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 25A,MCB B CHAR 1 PL, 277VAC, UL1077

1B25UR
Altech
1: $38.86
67Factory Stock Available

Mfr. Part No.
1B25UR

Mouser Part No
845-1B25UR

Altech

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

Learn More

Datasheet

67Factory Stock Available

More Info Available

$38.86

$32.25

$29.75

$24.64

View

Min.: 1
Mult.: 1

25 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B2UR
Altech
1: $24.81
57Factory Stock Available

Mfr. Part No.
1B2UR

Mouser Part No
845-1B2UR

Altech

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

Learn More

Datasheet

57Factory Stock Available

More Info Available

$24.81

$24.31

$23.23

$22.53

View

Min.: 1
Mult.: 1

2 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B30UR
Altech
1: $38.86
60Factory Stock Available

Mfr. Part No.
1B30UR

Mouser Part No
845-1B30UR

Altech

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

Learn More

Datasheet

60Factory Stock Available

More Info Available

$38.86

$32.25

$29.75

$24.64

View

Min.: 1
Mult.: 1

30 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B32UR
Altech
1: $38.86
37Factory Stock Available

Mfr. Part No.
1B32UR

Mouser Part No
845-1B32UR

Altech

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

Learn More

Datasheet

37Factory Stock Available

More Info Available

$38.86

$32.25

$29.75

$24.64

View

Min.: 1
Mult.: 1

32 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B3UR
Altech
1: $38.86
73Factory Stock Available

Mfr. Part No.
1B3UR

Mouser Part No
845-1B3UR

Altech

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

Learn More

Datasheet

73Factory Stock Available

More Info Available

$38.86

$32.25

$29.75

$24.64

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: $41.23
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

$41.23

$34.21

$31.55

$26.15

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: $38.86
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

$38.86

$32.25

$29.75

$24.64

View

Min.: 1
Mult.: 1

4 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: $24.81
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

$24.81

$23.59

$22.52

$21.74

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: $24.81
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

$24.81

$23.59

$22.52

$21.74

View

Min.: 1
Mult.: 1

500 mA

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1C10UR
Altech
1: $24.81
182Factory Stock Available

Mfr. Part No.
1C10UR

Mouser Part No
845-1C10UR

Altech

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

Learn More

Datasheet

182Factory Stock Available

More Info Available

$24.81

$23.76

$22.64

$21.84

View

Min.: 1
Mult.: 1

10 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A,MCB C CHAR 1 PL, 277VAC, UL1077

1C15UR
Altech
1: $24.81
7Factory Stock Available

Mfr. Part No.
1C15UR

Mouser Part No
845-1C15UR

Altech

Circuit Breakers 15A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

7Factory Stock Available

More Info Available

$24.81

$23.59

$22.52

$21.74

View

Min.: 1
Mult.: 1

15 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1C16UR
Altech
1: $24.81
111Factory 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

111Factory Stock Available

More Info Available

$24.81

$24.80

$23.85

$23.20

View

Min.: 1
Mult.: 1

Circuit Breaker

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: $24.81
34Factory 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

34Factory Stock Available

More Info Available

$24.81

$23.76

$22.64

$21.84

View

Min.: 1
Mult.: 1

1 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A,MCB C CHAR 1 PL, 277VAC, UL1077

1C20UR
Altech
1: $24.81
64Factory Stock Available

Mfr. Part No.
1C20UR

Mouser Part No
845-1C20UR

Altech

Circuit Breakers 20A,MCB C CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

64Factory Stock Available

More Info Available

$24.81

$23.32

$22.42

$21.57

View

Min.: 1
Mult.: 1

20 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: $24.81
162Factory 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

162Factory Stock Available

More Info Available

$24.81

$23.59

$22.52

$21.74

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: $38.86
6Factory 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

6Factory Stock Available

More Info Available

$38.86

$32.25

$29.75

$24.64

View

Min.: 1
Mult.: 1

Circuit Breaker

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: $24.81
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

$24.81

$23.59

$22.52

$21.74

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: $24.81
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

$24.81

$23.76

$22.64

$21.84

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: $26.31
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

$26.31

$25.02

$23.89

$23.07

$22.38

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: $24.81
12Factory 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

12Factory Stock Available

More Info Available

$24.81

$23.67

$22.73

$21.81

$21.03

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: $26.31
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

$26.31

$25.02

$23.89

$23.07

$22.38

Min.: 1
Mult.: 1

50 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1C5UR
Altech
1: $24.81
31Factory Stock Available

Mfr. Part No.
1C5UR

Mouser Part No
845-1C5UR

Altech

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

Learn More

Datasheet

31Factory Stock Available

More Info Available

$24.81

$22.88

$22.42

$21.57

View

Min.: 1
Mult.: 1

5 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: $41.23
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

$41.23

$34.21

$31.55

$26.15

View

Min.: 1
Mult.: 1

63 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: $38.86
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

$38.86

$32.25

$29.75

$24.64

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: $38.86
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

$38.86

$32.25

$29.75

$24.64

View

Min.: 1
Mult.: 1

500 mA

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