Circuit Breakers – Mouser Singapore

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UL (AC) & DL (DC) Circuit Breakers

Altech UL (AC) and DL (DC) Circuit Breakers are available in both AC and DC models and offer 10kA short-circuit interrupting capacity. These thermal magnetic modules feature a 17.5mm width, a miniature size, and DIN-rail mounting. The series has a 0.3 to 63A current range and 6000 switching cycles of electrical life. Applications for Altech UL (AC) and DL (DC) Circuit Breakers include lighting, wiring protection, appliances, transformers, and telecommunication.

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Part #

Circuit Breakers 10A, C CHAR, 1POLE 277VAC, UL489

1C10UL
Altech
1: $45.60
46In Stock
52Expected 11/9/2026

Mfr. Part No.
1C10UL

Mouser Part No
845-1C10UL

Altech

Circuit Breakers 10A, C CHAR, 1POLE 277VAC, UL489

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Datasheet

46In Stock

52Expected 11/9/2026

$45.60

$43.79

$43.32

$40.05

View

Min.: 1
Mult.: 1

10 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 12A, C CHAR, 2POLE 480Y/277VAC,UL489

2C12UL
Altech
1: $116.40
28In Stock

Mfr. Part No.
2C12UL

Mouser Part No
845-2C12UL

Altech

Circuit Breakers 12A, C CHAR, 2POLE 480Y/277VAC,UL489

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Datasheet

28In Stock

$116.40

$101.95

$96.34

$85.48

View

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

12 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 4A, C CHAR, 2POLE 480Y/277VAC,UL489

2C4UL
Altech
1: $122.21
26In Stock

Mfr. Part No.
2C4UL

Mouser Part No
845-2C4UL

Altech

Circuit Breakers 4A, C CHAR, 2POLE 480Y/277VAC,UL489

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Datasheet

26In Stock

$122.21

$105.07

$99.55

$87.62

View

Min.: 1
Mult.: 1

4 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A, C CHAR, 1POLE 277VAC, UL489

1C15UL
Altech
1: $45.60
33In Stock
40Expected 1/1/2027

Mfr. Part No.
1C15UL

Mouser Part No
845-1C15UL

Altech

Circuit Breakers 15A, C CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

33In Stock

40Expected 1/1/2027

$45.60

$42.21

$40.99

View

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

15 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 16A, C CHAR, 1POLE 277VAC, UL489

1C16UL
Altech
1: $63.82
3In Stock

Mfr. Part No.
1C16UL

Mouser Part No
845-1C16UL

Altech

Circuit Breakers 16A, C CHAR, 1POLE 277VAC, UL489

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Datasheet

3In Stock

$63.82

$45.60

$44.12

$42.94

View

Min.: 1
Mult.: 1

16 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A, C CHAR, 1POLE 277VAC, UL489

1C20UL
Altech
1: $45.60
4In Stock
8Expected 18/12/2026

Mfr. Part No.
1C20UL

Mouser Part No
845-1C20UL

Altech

Circuit Breakers 20A, C CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

4In Stock

8Expected 18/12/2026

$45.60

$45.27

$42.70

$41.37

View

Min.: 1
Mult.: 1

20 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 25A, C CHAR, 1POLE 277VAC, UL489

1C25UL
Altech
1: $63.82
7In Stock

Mfr. Part No.
1C25UL

Mouser Part No
845-1C25UL

Altech

Circuit Breakers 25A, C CHAR, 1POLE 277VAC, UL489

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Datasheet

7In Stock

$63.82

$54.71

$45.60

$43.47

View

Min.: 1
Mult.: 1

25 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 32A, C CHAR, 1POLE 277VAC, UL489

1C32UL
Altech
1: $63.82
4In Stock

Mfr. Part No.
1C32UL

Mouser Part No
845-1C32UL

Altech

Circuit Breakers 32A, C CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

4In Stock

$63.82

$45.60

$43.44

$42.28

View

Min.: 1
Mult.: 1

32 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 4A, C CHAR, 1POLE 277VAC, UL489

1C4UL
Altech
1: $45.60
14In Stock

Mfr. Part No.
1C4UL

Mouser Part No
845-1C4UL

Altech

Circuit Breakers 4A, C CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

14In Stock

$45.60

$45.08

$43.78

$42.46

View

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

4 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A, C CHAR, 1POLE 277VAC, UL489

1C5UL
Altech
1: $45.60
4In Stock
26On Order

Mfr. Part No.
1C5UL

Mouser Part No
845-1C5UL

Altech

Circuit Breakers 5A, C CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

4In Stock

26On Order

$45.60

$44.50

$43.32

$42.13

View

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

5 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 10A, D CHAR, 1POLE 277VAC, UL489

1D10UL
Altech
1: $45.60
16In Stock
21Expected 11/1/2027

Mfr. Part No.
1D10UL

Mouser Part No
845-1D10UL

Altech

Circuit Breakers 10A, D CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

16In Stock

21Expected 11/1/2027

$45.60

$42.51

$41.38

$40.45

View

Min.: 1
Mult.: 1

Circuit Breakers

D-Trip

10 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A, D CHAR, 1POLE 277VAC, UL489

1D20UL
Altech
1: $58.98
5In Stock

Mfr. Part No.
1D20UL

Mouser Part No
845-1D20UL

Altech

Circuit Breakers 20A, D CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

5In Stock

$58.98

$52.55

$45.60

$43.72

View

Min.: 1
Mult.: 1

20 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A, D CHAR, 1POLE 277VAC, UL489

1D5UL
Altech
1: $45.60
1In Stock

Mfr. Part No.
1D5UL

Mouser Part No
845-1D5UL

Altech

Circuit Breakers 5A, D CHAR, 1POLE 277VAC, UL489

Learn More

Datasheet

1In Stock

$45.60

$43.51

$42.54

$41.58

View

Min.: 1
Mult.: 1

5 A

277 VAC

1 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 2C13UL, 13A, CIRCUIT BREAKER

2C13UL
Altech
1: $122.21
6In Stock
7Expected 18/12/2026

Mfr. Part No.
2C13UL

Mouser Part No
845-2C13UL

Altech

Circuit Breakers 2C13UL, 13A, CIRCUIT BREAKER

Learn More

Datasheet

6In Stock

7Expected 18/12/2026

$122.21

$105.07

$91.19

$86.37

View

Min.: 1
Mult.: 1

13 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A, C CHAR, 2POLE 480Y/277VAC,UL489

2C15UL
Altech
1: $122.21
17In Stock

Mfr. Part No.
2C15UL

Mouser Part No
845-2C15UL

Altech

Circuit Breakers 15A, C CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

17In Stock

$122.21

$105.07

$99.55

$84.08

View

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

15 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 32A, C CHAR, 2POLE 480Y/277VAC,UL489

2C32UL
Altech
1: $133.44
2In Stock

Mfr. Part No.
2C32UL

Mouser Part No
845-2C32UL

Altech

Circuit Breakers 32A, C CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

2In Stock

$133.44

$91.19

$89.16

$86.47

View

Min.: 1
Mult.: 1

32 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 3A, C CHAR, 2POLE 480Y/277VAC,UL489

2C3UL
Altech
1: $91.19
2In Stock
5Expected 18/1/2027

Mfr. Part No.
2C3UL

Mouser Part No
845-2C3UL

Altech

Circuit Breakers 3A, C CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

2In Stock

5Expected 18/1/2027

$91.19

$91.17

$88.78

View

Min.: 1
Mult.: 1

3 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A, C CHAR, 2POLE 480Y/277VAC,UL489

2C5UL
Altech
1: $91.19
4In Stock

Mfr. Part No.
2C5UL

Mouser Part No
845-2C5UL

Altech

Circuit Breakers 5A, C CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

4In Stock

$91.19

$88.96

$85.86

$80.21

View

Min.: 1
Mult.: 1

5 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 0.3A, D CHAR, 2POLE 480Y/277VAC,UL489

2D03UL
Altech
1: $122.21
6In Stock

Mfr. Part No.
2D03UL

Mouser Part No
845-2D03UL

Altech

Circuit Breakers 0.3A, D CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

6In Stock

$122.21

$105.07

$90.60

$84.93

View

Min.: 1
Mult.: 1

300 mA

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 0.5A, D CHAR, 2POLE 480Y/277VAC,UL489

2D05UL
Altech
1: $121.46
5In Stock

Mfr. Part No.
2D05UL

Mouser Part No
845-2D05UL

Altech

Circuit Breakers 0.5A, D CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

5In Stock

$121.46

$103.02

$91.19

$91.17

View

Min.: 1
Mult.: 1

500 mA

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A, D CHAR, 2POLE 480Y/277VAC,UL489

2D20UL
Altech
1: $109.58
14In Stock

Mfr. Part No.
2D20UL

Mouser Part No
845-2D20UL

Altech

Circuit Breakers 20A, D CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

14In Stock

$109.58

$98.22

$93.68

$86.35

View

Min.: 1
Mult.: 1

Circuit Breakers

D-Trip

20 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 4A, D CHAR, 2POLE 480Y/277VAC,UL489

2D4UL
Altech
1: $91.19
6In Stock

Mfr. Part No.
2D4UL

Mouser Part No
845-2D4UL

Altech

Circuit Breakers 4A, D CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

6In Stock

$91.19

$89.35

$87.05

View

Min.: 1
Mult.: 1

4 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 8A, D CHAR, 2POLE 480Y/277VAC,UL489

2D8UL
Altech
1: $91.19
19In Stock

Mfr. Part No.
2D8UL

Mouser Part No
845-2D8UL

Altech

Circuit Breakers 8A, D CHAR, 2POLE 480Y/277VAC,UL489

Learn More

Datasheet

19In Stock

$91.19

$86.62

$80.93

View

Min.: 1
Mult.: 1

8 A

277 VAC

2 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 10A, C CHAR, 3POLE 480Y/277VAC,UL489

3C10UL
Altech
1: $136.79
9In Stock

Mfr. Part No.
3C10UL

Mouser Part No
845-3C10UL

Altech

Circuit Breakers 10A, C CHAR, 3POLE 480Y/277VAC,UL489

Learn More

Datasheet

9In Stock

$136.79

$134.53

$128.30

$125.31

View

Min.: 1
Mult.: 1

10 A

277 VAC

3 Pole

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 32A, C CHAR, 3POLE 480Y/277VAC,UL489

3C32UL
Altech
1: $179.13
6In Stock

Mfr. Part No.
3C32UL

Mouser Part No
845-3C32UL

Altech

Circuit Breakers 32A, C CHAR, 3POLE 480Y/277VAC,UL489

Learn More

Datasheet

6In Stock

$179.13

$151.35

$136.79

$130.64

View

Min.: 1
Mult.: 1

32 A

277 VAC

3 Pole

- 25 C

+ 55 C

Non-Illuminated

UL (AC) & DL (DC) Circuit Breakers

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300 mA
500 mA
1 A
1.6 A
2 A
3 A
4 A
5 A
6 A
8 A
10 A
12 A
13 A
15 A
16 A
20 A
25 A
30 A
32 A
40 A