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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Qty. RoHS ECAD Model Series
Product
Type
Current Rating
Voltage Rating AC
Number of Poles
Actuator Type
Minimum Operating Temperature
Maximum Operating Temperature
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 Handle - 25 C + 55 C Non-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 Handle - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 2C60UR, 60A, MCB, C CHAR
Datasheet
1In Stock
1On Order
Min.: 1
Mult.: 1
UR 60 A 277 VAC 2 Pole Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 6A,MCB D CHAR 1 PL, 277VAC, UL1077
Datasheet
3In Stock
Min.: 1
Mult.: 1

UR 6 A 277 VAC 1 Pole Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 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 Handle - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 1A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 1
Mult.: 1

UR 1 A 277 VAC 1 Pole Handle - 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 Handle - 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 Handle - 25 C + 55 C Non-Illuminated
Altech Circuit Breakers 32A,MCB B CHAR 1 PL, 277VAC, UL1077
Datasheet
37Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

UR 32 A 277 VAC 1 Pole Handle - 25 C + 55 C Non-Illuminated