Circuit Breakers – Mouser Singapore

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UR Circuit Breakers

Altech UR Circuit Breakers are UL 1077-recognized supplementary protectors with B-, C-, and D-trip curves. These DIN-rail-mounted modules are available in 1-, 2-, and 3-pole variants as well as an add-on neutral pole option. Altech UR Circuit Breakers feature a 17.5mm width per pole and 10kA short circuit withstand capacity. Typical applications include sensitive electronics, power supplies, and appliance circuits.

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Part #

Circuit Breakers 3A,MCB B CHAR 1 PL, 277VAC, UL1077

1B3UR
Altech
1: $38.03
107Factory Stock Available

Mfr. Part No.
1B3UR

Mouser Part No
845-1B3UR

Altech

Circuit Breakers 3A,MCB B CHAR 1 PL, 277VAC, UL1077

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Datasheet

107Factory Stock Available

More Info Available

$38.03

$31.55

$29.10

$24.11

View

Min.: 1
Mult.: 1

3 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 40A,MCB B CHAR 1 PL, 277VAC, UL1077

1B40UR
Altech
1: $40.34
17Factory Stock Available

Mfr. Part No.
1B40UR

Mouser Part No
845-1B40UR

Altech

Circuit Breakers 40A,MCB B CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

17Factory Stock Available

More Info Available

$40.34

$33.47

$30.87

$25.58

View

Min.: 1
Mult.: 1

40 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 4A,MCB B CHAR 1 PL, 277VAC, UL1077

1B4UR
Altech
1: $38.03
3Factory Stock Available

Mfr. Part No.
1B4UR

Mouser Part No
845-1B4UR

Altech

Circuit Breakers 4A,MCB B CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

3Factory Stock Available

More Info Available

$38.03

$31.55

$29.10

$24.11

View

Min.: 1
Mult.: 1

4 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A,MCB B CHAR 1 PL, 277VAC, UL1077

1B5UR
Altech
1: $38.03
65Factory Stock Available

Mfr. Part No.
1B5UR

Mouser Part No
845-1B5UR

Altech

Circuit Breakers 5A,MCB B CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

65Factory Stock Available

More Info Available

$38.03

$31.55

$29.10

$24.11

View

Min.: 1
Mult.: 1

5 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 8A,MCB B CHAR 1 PL, 277VAC, UL1077

1B8UR
Altech
1: $24.28
53Factory Stock Available

Mfr. Part No.
1B8UR

Mouser Part No
845-1B8UR

Altech

Circuit Breakers 8A,MCB B CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

53Factory Stock Available

More Info Available

$24.28

$23.08

$22.03

$21.27

View

Min.: 1
Mult.: 1

8 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 0.5A,MCB C CHAR 1 PL, 277VAC, UL1077

1C05UR
Altech
1: $24.28
74Factory Stock Available

Mfr. Part No.
1C05UR

Mouser Part No
845-1C05UR

Altech

Circuit Breakers 0.5A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

74Factory Stock Available

More Info Available

$24.28

$23.08

$22.03

$21.27

View

Min.: 1
Mult.: 1

500 mA

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 16A,MCB C CHAR 1 PL, 277VAC, UL1077

1C16UR
Altech
1: $24.28
59Factory Stock Available

Mfr. Part No.
1C16UR

Mouser Part No
845-1C16UR

Altech

Circuit Breakers 16A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

59Factory Stock Available

More Info Available

$24.28

$24.26

$23.34

$22.70

View

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

16 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 1A,MCB C CHAR 1 PL, 277VAC, UL1077

1C1UR
Altech
1: $24.28
19Factory Stock Available

Mfr. Part No.
1C1UR

Mouser Part No
845-1C1UR

Altech

Circuit Breakers 1A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

19Factory Stock Available

More Info Available

$24.28

$23.24

$22.15

$21.37

View

Min.: 1
Mult.: 1

1 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 25A,MCB C CHAR 1 PL, 277VAC, UL1077

1C25UR
Altech
1: $24.28
144Factory Stock Available

Mfr. Part No.
1C25UR

Mouser Part No
845-1C25UR

Altech

Circuit Breakers 25A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

144Factory Stock Available

More Info Available

$24.28

$23.08

$22.03

$21.27

View

Min.: 1
Mult.: 1

25 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 2A,MCB C CHAR 1 PL, 277VAC, UL1077

1C2UR
Altech
1: $24.28
31Factory Stock Available

Mfr. Part No.
1C2UR

Mouser Part No
845-1C2UR

Altech

Circuit Breakers 2A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

31Factory Stock Available

More Info Available

$24.28

$24.26

$23.51

$22.83

Quote

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

2 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 30A,MCB C CHAR 1 PL, 277VAC, UL1077

1C30UR
Altech
1: $24.28
14Factory Stock Available

Mfr. Part No.
1C30UR

Mouser Part No
845-1C30UR

Altech

Circuit Breakers 30A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

14Factory Stock Available

More Info Available

$24.28

$23.08

$22.03

$21.27

View

Min.: 1
Mult.: 1

30 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 32A,MCB C CHAR 1 PL, 277VAC, UL1077

1C32UR
Altech
1: $24.28
44Factory Stock Available

Mfr. Part No.
1C32UR

Mouser Part No
845-1C32UR

Altech

Circuit Breakers 32A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

44Factory Stock Available

More Info Available

$24.28

$23.24

$22.15

$21.37

View

Min.: 1
Mult.: 1

32 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 40A,MCB C CHAR 1 PL, 277VAC, UL1077

1C40UR
Altech
1: $25.74
27Factory Stock Available

Mfr. Part No.
1C40UR

Mouser Part No
845-1C40UR

Altech

Circuit Breakers 40A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

27Factory Stock Available

More Info Available

$25.74

$24.48

$23.38

$22.58

$21.90

Min.: 1
Mult.: 1

40 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 4A,MCB C CHAR 1 PL, 277VAC, UL1077

1C4UR
Altech
1: $24.28
11Factory Stock Available

Mfr. Part No.
1C4UR

Mouser Part No
845-1C4UR

Altech

Circuit Breakers 4A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

11Factory Stock Available

More Info Available

$24.28

Quote

Min.: 1
Mult.: 1

4 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 50A,MCB C CHAR 1 PL, 277VAC, UL1077

1C50UR
Altech
1: $25.74
35Factory Stock Available

Mfr. Part No.
1C50UR

Mouser Part No
845-1C50UR

Altech

Circuit Breakers 50A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

35Factory Stock Available

More Info Available

$25.74

$24.48

$23.38

$22.58

$21.90

Min.: 1
Mult.: 1

50 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 63A,MCB C CHAR 1 PL, 277VAC, UL1077

1C63UR
Altech
1: $40.34
60Factory Stock Available

Mfr. Part No.
1C63UR

Mouser Part No
845-1C63UR

Altech

Circuit Breakers 63A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

60Factory Stock Available

More Info Available

$40.34

$33.47

$30.87

$25.58

View

Min.: 1
Mult.: 1

63 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 6A,MCB C CHAR 1 PL, 277VAC, UL1077

1C6UR
Altech
1: $24.28
18Factory Stock Available

Mfr. Part No.
1C6UR

Mouser Part No
845-1C6UR

Altech

Circuit Breakers 6A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

18Factory Stock Available

More Info Available

$24.28

$24.02

$23.30

$22.77

View

Min.: 1
Mult.: 1

6 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 8A,MCB C CHAR 1 PL, 277VAC, UL1077

1C8UR
Altech
1: $38.03
4Factory Stock Available

Mfr. Part No.
1C8UR

Mouser Part No
845-1C8UR

Altech

Circuit Breakers 8A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

4Factory Stock Available

More Info Available

$38.03

$31.55

$29.10

$24.11

View

Min.: 1
Mult.: 1

8 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 0.5A,MCB D CHAR 1 PL, 277VAC, UL1077

1D05UR
Altech
1: $38.03
6Factory Stock Available

Mfr. Part No.
1D05UR

Mouser Part No
845-1D05UR

Altech

Circuit Breakers 0.5A,MCB D CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

6Factory Stock Available

More Info Available

$38.03

$31.55

$29.10

$24.11

View

Min.: 1
Mult.: 1

500 mA

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 10A,MCB D CHAR 1 PL, 277VAC, UL1077

1D10UR
Altech
1: $24.28
5Factory Stock Available

Mfr. Part No.
1D10UR

Mouser Part No
845-1D10UR

Altech

Circuit Breakers 10A,MCB D CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

5Factory Stock Available

More Info Available

$24.28

$23.58

$23.01

$22.86

Quote

Min.: 1
Mult.: 1

10 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 16A,MCB D CHAR 1 PL, 277VAC, UL1077

1D16UR
Altech
1: $38.03
10Factory Stock Available

Mfr. Part No.
1D16UR

Mouser Part No
845-1D16UR

Altech

Circuit Breakers 16A,MCB D CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

10Factory Stock Available

More Info Available

$38.03

$31.55

$29.10

$24.11

View

Min.: 1
Mult.: 1

16 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 25A,MCB D CHAR 1 PL, 277VAC, UL1077

1D25UR
Altech
1: $24.28
85Factory Stock Available

Mfr. Part No.
1D25UR

Mouser Part No
845-1D25UR

Altech

Circuit Breakers 25A,MCB D CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

85Factory Stock Available

More Info Available

$24.28

$24.17

$23.22

$22.51

View

Min.: 1
Mult.: 1

25 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 2A,MCB D CHAR 1 PL, 277VAC, UL1077

1D2UR
Altech
1: $24.28
16Factory Stock Available

Mfr. Part No.
1D2UR

Mouser Part No
845-1D2UR

Altech

Circuit Breakers 2A,MCB D CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

16Factory Stock Available

More Info Available

$24.28

$24.14

Quote

Min.: 1
Mult.: 1

2 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 30A,MCB D CHAR 1 PL, 277VAC, UL1077

1D30UR
Altech
1: $24.28
1Factory Stock Available

Mfr. Part No.
1D30UR

Mouser Part No
845-1D30UR

Altech

Circuit Breakers 30A,MCB D CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

1Factory Stock Available

More Info Available

$24.28

$24.17

$23.22

$22.51

View

Min.: 1
Mult.: 1

30 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 32A,MCB D CHAR 1 PL, 277VAC, UL1077

1D32UR
Altech
1: $38.03
22Factory Stock Available

Mfr. Part No.
1D32UR

Mouser Part No
845-1D32UR

Altech

Circuit Breakers 32A,MCB D CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

22Factory Stock Available

More Info Available

$38.03

$31.55

$29.10

$24.11

View

Min.: 1
Mult.: 1

32 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

UR Circuit Breakers

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500 mA
1 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
50 A
60 A