Circuit Breakers – Mouser Singapore

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UM (V-EA) Circuit Breakers

Altech UM (V-EA) Circuit Breakers are UL 508-listed manual motor controllers that are suitable as motor disconnects. These DIN-rail-mounted circuit breakers are thermal magnetic and have a width of 17.5mm per pole. The series features a 0.3A to 60A current rating, 277V_AC voltage rating, and 10kA short circuit withstand capacity. Altech UM (V-EA) Circuit Breakers are ideal for use in AC motor starting, AC general use, AC resistance, AC discharge lamp, and AC incandescent lamp applications.

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Part #

Circuit Breakers 20A CRT BRKR ECHAR 277VAC UL508

3E20UM
Altech
1: $133.19
4In Stock

Mfr. Part No.
3E20UM

Mouser Part No
845-3E20UM

Altech

Circuit Breakers 20A CRT BRKR ECHAR 277VAC UL508

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Datasheet

4In Stock

$133.19

$99.22

$96.56

$89.52

View

Min.: 1
Mult.: 1

Circuit Breaker

E-Trip

20 A

277 VAC

80 VDC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 4A MCB CCHAR 3 PL 480Y/277VAC UL508

3C4UM
Altech
1: $136.66
10Expected 22/6/2026

Mfr. Part No.
3C4UM

Mouser Part No
845-3C4UM

Altech

Circuit Breakers 4A MCB CCHAR 3 PL 480Y/277VAC UL508

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Datasheet

10Expected 22/6/2026

$136.66

$114.33

$108.32

$90.27

$84.25

Min.: 1
Mult.: 1

4 A

277 VAC

80 VDC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A MCB CCHAR 1pl 277VAC UL508

1C5UM
Altech
1: $43.85
17Expected 22/5/2026

Mfr. Part No.
1C5UM

Mouser Part No
845-1C5UM

Altech

Circuit Breakers 5A MCB CCHAR 1pl 277VAC UL508

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Datasheet

17Expected 22/5/2026

$43.85

$39.67

$33.07

$32.87

View

Min.: 1
Mult.: 1

Circuit Breaker

C-Trip

5 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A D Characteristic UL 508 1 POLE

1D15UM
Altech
1: $33.07
5Expected 19/6/2026

Mfr. Part No.
1D15UM

Mouser Part No
845-1D15UM

Altech

Circuit Breakers 15A D Characteristic UL 508 1 POLE

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Datasheet

5Expected 19/6/2026

$33.07

$30.05

$28.63

$27.70

View

Min.: 1
Mult.: 1

Circuit Breaker

D-Trip

15 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A D Characteristic UL 508 1 POLE

1D5UM
Altech
1: $33.07
9On Order

Mfr. Part No.
1D5UM

Mouser Part No
845-1D5UM

Altech

Circuit Breakers 5A D Characteristic UL 508 1 POLE

Learn More

Datasheet

9On Order

$33.07

$32.28

$30.05

$28.63

View

Min.: 1
Mult.: 1

Circuit Breaker

D-Trip

5 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 16A MCB DCHAR 1P+N 277VAC UL508

2D16UM
Altech
1: $66.16
25Expected 29/6/2026

Mfr. Part No.
2D16UM

Mouser Part No
845-2D16UM

Altech

Circuit Breakers 16A MCB DCHAR 1P+N 277VAC UL508

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Datasheet

25Expected 29/6/2026

$66.16

$65.16

$59.98

$57.89

View

Min.: 1
Mult.: 1

16 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A MCB DCHAR 1P+N 277VAC UL508

2D20UM
Altech
1: $95.31
32On Order

Mfr. Part No.
2D20UM

Mouser Part No
845-2D20UM

Altech

Circuit Breakers 20A MCB DCHAR 1P+N 277VAC UL508

Learn More

Datasheet

32On Order

$95.31

$79.08

$72.93

$60.37

View

Min.: 1
Mult.: 1

Circuit Breaker

D-Trip

20 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 6A MCB CCHARL 480Y/277VAC UL508

3C6UM
Altech
1: $136.66
1Expected 1/6/2026

Mfr. Part No.
3C6UM

Mouser Part No
845-3C6UM

Altech

Circuit Breakers 6A MCB CCHARL 480Y/277VAC UL508

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Datasheet

1Expected 1/6/2026

$136.66

$114.33

$108.32

$90.27

$84.25

Min.: 1
Mult.: 1

6 A

277 VAC

80 VDC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A D Characteristic UL 508 3 POLE

3D15UM
Altech
1: $99.22
5Expected 7/7/2026

Mfr. Part No.
3D15UM

Mouser Part No
845-3D15UM

Altech

Circuit Breakers 15A D Characteristic UL 508 3 POLE

Learn More

Datasheet

5Expected 7/7/2026

$99.22

$97.70

$93.41

$91.73

View

Min.: 1
Mult.: 1

15 A

277 VAC

60 VDC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 25A D Characteristic UL 508 1 POLE

1D25UM
Altech
1: $50.93
4Factory Stock Available

Mfr. Part No.
1D25UM

Mouser Part No
845-1D25UM

Altech

Circuit Breakers 25A D Characteristic UL 508 1 POLE

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Datasheet

4Factory Stock Available

More Info Available

$50.93

$42.24

$38.98

$32.29

View

Min.: 1
Mult.: 1

25 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 50A D Characteristic UL 508 1 POLE

1D50UM
Altech
1: $56.88
55Factory Stock Available

Mfr. Part No.
1D50UM

Mouser Part No
845-1D50UM

Altech

Circuit Breakers 50A D Characteristic UL 508 1 POLE

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Datasheet

55Factory Stock Available

More Info Available

$56.88

$47.18

$43.52

$36.47

View

Min.: 1
Mult.: 1

50 A

277 VAC

24 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 6A D Characteristic UL 508 1 POLE

1D6UM
Altech
1: $50.93
5Factory Stock Available

Mfr. Part No.
1D6UM

Mouser Part No
845-1D6UM

Altech

Circuit Breakers 6A D Characteristic UL 508 1 POLE

Learn More

Datasheet

5Factory Stock Available

More Info Available

$50.93

$42.24

$38.98

$32.29

View

Min.: 1
Mult.: 1

6 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A CRT BKR ECHAR 277VAC UL508

1E15UM
Altech
1: $33.07
39Factory Stock Available

Mfr. Part No.
1E15UM

Mouser Part No
845-1E15UM

Altech

Circuit Breakers 15A CRT BKR ECHAR 277VAC UL508

Learn More

Datasheet

39Factory Stock Available

More Info Available

$33.07

$31.23

$29.95

$29.00

View

Min.: 1
Mult.: 1

Circuit Breaker

E-Trip

15 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A CRT BRKR ECHAR 277VAC UL508

1E5UM
Altech
1: $33.07
3Factory Stock Available

Mfr. Part No.
1E5UM

Mouser Part No
845-1E5UM

Altech

Circuit Breakers 5A CRT BRKR ECHAR 277VAC UL508

Learn More

Datasheet

3Factory Stock Available

More Info Available

$33.07

$31.23

$29.95

$29.00

View

Min.: 1
Mult.: 1

5 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A G Characteristic UL 508 1 POLE

1G5UM
Altech
1: $33.07
146Factory Stock Available

Mfr. Part No.
1G5UM

Mouser Part No
845-1G5UM

Altech

Circuit Breakers 5A G Characteristic UL 508 1 POLE

Learn More

Datasheet

146Factory Stock Available

More Info Available

$33.07

$32.41

$30.58

$27.70

View

Min.: 1
Mult.: 1

5 A

277 VAC

42 VDC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A MCB DCHAR 1P+N 277VAC UL508

2D15UM
Altech
1: $66.16
24Factory Stock Available

Mfr. Part No.
2D15UM

Mouser Part No
845-2D15UM

Altech

Circuit Breakers 15A MCB DCHAR 1P+N 277VAC UL508

Learn More

Datasheet

24Factory Stock Available

More Info Available

$66.16

$64.79

$60.62

$59.06

View

Min.: 1
Mult.: 1

15 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 40A MCB DCHAR 1P+N 277VAC UL508

2D40UM
Altech
1: $106.38
20Factory Stock Available

Mfr. Part No.
2D40UM

Mouser Part No
845-2D40UM

Altech

Circuit Breakers 40A MCB DCHAR 1P+N 277VAC UL508

Learn More

Datasheet

20Factory Stock Available

More Info Available

$106.38

$88.24

$82.07

$68.39

View

Min.: 1
Mult.: 1

40 A

277 VAC

60 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 1A CRT BRKR ECHAR 277VAC UL508

2E1UM
Altech
1: $95.31
10Factory Stock Available

Mfr. Part No.
2E1UM

Mouser Part No
845-2E1UM

Altech

Circuit Breakers 1A CRT BRKR ECHAR 277VAC UL508

Learn More

Datasheet

10Factory Stock Available

More Info Available

$95.31

$79.08

$72.93

$60.37

View

Min.: 1
Mult.: 1

1 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers CRT BRKR ECHAR 277VAC UL508

2E2UM
Altech
1: $95.31
5Factory Stock Available

Mfr. Part No.
2E2UM

Mouser Part No
845-2E2UM

Altech

Circuit Breakers CRT BRKR ECHAR 277VAC UL508

Learn More

Datasheet

5Factory Stock Available

More Info Available

$95.31

$79.08

$72.93

$60.37

View

Min.: 1
Mult.: 1

2 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 12A MCB GCHAR 1P+N 277VAC UL508

2G12UM
Altech
1: $95.31
7Factory Stock Available

Mfr. Part No.
2G12UM

Mouser Part No
845-2G12UM

Altech

Circuit Breakers 12A MCB GCHAR 1P+N 277VAC UL508

Learn More

Datasheet

7Factory Stock Available

More Info Available

$95.31

$79.08

$72.93

$60.37

View

Min.: 1
Mult.: 1

12 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 13A MCB GCHAR 277VAC UL508

2G13UM
Altech
1: $95.31
12Factory Stock Available

Mfr. Part No.
2G13UM

Mouser Part No
845-2G13UM

Altech

Circuit Breakers 13A MCB GCHAR 277VAC UL508

Learn More

Datasheet

12Factory Stock Available

More Info Available

$95.31

$79.08

$72.93

$60.37

View

Min.: 1
Mult.: 1

13 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A MCB GCHAR 1P+N 277VAC UL508

2G15UM
Altech
1: $66.16
19Factory Stock Available

Mfr. Part No.
2G15UM

Mouser Part No
845-2G15UM

Altech

Circuit Breakers 15A MCB GCHAR 1P+N 277VAC UL508

Learn More

Datasheet

19Factory Stock Available

More Info Available

$66.16

$66.15

$64.61

$63.23

View

Min.: 1
Mult.: 1

15 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 16A MCB GCHAR 1P+N 277VAC UL508

2G16UM
Altech
1: $66.16
200Factory Stock Available

Mfr. Part No.
2G16UM

Mouser Part No
845-2G16UM

Altech

Circuit Breakers 16A MCB GCHAR 1P+N 277VAC UL508

Learn More

Datasheet

200Factory Stock Available

More Info Available

$66.16

$62.59

$60.02

$57.77

View

Min.: 1
Mult.: 1

16 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A MCB GCHAR 1P+N 277VAC UL508

2G20UM
Altech
1: $66.16
37Factory Stock Available

Mfr. Part No.
2G20UM

Mouser Part No
845-2G20UM

Altech

Circuit Breakers 20A MCB GCHAR 1P+N 277VAC UL508

Learn More

Datasheet

37Factory Stock Available

More Info Available

$66.16

$64.79

$60.62

$59.06

View

Min.: 1
Mult.: 1

20 A

277 VAC

80 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 30A MCB GCHAR 1P+N 277VAC UL508

2G30UM
Altech
1: $95.31
6Factory Stock Available

Mfr. Part No.
2G30UM

Mouser Part No
845-2G30UM

Altech

Circuit Breakers 30A MCB GCHAR 1P+N 277VAC UL508

Learn More

Datasheet

6Factory Stock Available

More Info Available

$95.31

$79.08

$72.93

$60.37

View

Min.: 1
Mult.: 1

30 A

277 VAC

60 VDC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

UM (V-EA) Circuit Breakers

Customer Service Office

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300 mA
500 mA
750 mA
800 mA
1 A
1.6 A
2 A
2.5 A
3 A
3.5 A
4 A
5 A
6 A
8 A
10 A
12 A
12.5 A
13 A
15 A
16 A