9
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit Breakers
PRODUCT OVERVIEW
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
Optimum and Efficient Protection
Optimum product quality, tested reliability and safety standards for best protection of personnel, installations and plant . Eaton’s WMZ DIN rail mountable circuit breaker is designed for use in branch service applications .
Powerful Offering for Machine and System Builders
The WMZ is available with C and D characteristics in accordance with UL 489, CSA C22 .2 No .5; UL 1077, CSA C22 .2 No .235 and IEC 60947-2 . These devices are CE marked .
Typical Applications
Feeder and Branch Circuit Protection
• Convenience receptacle circuits (internal/external)
• Motor control circuits
• Load circuits leaving the equipment (external)
• HACR equipment (heating, air conditioning, refrigeration) (internal/external)
• PLC I/O points
• Computers
• Power supplies
• Control instrumentation
• Relays
• UPS
• Power conditioners
Features
• Complete range of UL 489 listed DIN rail mounted miniature circuit breakers up to 40A current rating
• Standard ratings of 10 kAIC at 277/480 Vac
• Select amperages available at 14 kAIC at 277/480 Vac and 10 kAIC at 125 Vdc
• Current limiting design provides fast short-circuit interruption that reduces the let-through energy, which can damage the circuit
• Suitable for branch circuit device protection
• Thermal-magnetic overcurrent protection
— Two levels of short-circuit protection, categorized by C and D curves
• Trip-free design—breaker can not be defeated by holding the handle in the ON position
• Captive screws cannot be lost
• SWD (switching duty)—suitable for switching fluorescent lighting loads (In ≤ 20A)
• Fulfill UL 489, CSA C22 .2 No .5 and also IEC 60947-2 Standard
• For use in applications for which UL 1077 or CSA C22 .2 No .235 are also allowed
• Field-installable shunt trip and auxiliary switch subsequent mounting
• Separate version for ring-tongue connection (Type WMZT… .T), terminal screws can be removed (on both sides)
• Module width of only 17 .7 mm (per pole)
• Contact Position Indicator (red/green)
• Easy installation on DIN rail
• Possibility for sealing the toggle in ON or OFF position
WMZ Complies with the Latest National and International Standards
Standards—Feeder and Branch Circuit Protection
UL 489
Standard for molded-case circuit breakers (MCCB) for feeder and branch circuit protection.
Products meet the requirements of the National Electrical Code® (NEC®).
CSA C22.2 No.5
Standard for molded-case circuit breakers (MCCB) for feeder and branch circuit protection (corresponds closely to UL 489 Standard).
Products meet the requirements of the Canadian Electrical Code (CEC).
RoHS
These devices are RoHS compliant.
WMZ Circuit BreakersProduct Overview
10
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit BreakersPRODUCT SELECTION
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
Tripping Curves to Choose From
Eaton WMZ branch circuit breakers are available with “C” and “D” tripping characteristics .
C-curve devices are suitable for applications where medium levels of inrush current are expected . Applications include small transformers, lighting, pilot devices, control circuits and coils . C-curve devices provide a medium magnetic trip point .
D-curve devices are suitable for applications where high levels of inrush current are expected . The high magnetic trip point prevents nuisance tripping in high inductive applications such as motors, transformers and power supplies .
Eaton WMZ devices are current limiting, which means they interrupt fault currents within one half cycle of the fault . Current limiting devices offer superior protection by reducing peak let-through current and energy .
Catalog Numbering System
Device Printing on Front and Side
Installation options
These branch circuit breakers are available in two terminal configurations: standard box terminals that accept multiple conductors and ring-tongue terminals, ideally suited to demanding requirements of the semi-conductor industry . All breakers mount on standard 35 mm DIN rail . Bus connectors and feeder terminal facilitate mounting and wiring of multiple miniature circuit breaker arrays in control panel assemblies . These circuit breakers can also be reverse feed .
tripping characteristic acc . to UL 489 conventional non-tripping
current Int = 1.0 IN (T=40°)
conventional tripping current It = 1.35 IN: t < 1 h (T=25°)
2.0 IN: t = 12–120 s (T=25°)
instantaneous tripping acc . to IEC 60898-1 type C: 5 IN: t > 0.1 s
10 IN: t < 0.1 se type D: 10 IN: t > 0.1 s
20 IN: t < 0.1 s
Conductor Type
Calibration Temperature UL/CSA
Rated Voltage UL/CSA
Breaker Status Indicator
Catalog Number
Rated Current
WMZ T 1 C 16 T
Breaker Family
WMZ = WMZ UL circuit breaker Number of Poles
1 = Single-pole2 = Two-pole3 = Three-pole
Terminal
T = Ring terminals[blank] = Standard box terminals
Breaker Type
T = 10 kAICH = 14 kAIC D = 10 kAIC/DC
Protective Curve
C = C Curve (5–10X In)D = D Curve (10–20X In)
Ampere Rating
X0 = 0.5A01 = 1AX1 = 1.5A02 = 2A03 = 3A04 = 4A05 = 5A06 = 6A07 = 7A08 = 8A
10 = 10A13 = 13A15 = 15A16 = 16A20 = 20A25 = 25A30 = 30A32 = 32A40 = 40A
Limited curve and ampere offerings. 125 Vdc for single-pole, 250 Vdc for two-pole in series. Not offered for Type WMZD.
WMZ Circuit BreakersProduct Selection
11
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit Breakers
PRODUCT SELECTION
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
WMZT Product Selection
• UL approved (UL 489) and CSA Certified (CSA C22 .2 No . 5-02) as branch circuit breakers
• Interrupting capacity: 10 kA UL/CSA; 15 kA IEC 60947
• Current limiting device
• Optional connections for ring-tongue terminals
WMZT UL 489 Circuit Breakers—10 kAIC
AmperesSingle-Pole Catalog Number
Two-Pole Catalog Number
Three-Pole Catalog Number
C Curve (5–10X In Current Rating)
0.511.523
WMZT1CX0WMZT1C01WMZT1CX1WMZT1C02WMZT1C03
WMZT2CX0WMZT2C01WMZT2CX1WMZT2C02WMZT2C03
WMZT3CX0WMZT3C01WMZT3CX1WMZT3C02WMZT3C03
45678
WMZT1C04WMZT1C05WMZT1C06WMZT1C07WMZT1C08
WMZT2C00WMZT2C05WMZT2C06WMZT2C07WMZT2C08
WMZT3C04WMZT3C05WMZT3C06WMZT3C07WMZT3C08
1013151620
WMZT1C10WMZT1C13WMZT1C15WMZT1C16WMZT1C20
WMZT2C10WMZT2C13WMZT2C15WMZT2C16WMZT2C20
WMZT3C10WMZT3C13WMZT3C15WMZT3C16WMZT3C20
25303240
WMZT1C25WMZT1C30WMZT1C32WMZT1C40
WMZT2C25WMZT2C30WMZT2C32WMZT2C40
WMZT3C25WMZT3C30WMZT3C32WMZT3C40
D Curve (10–20X In Current Rating)
0.511.523
WMZT1DX0WMZT1D01WMZT1DX1WMZT1D02WMZT1D03
WMZT2DX0WMZT2D01WMZT2DX1WMZT2D02WMZT2D03
WMZT3DX0WMZT3D01WMZT3DX1WMZT3D02WMZT3D03
45678
WMZT1D04WMZT1D05WMZT1D06WMZT1D07WMZT1D08
WMZT2D04WMZT2D05WMZT2D06WMZT2D07WMZT2D08
WMZT3D04WMZT3D05WMZT3D06WMZT3D07WMZT3D08
1013151620
WMZT1D10WMZT1D13WMZT1D15WMZT1D16WMZT1D20
WMZT2D10WMZT2D13WMZT2D15WMZT2D16WMZT2D20
WMZT3D10WMZT3D13WMZT3D15WMZT3D16WMZT3D20
25303240
WMZT1D25WMZT1D30WMZT1D32WMZT1D40
WMZT2D25WMZT2D30WMZT2D32WMZT2D40
WMZT3D25WMZT3D30WMZT3D32WMZT3D40z
WMZT UL 489 Circuit Breakers with Ring-Tongue Terminals—10 kAIC
AmperesSingle-Pole Catalog Number
Two-Pole Catalog Number
Three-Pole Catalog Number
C Curve with Ring-Tongue Terminals (5–10X In Current Rating)
0.511.523
WMZT1CX0TWMZT1C01TWMZT1CX1TWMZT1C02TWMZT1C03T
WMZT2CX0TWMZT2C01TWMZT2CX1TWMZT2C02TWMZT2C03T
WMZT3CX0TWMZT3C01TWMZT3CX1TWMZT3C02TWMZT3C03T
45678
WMZT1C04TWMZT1C05TWMZT1C06TWMZT1C07TWMZT1C08T
WMZT2C04TWMZT2C05TWMZT2C06TWMZT2C07TWMZT2C08T
WMZT3C04TWMZT3C05TWMZT3C06TWMZT3C07TWMZT3C08T
1013151620
WMZT1C10TWMZT1C13TWMZT1C15TWMZT1C16TWMZT1C20T
WMZT2C10TWMZT2C13TWMZT2C15TWMZT2C16TWMZT2C20T
WMZT3C10TWMZT3C13TWMZT3C15TWMZT3C16TWMZT3C20T
25303240
WMZT1C25TWMZT1C30TWMZT1C32TWMZT1C40T
WMZT2C25TWMZT2C30TWMZT2C32TWMZT2C40T
WMZT3C25TWMZT3C30TWMZT3C32TWMZT3C40T
D Curve with Ring-Tongue Terminals (10–20X In Current Rating)
0.511.523
WMZT1DX0TWMZT1D01TWMZT1DX1TWMZT1D02TWMZT1D03T
WMZT2DX0TWMZT2D01TWMZT2DX1TWMZT2D02TWMZT2D03T
WMZT3DX0TWMZT3D01TWMZT3DX1TWMZT3D02TWMZT3D03T
45678
WMZT1D04TWMZT1D05TWMZT1D06TWMZT1D07TWMZT1D08T
WMZT2D04TWMZT2D05TWMZT2D06TWMZT2D07TWMZT2D08T
WMZT3D04TWMZT3D05TWMZT3D06TWMZT3D07TWMZT3D08T
1013151620
WMZT1D10TWMZT1D13TWMZT1D15TWMZT1D16TWMZT1D20T
WMZT2D10TWMZT2D13TWMZT2D15TWMZT2D16TWMZT2D20T
WMZT3D10TWMZT3D13TWMZT3D15TWMZT3D16TWMZT3D20T
25303240
WMZT1D25TWMZT1D30TWMZT1D32TWMZT1D40T
WMZT2D25TWMZT2D30TWMZT2D32TWMZT2D40T
WMZT3D25TWMZT3D30TWMZT3D32TWMZT3D40T
For our complete product offering, see the Distribution Products Catalog (CA08101001E) .
Product Selection
12
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit BreakersPRODUCT SELECTION
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
WMZH Product Selection
• UL approved (UL 489) and CSA Certified (CSA C22 .2 No . 5-02) as branch circuit breakers
• Interrupting capacity: 14 kA UL/CSA; 15 kA IEC 60947
WMZH UL 489 Circuit Breakers—14 kAIC
AmperesSingle-Pole Catalog Number
Two-Pole Catalog Number
Three-Pole Catalog Number
C Curve (5–10X In Current Rating)
15162025
WMZH1C15WMZH1C16WMZH1C20WMZH1C25
WMZH2C15WMZH2C16WMZH2C20WMZH2C25
WMZH3C15WMZH3C16WMZH3C20WMZH3C25
D Curve (10–20X In Current Rating)
13151620
WMZH1D13WMZH1D15WMZH1D16WMZH1D20
WMZH2D13WMZH2D15WMZH2D16WMZH2D20
WMZH3D13WMZH3D15WMZH3D16WMZH3D20
WMZD Product Selection
• UL approved (UL 489) and CSA Certified (CSA C22 .2 No . 5-02) as branch circuit breakers
• Interrupting capacity: 10 kA at 125 Vdc UL/CSA
• 125 Vdc for single-pole, 250 Vdc for two-pole in series
• Current limiting device
• Current limiting device
• Optional connections for ring-tongue terminals
WMZH UL 489 Circuit Breakers with Ring-Tongue Terminals
AmperesSingle-Pole Catalog Number
Two-Pole Catalog Number
Three-Pole Catalog Number
C Curve (5–10X In Current Rating)
15162025
WMZH1C15TWMZH1C16TWMZH1C20TWMZH1C25T
WMZH2C15TWMZH2C16TWMZH2C20TWMZH2C25T
WMZH3C15TWMZH3C16TWMZH3C20TWMZH3C25T
D Curve (10–20X In Current Rating)
13151620
WMZH1D13TWMZH1D15TWMZH1D16TWMZH1D20T
WMZH2D13TWMZH2D15TWMZH2D16TWMZH2D20T
WMZH3D13TWMZH3D15TWMZH3D16TWMZH3D20T
WMZD UL 489 Circuit Breakers— 10 kAIC at 125 Vdc per pole
AmperesSingle-Pole Catalog Number
Two-Pole Catalog Number
C Curve (5–10X In Current Rating)
2345
WMZD1C02WMZD1C03WMZD1C04WMZD1C05
WMZD2C02WMZD2C03WMZD2C04WMZD2C05
67810
WMZD1C06WMZD1C07WMZD1C08WMZD1C10
WMZD2C06WMZD2C07WMZD2C08WMZD2C10
13151620
WMZD1C13WMZD1C15WMZD1C16WMZD1C20
WMZD2C13WMZD2C15WMZD2C16WMZD2C20
25303240
WMZD1C25WMZD1C30WMZD1C32WMZD1C40
WMZD2C25WMZD2C30WMZD2C32WMZD2C40
13
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit Breakers
PRODUCT SELECTION
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
WMZ UL 489 BreakersAccessory/Description Catalog Number
Two-pole contact or auxiliary contact/ Trip indicating contact
WMZSAUXTRIP
Auxiliary contact WMZTAUX
Shunt trip 110–415 VacShunt trip 12–110 Vac
WMZTST415WMZTST110
Padlock hasp WMZPLK
Busbar—single-pole 6 terminalsBusbar—single-pole 12 terminalsBusbar—single-pole 18 terminalsBusbar—two-pole 6 terminalsBusbar—two-pole 12 terminalsBusbar—two-pole 18 terminalsBusbar—three-pole 6 terminalsBusbar—three-pole 12 terminalsBusbar—three-pole 18 terminals
WMZT1P6TWMZT1P12TWMZT1P18TWMZT2P6TWMZT2P12TWMZT2P18TWMZT3P6TWMZT3P12TWMZT3P18T
Three-pole busbar shroud WMZT3PSHROUD
Extension terminal—35 mm (2–14 AWG) WMZT35EXT
Bus connector—conductors up to 50 mm2 (~1/0 AWG) WMZTBCON
Contact sales office for availability.
Tripping Signal Switch WMZSAUXTRIP, WMZTAUX
• Design according to IEC/EN 60947-5-1, IEC/EN 62019
• Field installable
• The specified minimum voltages are per contact—take into account particularly in case of series connection
• Self-cleaning contacts
• Contact material and design particularly suitable for extra low voltage
• WMZSAUXTRIP: the function of one of the two change-over contacts can be switched from “auxiliary switch” to “tripping signal switch”
• Tripping signal contact transmits message of electric tripping, not mechanical switch-off
• Test key for contact function “electrical tripping”
• WMZTAUX: will allow for > 480Y/277 Vac rating
Connection Diagram
WMZSAUXTRIP
21
4.11
1.11
1.14
1.12
4.12/4.14
4.14/4.12
13
2214
Same Polarity
WMZTAUX
4.13(105.0)
Single-Pole Two-Pole Three-Pole
.70(17.7)
.70(17.7)1.39
(35.3)2.09
(53.1)
.70(17.7)
.70(17.7)
4.13(105.0)
4.13(105.0)
1.17(29.7)39°
1.42(36.1)
—
Dimensions
Miniature Circuit Breakers
WMZ
14
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit BreakersTECHNICAL DATA
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
Miniature Circuit Breakers WMZ
Connection Diagrams
Miniature Circuit Breakers WMZDescription Specification
Electrical
Design according to UL 489, CSA C22.2 No.5, IEC 60947-2
Rated voltage WMZT UL/CSA UL/CSA UL/CSA IEC 947-2
10 kAIC at 277/480V from 0.5A to 32A10 kAIC at 240 Vac for 40A10 kAIC at 48 Vdc per pole15 kAIC at 240/415 Vac
Rated voltage WMZD UL/CSA 10 kAIC at 125 Vdc per pole
(two poles maximum)10 kAIC at 250 Vdc with two poles connected in series
Rated voltage WMZH UL/CSA IEC 947-2
14 kAIC at 277/480V at listed amperages15 kAIC at 240/415 Vac
Rated frequency 50/60 Hz
Rated breaking capacity WMZT UL/CSA IEC 947-2
10 kA15 kA
Rated breaking capacity WMZH UL/CSA IEC 947-2
14 kA15 kA
Characteristic C, D
Endurance ≥ 20,000 operations
Line voltage connection Suitable for reverse feed
Mechanical
Frame size 45 mm
Device height 105 mm
Device width 17.7 mm per pole
Mounting Quick fastening with two lock-in positions on IEC/EN 60715
Upper and lower terminals Open mouth/lift terminals
Terminal capacity Single-wire Two-wire
AWG 18–6AWG 18–10
Terminal fastening torque AWG 18-21: 21 lb-inAWG 10-8: 25 lb-inAWG 6: 36 lb-in
Mounting Independent of position
Calibration temperatureUL 489, CSA C22.2 No.5IEC 60947-2
40°C30°C
Two-Pole Three-PoleSingle-Pole
Dimensions (mm)
Power Loss at ln Characteristic C Characteristic D
In [A]
Single-Pole
Two- Pole
Three-Pole
Single-Pole
Two- Pole
Three-Pole
P [W] P [W] P [W] P [W] P [W] P [W
0.511.52
1.61.11.31.4
3.22.22.62.8
4.73.43.94.3
1.60.81.01.0
3.21.52.12.1
4.82.33.13.1
3456
1.21.41.91.2
2.42.93.72.3
3.64.35.63.5
1.21.41.51.2
2.42.92.92.3
3.64.34.43.5
781013
1.41.41.82.4
2.82.83.64.7
4.34.25.37.1
1.41.21.52.0
2.82.43.04.1
4.33.74.56.1
15162025
1.92.12.93.1
3.84.35.86.2
5.66.48.79.3
1.51.71.82.6
3.13.53.75.1
4.65.25.57.7
30323540
3.03.43.74.0
6.06.87.48.1
9.010.211.012.1
2.73.13.83.9
5.46.27.67.8
8.19.311.311.6
17 .7
105
5 .5
45
10
44
60
Technical Data
15
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit Breakers
TECHNICAL DATA
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
Let-Through Energy
Characteristic C (0.5–32A), 277V
Characteristic D (0.5–32A), 277V
Characteristic C (40A), 240V
Characteristic D (40A), 240V
16
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit BreakersACCESSORIES
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
Dimensions (mm)
WMZT_ _ 6T WMZT_ _ 12T
WMZT_ _ 18T WMZT35EXT
WMZT3PSHROUD
517,6
5x17,6=88
517,6
17x17,6=299,2
5
717,6 17,6 3,55
17,611x17,6=193,6
310,2
204,6
24
1616
48.2
15,5
46
32,5
71,6
6
13,5
3
31,3
99
WMZT35EXTDescription UL 489 IEC/EN 60947-2
# 2–14 AWG60/75°C Cu
2.5–35 mm2
60/75°C Cu
0.56 in 14 mm
Tested according to Tightening torque of terminal screws
UL 486A # 14 AWG ≥ 2.3 Nm
UL 486B # 8–12 AWG ≥ 2.8 Nm
UL 486E # 6–1 AWG 4 Nm
Lockout Attachment
WMZPLK
Accessories
17
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit Breakers
TECHNICAL DATA
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
Influence of Ambient Temperature T on Load Carrying Capacity
Device Market Current Rating In (A) at 40°C
In (A) at Higher Ambient Temperature
15°C 20°C 25°C 30°C 40°C 50°C 55°C 60°C
0.51.01.52.0
0.61.11.72.2
0.51.11.62.2
0.51.11.62.1
0.51.01.62.1
0.51.01.52.0
0.51.01.41.9
0.50.91.41.9
0.5 0.9 1.4 1.8
3.04.05.06.0
3.34.45.56.6
3.24.35.46.5
3.24.25.36.4
3.14.25.26.2
3.04.05.06.0
2.93.84.85.8
2.93.84.75.6
2.8 3.7 4.6 5.5
7.08.010.013.0
7.78.811.014.3
7.68.610.814.0
7.48.510.613.8
7.38.310.413.5
7.08.010.013.0
6.77.79.612.5
6.67.59.412.5
6.4 7.4 9.2 12.0
15.016.020.025.0
16.517.622.027.5
16.217.321.627.0
15.917.021.226.5
15.616.620.826.0
15.016.020.025.0
14.415.419.224.0
14.115.018.823.3
13.8 14.7 18.4 23.0
30.032.040.0
33.035.244.0
32.434.643.2
31.833.942.4
31.233.341.6
30.032.040.0
28.830.738.4
28.230.137.6
27.6 29.4 36.8
Ambient Temperature T [°C]Maximum Load IL at ambient temperature T: IL (T) = IN KT(T)
Load
Fac
tor
KT
[I/
I N]
Technical Data
18
UL 489 Cable-In / Cable-Out Branch Circuit BreakerWMZ Circuit BreakersACCESSORIES
EATON CORPORATION Cable-in / cable-out circuit breakers and protectors
AccessoriesDescription WMZSAUXTRIP WMZTAUX
Electrical
Contact function 2CO 1NO + 1NC
Rated voltage 230V 250V
Frequency 50/60 Hz 50/60 Hz
Rated current 2A 6A
Rated thermal current Ith 2A 6A
Utilization category AC13rated operational current Ie 3A/250 Vac 3A/250 Vac
Utilization category AC15rated operational current Ie 2A/250 Vac 2A/250 Vac
Utilization category DC12rated operational current Ie 0.5A/110 Vdc 0.5A/110 Vdc
0.25A/220 Vdc
Rated insulation voltage UI 250 Vac 250 Vac
Minimum operational voltage per contact Umin 5 Vdc 5 Vdc
Minimum operational current Imin 10 mA DC 10 mA AC/DC
Rated peak withstand voltage Uimp (1.2/50µ) 2.5 kV 4 kV
Conditional short-circuit current Ik with backup fuse 6A 1 kA 1 kA
Max. backup fuse, overload and short circuit 6A gL —
Mechanical
Tripping indicator “electrical tripping” Blue/white —
Frame size 45 mm 45 mm
Device height 80 mm 80 mm
Device width 8.8 mm (0.5MU) 8.8 mm (0.5MU)
Mounting Onto switching device —
Degree of protection, built-in IP40 IP40
Terminal protection Finger and hand touch safe according to BGV A3, ÖVE-EN 6
Finger and hand touch safeaccording to BGV A3, ÖVE-EN 6
Terminals Lift terminals Lift terminals
Terminal capacity 20–14 AWG 0.5–2.5 mm2
Terminal screws M3 (posidrive Z0) M3 (posidrive Z0)
Fastening torque of terminal screws 7 lb-in Max. 1.2 Nm