Cutler Hammer, Div of Eaton Corp WMZT Technical Specifications
Technical Data
UL 489 DIN Rail Miniature Circuit Breakers
WMZT Circuit Breakers
TECHNICAL DATA
Miniature Circuit Breakers WMZT
Connection Diagrams
1-pole
2-pole
3-pole
Miniature Circuit Breaker WMZT
Description
Electrical
Design According to UL 489, CSA C22.2 No.5, IEC 60947-2
Rated Voltage
UL/CSA 0.5 – 25A
UL/CSA 32 – 40A
UL/CSA (per pole)
IEC
Rated Frequency 50/60 Hz
Rated Breaking Capacity
UL/CSA
IEC
Characteristic C, D
Endurance ≥ 20,000 Operations
Line Voltage Connection Optional Suitable for Reverse Feed
277/480Y Vac
240 Vac
48 Vdc
240/415 Vac
10 kA
15 kA
Mechanical
Frame Size 45 mm
Device Height 105 mm
Device Width 17.7 mm per pole
Mounting Quick Fastening with 2 Lock-In Positions on
Technical Data
Upper and Lower Terminals Open Mouth/Lift Terminals
Terminal Capacity 1 Wire
Terminal Fastening Torque AWG 18-21: 21 lb-in
Mounting Independent of Position
Calibration temperature
UL 489, CSA C22.2 No.5
IEC 60947-2
IEC/EN 60715
2 Wires
AWG 10-8: 25 lb-in
AWG 6: 36 lb-in
40°C
30°C
AWG 18 – 6
AWG 18 – 10
Dimensions (mm)
5.5
105
4.7
3.4
3.9
4.3
3.6
4.3
5.6
3.5
4.3
4.2
5.3
7.1
5.6
6.4
8.7
9.3
9.0
10.2
11.0
12.1
44
60
1.6
0.8
1.0
1.0
1.2
1.4
1.5
1.2
1.4
1.2
1.5
2.0
1.5
1.7
1.8
2.6
2.7
3.1
3.8
3.9
17.7
Power loss at l
Characteristic C Characteristic D
In [A]
0.5
1
1.5
2
3
4
5
6
7
8
10
13
15
16
20
25
30
32
35
40
n
1p 2p 3p 1p 2p 3p
P [W] P [W] P [W] P [W] P [W] P [W
1.6
1.1
1.3
1.4
1.2
1.4
1.9
1.2
1.4
1.4
1.8
2.4
1.9
2.1
2.9
3.1
3.0
3.4
3.7
4.0
3.2
2.2
2.6
2.8
2.4
2.9
3.7
2.3
2.8
2.8
3.6
4.7
3.8
4.3
5.8
6.2
6.0
6.8
7.4
8.1
3.2
1.5
2.1
2.1
2.4
2.9
2.9
2.3
2.8
2.4
3.0
4.1
3.1
3.5
3.7
5.1
5.4
6.2
7.6
7.8
45
10
4.8
2.3
3.1
3.1
3.6
4.3
4.4
3.5
4.3
3.7
4.5
6.1
4.6
5.2
5.5
7.7
8.1
9.3
11.3
11.6
10
EATON CORPORATION UL 489 DIN Rail Miniature Circuit Breakers
UL 489 DIN Rail Miniature Circuit Breakers
WMZT Circuit Breakers
TECHNICAL DATA
Lockout Attachment
Device Market
Current Rating
in (A) © 40°C
0.5
1.0
1.5
2.0
3.0
4.0
5.0
6.0
7.0
8.0
10.0
13.0
15.0
16.0
20.0
25.0
30.0
32.0
40.0
I
(A) at Higher Ambient Temperature
n
15°C 20°C 25°C 30°C 40°C 50°C 55°C 60°C
0.6
1.1
1.7
2.2
3.3
4.4
5.5
6.6
7.7
8.8
11.0
14.3
16.5
17.6
22.0
27.5
33.0
35.2
44.0
0.5
1.1
1.6
2.2
3.2
4.3
5.4
6.5
7.6
8.6
10.8
14.0
16.2
17.3
21.6
27.0
32.4
34.6
43.2
0.5
1.1
1.6
2.1
3.2
4.2
5.3
6.4
7.4
8.5
10.6
13.8
15.9
17.0
21.2
26.5
31.8
33.9
42.4
0.5
1.0
1.6
2.1
3.1
4.2
5.2
6.2
7.3
8.3
10.4
13.5
15.6
16.6
20.8
26.0
31.2
33.3
41.6
0.5
1.0
1.5
2.0
3.0
4.0
5.0
6.0
7.0
8.0
10.0
13.0
15.0
16.0
20.0
25.0
30.0
32.0
40.0
0.5
1.0
1.4
1.9
2.9
3.8
4.8
5.8
6.7
7.7
9.6
12.5
14.4
15.4
19.2
24.0
28.8
30.7
38.4
0.5
0.9
1.4
1.9
2.9
3.8
4.7
5.6
6.6
7.5
9.4
12.5
14.1
15.0
18.8
23.3
28.2
30.1
37.6
0.5
0.9
1.4
1.8
2.8
3.7
4.6
5.5
6.4
7.4
9.2
12.0
13.8
14.7
18.4
23.0
27.6
29.4
36.8
Influence of Ambient Temperature T on Load Carrying Capacity
]
N
Technical Data
Load Factor KT [I/I
Ambient Temperature T [°C]
Maximunm Load I
at ambient temperature T: IL (T) = IN KT(T)
L
12
EATON CORPORATION UL 489 DIN Rail Miniature Circuit Breakers
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