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CIRCUIT BREAKERS

Din Rail, Panel Mount, Base Mount Moulded Case Circuit Breakers (MCCB).  UL489, UL508 or UL1077 Approvals w/ Short Circuit Interrupt Capacity to 10kA. Manufactured by Altech, Eaton, Qualtek & Schurter.
Showing: 802 products
Altech - 1B05UR | 1B05UR UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker .5A
As Low As $
Altech - 1B1.6UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 1.6A
As Low As $
Altech - 1B10UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 10A
As Low As $
Altech - 1B10UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 10A
As Low As $
Altech - 1B12UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 12A
As Low As $
Altech - 1B13UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 13A
As Low As $
Altech - 1B13UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 13A
As Low As $
Altech - 1B15UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 15A
As Low As $
Altech - 1B15UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 15A
As Low As $
Altech - 1B16UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 16A
As Low As $
Altech - 1B16UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 16A
As Low As $
Altech - 1B1UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 1A
As Low As $
Altech - 1B1UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 1A
As Low As $
Altech - 1B2.5UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 2.5A
As Low As $
Altech - 1B20UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 20A
As Low As $
Altech - 1B20UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 20A
As Low As $
Altech - 1B25UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 25A
As Low As $
Altech - 1B2UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 2A
As Low As $
Altech - 1B2UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 2A
As Low As $
Altech - 1B3.5UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 3.5A
As Low As $
Altech - 1B30UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 30A
As Low As $
Altech - 1B30UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 30A
As Low As $
Altech - 1B32UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 32A
As Low As $
Altech - 1B32UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 32A
As Low As $
Altech - 1B3UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 3A
As Low As $
Altech - 1B3UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 3A
As Low As $
Altech - 1B40UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 40A
As Low As $
Altech - 1B40UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 40A
As Low As $
Altech - 1B4UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 4A
As Low As $
Altech - 1B4UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 4A
As Low As $
Altech - 1B50UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 50A
As Low As $
Altech - 1B50UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 50A
As Low As $
Altech - 1B5UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 5A
As Low As $
Altech - 1B5UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 5A
As Low As $
Altech - 1B60UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 60A
As Low As $
Altech - 1B60UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 60A
As Low As $
Altech - 1B63UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, 63A
As Low As $
Altech - 1B63UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 63A
As Low As $
Altech - 1B6UM | B-Trip Characteristic Miniature Molded Case Circuit Breaker, 1 Pole, 277VAC, UL508, 6A
As Low As $
Altech - 1B6UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 6A
As Low As $
Altech - 1B8UR | UL 1077 B-Trip 1 Pole Miniature Molded Case Circuit Breaker 8A
As Low As $
Altech - 1C03UM | C-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 0.3A
As Low As $
Altech - 1C05UM | C-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 0.5A
As Low As $
Altech - 1C05UR | UL 1077 C-Trip 1 Pole Miniature Molded Case Circuit Breaker .5A
As Low As $
Altech - 1C075UM | C-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 0.75A
As Low As $
Altech - 1C1.6UM | C-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 1.6A
As Low As $
Altech - 1C10UM | C-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 10A
As Low As $
Altech - 1C10UR | UL 1077 C-Trip 1 Pole Miniature Molded Case Circuit Breaker 10A
As Low As $
Altech - 1C12UR | UL 1077 C-Trip 1 Pole Miniature Molded Case Circuit Breaker 12A
As Low As $
Altech - 1C13UM | C-Trip Characteristic Miniature Molded Case Circuit Breaker 1 Pole, 277VAC, UL508, 13A
As Low As $