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 15A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B15UR
Altech
1: $105.32
1Factory Stock Available

Mfr. Part No.
3B15UR

Mouser Part No
845-3B15UR

Altech

Circuit Breakers 15A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

1Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

15 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 25A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B25UR
Altech
1: $105.32
1Factory Stock Available

Mfr. Part No.
3B25UR

Mouser Part No
845-3B25UR

Altech

Circuit Breakers 25A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

1Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

25 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 30A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B30UR
Altech
1: $105.32
31Factory Stock Available

Mfr. Part No.
3B30UR

Mouser Part No
845-3B30UR

Altech

Circuit Breakers 30A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

31Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

30 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 32A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B32UR
Altech
1: $105.32
48Factory Stock Available

Mfr. Part No.
3B32UR

Mouser Part No
845-3B32UR

Altech

Circuit Breakers 32A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

48Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

32 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 3A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B3UR
Altech
1: $105.32
9Factory Stock Available

Mfr. Part No.
3B3UR

Mouser Part No
845-3B3UR

Altech

Circuit Breakers 3A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

9Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

3 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 40A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B40UR
Altech
1: $111.67
7Factory Stock Available

Mfr. Part No.
3B40UR

Mouser Part No
845-3B40UR

Altech

Circuit Breakers 40A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

7Factory Stock Available

More Info Available

$111.67

$92.64

$86.15

$71.79

View

Min.: 1
Mult.: 1

40 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 50A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B50UR
Altech
1: $111.67
1Factory Stock Available

Mfr. Part No.
3B50UR

Mouser Part No
845-3B50UR

Altech

Circuit Breakers 50A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

1Factory Stock Available

More Info Available

$111.67

$92.64

$86.15

$71.79

View

Min.: 1
Mult.: 1

50 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B5UR
Altech
1: $105.32
11Factory Stock Available

Mfr. Part No.
3B5UR

Mouser Part No
845-3B5UR

Altech

Circuit Breakers 5A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

11Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

5 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 63A,MCB B CHAR 3PL 480Y/277VAC, UL1077

3B63UR
Altech
1: $111.67
2Factory Stock Available

Mfr. Part No.
3B63UR

Mouser Part No
845-3B63UR

Altech

Circuit Breakers 63A,MCB B CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

2Factory Stock Available

More Info Available

$111.67

$92.64

$86.15

$71.79

View

Min.: 1
Mult.: 1

63 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 10A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C10UR
Altech
1: $105.32
32Factory Stock Available

Mfr. Part No.
3C10UR

Mouser Part No
845-3C10UR

Altech

Circuit Breakers 10A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

32Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

10 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 15A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C15UR
Altech
1: $74.43
33Factory Stock Available

Mfr. Part No.
3C15UR

Mouser Part No
845-3C15UR

Altech

Circuit Breakers 15A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

33Factory Stock Available

More Info Available

$74.43

$74.00

$72.20

View

Min.: 1
Mult.: 1

15 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 16A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C16UR
Altech
1: $105.32
14Factory Stock Available

Mfr. Part No.
3C16UR

Mouser Part No
845-3C16UR

Altech

Circuit Breakers 16A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

14Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

16 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 25A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C25UR
Altech
1: $105.32
12Factory Stock Available

Mfr. Part No.
3C25UR

Mouser Part No
845-3C25UR

Altech

Circuit Breakers 25A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

12Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

25 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 2A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C2UR
Altech
1: $105.32
15Factory Stock Available

Mfr. Part No.
3C2UR

Mouser Part No
845-3C2UR

Altech

Circuit Breakers 2A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

15Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

2 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 30A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C30UR
Altech
1: $105.32
13Factory Stock Available

Mfr. Part No.
3C30UR

Mouser Part No
845-3C30UR

Altech

Circuit Breakers 30A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

13Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

30 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 3A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C3UR
Altech
1: $105.32
2Factory Stock Available

Mfr. Part No.
3C3UR

Mouser Part No
845-3C3UR

Altech

Circuit Breakers 3A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

2Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

3 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 40A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C40UR
Altech
1: $111.67
40Factory Stock Available

Mfr. Part No.
3C40UR

Mouser Part No
845-3C40UR

Altech

Circuit Breakers 40A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

40Factory Stock Available

More Info Available

$111.67

$92.64

$86.15

$71.79

View

Min.: 1
Mult.: 1

Circuit Breaker

C-Trip

40 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 50A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C50UR
Altech
1: $111.67
37Factory Stock Available

Mfr. Part No.
3C50UR

Mouser Part No
845-3C50UR

Altech

Circuit Breakers 50A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

37Factory Stock Available

More Info Available

$111.67

$92.64

$86.15

$71.79

View

Min.: 1
Mult.: 1

50 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 5A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C5UR
Altech
1: $105.32
2Factory Stock Available

Mfr. Part No.
3C5UR

Mouser Part No
845-3C5UR

Altech

Circuit Breakers 5A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

2Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

5 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 6A,MCB C CHAR 3PL 480Y/277VAC, UL1077

3C6UR
Altech
1: $105.32
30Factory Stock Available

Mfr. Part No.
3C6UR

Mouser Part No
845-3C6UR

Altech

Circuit Breakers 6A,MCB C CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

30Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

6 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 0.5A,MCB D CHAR 3PL 480Y/277VAC, UL1077

3D05UR
Altech
1: $105.32
1Factory Stock Available

Mfr. Part No.
3D05UR

Mouser Part No
845-3D05UR

Altech

Circuit Breakers 0.5A,MCB D CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

1Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

500 mA

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 10A,MCB D CHAR 3PL 480Y/277VAC, UL1077

3D10UR
Altech
1: $105.32
53Factory Stock Available

Mfr. Part No.
3D10UR

Mouser Part No
845-3D10UR

Altech

Circuit Breakers 10A,MCB D CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

53Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

10 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A,MCB D CHAR 3PL 480Y/277VAC, UL1077

3D20UR
Altech
1: $105.32
5Factory Stock Available

Mfr. Part No.
3D20UR

Mouser Part No
845-3D20UR

Altech

Circuit Breakers 20A,MCB D CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

5Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

Circuit Breaker

D-Trip

20 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 2A,MCB D CHAR 3PL 480Y/277VAC, UL1077

3D2UR
Altech
1: $105.32
5Factory Stock Available

Mfr. Part No.
3D2UR

Mouser Part No
845-3D2UR

Altech

Circuit Breakers 2A,MCB D CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

5Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

Circuit Breaker

D-Trip

2 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 32A,MCB D CHAR 3PL 480Y/277VAC, UL1077

3D32UR
Altech
1: $105.32
34Factory Stock Available

Mfr. Part No.
3D32UR

Mouser Part No
845-3D32UR

Altech

Circuit Breakers 32A,MCB D CHAR 3PL 480Y/277VAC, UL1077

Learn More

Datasheet

34Factory Stock Available

More Info Available

$105.32

$87.38

$81.26

$67.71

View

Min.: 1
Mult.: 1

32 A

277 VAC

3 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