Omega Products WMS1B07SP User Manual
SUPPLEMENTARY
PROTECTORS
WMS Series
l 1, 2, 3 Pole Models
l 1 to 30 Amp Ranges
l 3 Different Trip Curves to
Choose From
l CSA 22.2
WMS1C20SP
WMS3C20SP
WMS2C20SP
All models shown
smaller than actual size.
Offering maximum reliability and accuracy,
the supplementary protectors fit various
applications where a fuse may have been
previously used. The advantage over fuses is
that it is resettable and the device’s status is
easily and clearly identified by the position of
the handle and the flag indicator. With easy
mounting of the device on a 35 mm (1.38")
DIN rail it is now easier for the customer to
select and apply this modular range, due
to the smaller modular width of the device
and accessories. The WMS supplementary
protector is a dual-rated product for both
AC and DC supplies, in accordance with
UL 1077, CSA 22.2 and IEC 898 standards
and is marked with CE in accordance with
the Low Voltage Directive. With this dual
standard product, you can include it within
your design, knowing that, in the vast
majority of cases wherever the equipment
is used, the product is in line with the local
UL, CSA or IEC (European) requirements.
This is very important as the different
areas of the world market draw closer
together and the need for breakers that meet
different standards is a common, everyday
occurrence. It is to be applied in conjunction
with a branch protector (if branch protection
is required) and can be a replacement for
similarly applied fuses. In addition to this,
you are able to select a device that provides
maximum reliability and accuracy to fit their
various applications (of which there are
many) due to the availability of a wide range
of current ratings from 0.5 to 60 amperes
and three different overcurrent characteristic
curves. With easy mounting of the device on
a 35 mm (1.38") DIN-rail and also the “Quick
3 Step” field mountable accessories, it is
now easier to select and apply this modular
range. In addition, utilizing the bus bar comb
to connect multiple devices from a single
power source, saves time as multiple wire
connections are no longer required. Due to
the smaller modular width of the device and
accessories, it enables them to save space
in their panel or equipment—which directly
leads to cost savings!
IEC RATING
AMPERE
RATING CURVE VOLTS AC IEC 898, I
0.5 to 5 C, D 240/415 10,000 10,000
50 to 60 B, C, D 240/415 10,000 10,000
SHORT CIRCUIT CAPACITY
IEC 947-2, I
CN
UL/CSA RATING
AMPERE NUMBER
RATING OF POLES CURVE VOLTS AC UL 1077 CSA 235
6 to 60 1 B 120 10,000 10,000
0.5 to 60 1 C, D 120 10,000 10,000
6 to 60 2, 3, 4 B 240 10,000 10,000
0.5 to 60 2, 3, 4 C, D 240 10,000 10,000
6 to 60 1 B 277 6000 6000
0.5 to 60 1 C, D 277 6000 6000
6 to 60 2, 3, 4 B 480 5000 5000
0.5 to 60 2, 3, 4 C, D 480 5000 5000
SHORT CIRCUIT CAPACITY (A)
CU
1
DC RATING
75°
(0.43)
11
7
(0.28)
15
(0.59)
62
(2.44)
44
(1.73)
85
(3.48)
45
(1.77)
18
(0.71)
7
7
(0.28)
15
(0.59)
68
(2.68)
54
(2.13)
31
(1.22)
44
(1.73)
4
(0.16)
75°
7
(0.43)
11
7
(0.28)
15
(0.59)
62
(2.44)
44
(1.73)
85
(3.48)
45
(1.77)
18
(0.71)
7
(0.28)
7
(0.28)
15
(0.59)
68
(2.68)
54
(2.13)
31
(1.22)
44
(1.73)
4
(0.16)
54
(2.13)
75°
7
(0.43)
11
7
(0.28)
15
(0.59)
62
(2.44)
44
(1.73)
85
(3.48)
45
(1.77)
18
(0.71)
7
(0.28)
7
(0.28)
15
(0.59)
68
(2.68)
54
(2.13)
31
(1.22)
44
(1.73)
4
(0.16)
36
(1.42)
54
(2.13)
75°
7
11
7
(0.28)
15
(0.59)
62
(2.44)
44
(1.73)
85
(3.48)
45
(1.77)
18
(0.71)
7
(0.28)
7
(0.28)
15
(0.59)
68
(2.68)
54
(2.13)
31
(1.22)
44
(1.73)
4
(0.16)
35
(1.38)
35
(1.38)
9
(0.35)
9
(0.35)
35
(1.38)
35
(1.38)
9
(0.35)
9
(0.35)
AMPERE NUMBER
RATING OF POLES CURVE VOLTS DC UL 1077 CSA 235
0.5 to 63 1 B, C, D 65 10,000 10,000
0.5 to 63 2 B, C, D 130 10,000 10,000
SHORT CIRCUIT CAPACITY (A)
CABLE SIZE AND TORQUE SETTING - WMS SERIES
AMPERE
RATING mm2 AWG Nm lb/in
0.5 to 60 1 to 25 14 to 6 2.8 24.8
CABLE SIZE TIGHTENING TORQUE
Dimensions: mm (inch)
18
(0.71)
Standards and Certifications
UL recognized under UL 1077
l
lCSA 22.2
lIEC 898
lIEC 60947-2
Product Description
Dual standard breaker: recognized by
l
UL and CSA under UL 1077 and CSA 22.2
lThird-party approved by KEMA
according to IEC 898
lCE marked in accordance with Low
Voltage Directive (LVD) (73/23/EEC)
lUsed to provide overcurrent protection
where branch protection
(for example UL 489 MCCB) is already
provided or not required
lInstalled as a component within or part
of an appliance or a piece of electrical
equipment
lIdeal replacement for fuses that are
applied as a supplementary protector,
i.e., in addition to branch protection
(if required)
l 35 mm (1.38") DIN-rail mountable,
utilizing metallic “extra strength”
spring clip
2
36
(1.42)
54
(2.13)
lLight gray case with gray handle, that is
marked “O” for OFF and “I” for ON
lUL file number E162396
lCSA file number LR105508-2
Application Description
Cutler-Hammer supplementary protectors
are ideal for providing protection in a
multitude of applications, including:
lMotor control circuits
lControl power transformers
lRelays
lContactor coils
lPLC I/O points
lLighting circuits
Features, Benefits and Functions
Current limiting design provides fast
l
short circuit interruption that reduces
the let-through energy which can
damage the circuit.
lThermal-magnetic overcurrent protection:
Three levels, categorized by B, C and D
curves in direct relation to continuous
rating of device
–B Curve—3 to 5X: Suited for applications
where maximum protection is required for
control circuits from low level short circuit
faults that could damage the wiring.
45
(1.77)
–C Curve—5 to 10X: Is positioned for
medium inrush startup currents, to provide
protection for small transformers, pilot
devices, etc.
–D Curve—10 to 20X: Provides a magnetic
range to allow for higher inrush levels during
startup, that are usually seen with motors,
transformers and other high inductive
systems.
lColor-coded status indicator
window—Red = ON or Green = OFF
lIP20 finger protection.
lProvision for dual connection—
line and load:
–Fork or pin bus bars
–Cable direct into terminal
–Cable utilizing ring tung connector
l 35 mm (1.38”) DIN-rail mountable,
utilizing “extra strength” spring clip
Field-Mountable Accessories
Quick 3-step process
l
lNo tools required
lAuxiliary switch
lCombined auxiliary switch and bell alarm
lShunt trip
62
(2.44)
(1.73)
44
85
(3.48)
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