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.

Results: 190
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (CRC) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Product
Type
Current Rating
Voltage Rating AC
Number of Poles
Actuator
Minimum Operating Temperature
Maximum Operating Temperature
Illuminated
Altech Circuit Breakers 6A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
1In Stock
Min.: 1
Mult.: 1

UR 6 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 6A,MCB D CHAR 1 PL, 277VAC, UL1077
Datasheet
1In Stock
Min.: 1
Mult.: 1

UR 6 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 20A,MCB B CHAR 3PL 480Y/277VAC, UL1077
Datasheet
3In Stock
Min.: 1
Mult.: 1

UR Circuit Breakers B-Trip 20 A 277 VAC 3 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 2C60UR, 60A, MCB, C CHAR
Datasheet
1In Stock
1Expected 12/11/2026
Min.: 1
Mult.: 1
UR 60 A 277 VAC 2 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 0.5A, MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
6In Stock
Min.: 1
Mult.: 1

UR Circuit Breakers B-Trip 500 mA 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 15A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
6In Stock
Min.: 1
Mult.: 1

UR Circuit Breakers B-Trip 15 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 25A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
3In Stock
Min.: 1
Mult.: 1

UR 25 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 10A,MCB C CHAR 1 PL, 277VAC, UL1077
Datasheet
1In Stock
Min.: 1
Mult.: 1

UR 10 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 20A,MCB D CHAR 1 PL, 277VAC, UL1077
Datasheet
19In Stock
Min.: 1
Mult.: 1

UR Circuit Breakers D-Trip 20 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 4A,MCB D CHAR 1 PL, 277VAC, UL1077
Datasheet
6In Stock
Min.: 1
Mult.: 1

UR 4 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 8A,MCB D CHAR 1 PL, 277VAC, UL1077
Datasheet
3In Stock
Min.: 1
Mult.: 1

UR 8 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 1A,MCB B CHAR 2PL 480Y/277VAC, UL1077
Datasheet
22In Stock
Min.: 1
Mult.: 1

UR 1 A 277 VAC 2 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 16A,MCB C CHAR 2PL 480Y/277VAC, UL1077
Datasheet
4In Stock
Min.: 1
Mult.: 1

UR Circuit Breakers C-Trip 16 A 277 VAC 2 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 0.5A,MCB D CHAR 2PL 480Y/277VAC, UL1077
Datasheet
1In Stock
Min.: 1
Mult.: 1

UR 500 mA 277 VAC 2 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 10A,MCB D CHAR 2PL 480Y/277VAC, UL1077
Datasheet
7In Stock
Min.: 1
Mult.: 1

UR Circuit Breakers D-Trip 10 A 277 VAC 2 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 20A,MCB D CHAR 2PL 480Y/277VAC, UL1077
Datasheet
10In Stock
Min.: 1
Mult.: 1

UR Circuit Breakers D-Trip 20 A 277 VAC 2 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 6A,MCB D CHAR 2PL 480Y/277VAC, UL1077
Datasheet
5Expected 12/14/2026
Min.: 1
Mult.: 1

UR 6 A 277 VAC 2 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 30A,MCB C CHAR 3PL 480Y/277VAC, UL1077
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

UR 30 A 277 VAC 3 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 1 POLE, 277VAC UL1077
Datasheet
115Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 10 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 12A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
35Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 12 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 13A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
15Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 13 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 16A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
1Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 16 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 1A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
19Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 1 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 20A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
80Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 20 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 30A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
30Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 30 A 277 VAC 1 Pole - 25 C + 55 C Non-Illuminated