78
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
76WL Circuit Breaker Selection and Application Guide
Page 79
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1Vertical Connectors
Rear view
Top view
77WL Circuit Breaker Selection and Application Guide
Page 80
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1
Bottom view
78WL Circuit Breaker Selection and Application Guide
Page 81
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1Charging and Racking
79WL Circuit Breaker Selection and Application Guide
Page 82
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1Plexiglass Cover
80WL Circuit Breaker Selection and Application Guide
Page 83
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 1Door 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
82WL Circuit Breaker Selection and Application Guide
Page 85
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
Page 86
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 2Vertical Connectors and Optional Horizontal Connectors
Horizontal MainBus Connectors
Vertical MainBus Connectors
Horizontal MainBus 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 MainBus Connectors
84WL Circuit Breaker Selection and Application Guide
Page 87
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 2Charging, Racking and Draw-out
85WL Circuit Breaker Selection and Application Guide
Page 88
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 3
86WL Circuit Breaker Selection and Application Guide
Page 89
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 3Vertical 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 3Charging, Racking and Draw-out
88WL Circuit Breaker Selection and Application Guide
Page 91
Low Voltage Circuit Breaker
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UL489 Draw-out Breaker Dimensions
Frame Size 2 and 3Door 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
Page 92
Low Voltage Circuit Breaker
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UL489 Door Sealing Frame Dimensions
Frame Size 2 and 3Door 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.
90WL Circuit Breaker Selection and Application Guide
Page 93
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
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
92WL Circuit Breaker Selection and Application Guide
Page 95
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Draw-out Non-fused Breaker Dimensions
Frame Size 2
Horizontal MainBus Connectors
Horizontal MainBus Connectors
Vertical MainBus Connectors
Vertical MainBus 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
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Draw-out Non-fused Breaker Dimensions
Frame Size 2Charging, Racking and Draw-out
94WL Circuit Breaker Selection and Application Guide
Page 97
Low Voltage Circuit Breaker
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UL 1066 Draw-out Fused Breaker Dimensions
Frame Size 2
95WL Circuit Breaker Selection and Application Guide
Page 98
Low Voltage Circuit Breaker
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UL 1066 Draw-out Fused Breaker Dimensions
Frame Size 2
13.35[339.2]
Topventilationarea(mustremainunobstructed)
5.25[133.4]
5.25[133.4]
0.25[6.4]
CL
Ø0.53Ø[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]
96WL Circuit Breaker Selection and Application Guide
Page 99
Low Voltage Circuit Breaker
Courtesy of NationalSwitchgear.com
UL 1066 Draw-out Fused Breaker Dimensions
Frame Size 2Charging, Racking and Draw-out
97WL Circuit Breaker Selection and Application Guide
Page 100
Low Voltage Circuit Breaker
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UL 1066 Draw-out Breaker Dimensions
Frame Size 2Door Cut-outs
R0.39[R10.0]
(Max.radii,4plc's)
13.38[339.9]
2.74[69.5]
Door cut-out and mounting holes for Door Sealing Frame
R0.08
(Max.radii,4plcs)
[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,4plcs)
[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.
98WL Circuit Breaker Selection and Application Guide
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