Circuit Breakers – Mouser Hong Kong

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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 6A,MCB B CHAR 1 PL, 277VAC, UL1077

1B6UR
Altech
1: HK$209.28
1In Stock

Mfr. Part No.
1B6UR

Mouser Part No
845-1B6UR

Altech

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

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Datasheet

1In Stock

HK$209.28

HK$146.73

HK$142.45

HK$135.47

View

Min.: 1
Mult.: 1

6 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1D6UR
Altech
1: HK$209.28
1In Stock

Mfr. Part No.
1D6UR

Mouser Part No
845-1D6UR

Altech

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

Learn More

Datasheet

1In Stock

HK$209.28

HK$146.73

HK$141.96

HK$136.29

View

Min.: 1
Mult.: 1

6 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

3B20UR
Altech
1: HK$602.28
2In Stock

Mfr. Part No.
3B20UR

Mouser Part No
845-3B20UR

Altech

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

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Datasheet

2In Stock

HK$602.28

HK$440.18

HK$437.06

HK$407.14

View

Min.: 1
Mult.: 1

Circuit Breakers

B-Trip

20 A

277 VAC

3 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 2C60UR, 60A, MCB, C CHAR

2C60UR
Altech
1: HK$458.35
1In Stock
1Expected 11/12/2026

Mfr. Part No.
2C60UR

Mouser Part No
845-2C60UR

Altech

Circuit Breakers 2C60UR, 60A, MCB, C CHAR

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Datasheet

1In Stock

1Expected 11/12/2026

HK$458.35

HK$339.40

HK$300.03

HK$270.77

View

Min.: 1
Mult.: 1

60 A

277 VAC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B05UR
Altech
1: HK$209.28
6In Stock

Mfr. Part No.
1B05UR

Mouser Part No
845-1B05UR

Altech

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

Learn More

Datasheet

6In Stock

HK$209.28

HK$176.07

HK$146.73

HK$140.64

View

Min.: 1
Mult.: 1

Circuit Breakers

B-Trip

500 mA

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B15UR
Altech
1: HK$209.28
6In Stock

Mfr. Part No.
1B15UR

Mouser Part No
845-1B15UR

Altech

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

Learn More

Datasheet

6In Stock

HK$209.28

HK$176.07

HK$146.73

HK$145.00

View

Min.: 1
Mult.: 1

Circuit Breakers

B-Trip

15 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B25UR
Altech
1: HK$209.28
3In Stock

Mfr. Part No.
1B25UR

Mouser Part No
845-1B25UR

Altech

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

Learn More

Datasheet

3In Stock

HK$209.28

HK$146.73

HK$140.64

HK$133.41

View

Min.: 1
Mult.: 1

25 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1C10UR
Altech
1: HK$199.17
1In Stock

Mfr. Part No.
1C10UR

Mouser Part No
845-1C10UR

Altech

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

Learn More

Datasheet

1In Stock

HK$199.17

HK$146.73

HK$145.58

HK$138.26

View

Min.: 1
Mult.: 1

10 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1D20UR
Altech
1: HK$209.28
19In Stock

Mfr. Part No.
1D20UR

Mouser Part No
845-1D20UR

Altech

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

Learn More

Datasheet

19In Stock

HK$209.28

HK$176.07

HK$175.83

HK$140.07

View

Min.: 1
Mult.: 1

Circuit Breakers

D-Trip

20 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1D4UR
Altech
1: HK$209.28
6In Stock

Mfr. Part No.
1D4UR

Mouser Part No
845-1D4UR

Altech

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

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Datasheet

6In Stock

HK$209.28

HK$176.07

HK$146.73

HK$144.67

View

Min.: 1
Mult.: 1

4 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1D8UR
Altech
1: HK$209.28
2In Stock

Mfr. Part No.
1D8UR

Mouser Part No
845-1D8UR

Altech

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

Learn More

Datasheet

2In Stock

HK$209.28

HK$146.73

HK$146.64

HK$135.05

View

Min.: 1
Mult.: 1

8 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 1A,MCB B CHAR 2PL 480Y/277VAC, UL1077

2B1UR
Altech
1: HK$411.99
22In Stock

Mfr. Part No.
2B1UR

Mouser Part No
845-2B1UR

Altech

Circuit Breakers 1A,MCB B CHAR 2PL 480Y/277VAC, UL1077

Learn More

Datasheet

22In Stock

HK$411.99

HK$352.14

HK$330.94

HK$283.84

View

Min.: 1
Mult.: 1

1 A

277 VAC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 16A,MCB C CHAR 2PL 480Y/277VAC, UL1077

2C16UR
Altech
1: HK$293.45
4In Stock

Mfr. Part No.
2C16UR

Mouser Part No
845-2C16UR

Altech

Circuit Breakers 16A,MCB C CHAR 2PL 480Y/277VAC, UL1077

Learn More

Datasheet

4In Stock

HK$293.45

HK$290.08

HK$281.21

View

Min.: 1
Mult.: 1

Circuit Breakers

C-Trip

16 A

277 VAC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 0.5A,MCB D CHAR 2PL 480Y/277VAC, UL1077

2D05UR
Altech
1: HK$411.99
1In Stock

Mfr. Part No.
2D05UR

Mouser Part No
845-2D05UR

Altech

Circuit Breakers 0.5A,MCB D CHAR 2PL 480Y/277VAC, UL1077

Learn More

Datasheet

1In Stock

HK$411.99

HK$293.45

HK$283.84

HK$275.04

View

Min.: 1
Mult.: 1

500 mA

277 VAC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 10A,MCB D CHAR 2PL 480Y/277VAC, UL1077

2D10UR
Altech
1: HK$411.99
7In Stock

Mfr. Part No.
2D10UR

Mouser Part No
845-2D10UR

Altech

Circuit Breakers 10A,MCB D CHAR 2PL 480Y/277VAC, UL1077

Learn More

Datasheet

7In Stock

HK$411.99

HK$352.14

HK$293.45

HK$284.58

View

Min.: 1
Mult.: 1

Circuit Breakers

D-Trip

10 A

277 VAC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 20A,MCB D CHAR 2PL 480Y/277VAC, UL1077

2D20UR
Altech
1: HK$411.99
10In Stock

Mfr. Part No.
2D20UR

Mouser Part No
845-2D20UR

Altech

Circuit Breakers 20A,MCB D CHAR 2PL 480Y/277VAC, UL1077

Learn More

Datasheet

10In Stock

HK$411.99

HK$352.14

HK$331.02

HK$276.60

View

Min.: 1
Mult.: 1

Circuit Breakers

D-Trip

20 A

277 VAC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 6A,MCB D CHAR 2PL 480Y/277VAC, UL1077

2D6UR
Altech
1: HK$293.45
5In Stock

Mfr. Part No.
2D6UR

Mouser Part No
845-2D6UR

Altech

Circuit Breakers 6A,MCB D CHAR 2PL 480Y/277VAC, UL1077

Learn More

Datasheet

5In Stock

HK$293.45

HK$290.41

HK$282.52

View

Min.: 1
Mult.: 1

6 A

277 VAC

2 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1D10UR
Altech
1: HK$146.73
5Expected 30/9/2026

Mfr. Part No.
1D10UR

Mouser Part No
845-1D10UR

Altech

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

Learn More

Datasheet

5Expected 30/9/2026

HK$146.73

HK$146.64

HK$141.71

HK$137.36

View

Min.: 1
Mult.: 1

10 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 1 POLE, 277VAC UL1077

1B10UR
Altech
1: HK$146.73
115Factory Stock Available

Mfr. Part No.
1B10UR

Mouser Part No
845-1B10UR

Altech

Circuit Breakers 1 POLE, 277VAC UL1077

Learn More

Datasheet

115Factory Stock Available

More Info Available

HK$146.73

HK$146.07

HK$141.80

HK$139.08

View

Min.: 1
Mult.: 1

10 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 12A,MCB B CHAR 1 PL, 277VAC, UL1077

1B12UR
Altech
1: HK$146.73
35Factory Stock Available

Mfr. Part No.
1B12UR

Mouser Part No
845-1B12UR

Altech

Circuit Breakers 12A,MCB B CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

35Factory Stock Available

More Info Available

HK$146.73

HK$140.64

HK$133.41

HK$127.90

View

Min.: 1
Mult.: 1

12 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

Circuit Breakers 13A,MCB B CHAR 1 PL, 277VAC, UL1077

1B13UR
Altech
1: HK$146.73
15Factory Stock Available

Mfr. Part No.
1B13UR

Mouser Part No
845-1B13UR

Altech

Circuit Breakers 13A,MCB B CHAR 1 PL, 277VAC, UL1077

Learn More

Datasheet

15Factory Stock Available

More Info Available

HK$146.73

HK$142.45

HK$136.70

HK$132.34

View

Min.: 1
Mult.: 1

13 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B16UR
Altech
1: HK$146.73
1Factory Stock Available

Mfr. Part No.
1B16UR

Mouser Part No
845-1B16UR

Altech

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

Learn More

Datasheet

1Factory Stock Available

More Info Available

HK$146.73

HK$140.64

HK$133.41

HK$127.90

View

Min.: 1
Mult.: 1

16 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B1UR
Altech
1: HK$146.73
19Factory Stock Available

Mfr. Part No.
1B1UR

Mouser Part No
845-1B1UR

Altech

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

Learn More

Datasheet

19Factory Stock Available

More Info Available

HK$146.73

HK$142.45

HK$135.47

HK$131.11

View

Min.: 1
Mult.: 1

1 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

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

1B20UR
Altech
1: HK$146.73
56Factory Stock Available

Mfr. Part No.
1B20UR

Mouser Part No
845-1B20UR

Altech

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

Learn More

Datasheet

56Factory Stock Available

More Info Available

HK$146.73

HK$143.36

HK$137.11

HK$132.34

View

Min.: 1
Mult.: 1

20 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: HK$146.73
30Factory 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

30Factory Stock Available

More Info Available

HK$146.73

HK$142.45

HK$136.70

HK$132.34

View

Min.: 1
Mult.: 1

30 A

277 VAC

1 Pole

Handle

- 25 C

+ 55 C

Non-Illuminated

UR Circuit Breakers

Customer Service Office

Company

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Support

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