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Circuit Breakers
(16237 results)A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
| Part # | Manufacturer | Description | Availability | Pricing | Quantity |
|---|---|---|---|---|---|
 111D3BFCircuit Breakers | Siemens | SWITCH-MANUALLY OP,3 PH,1 AMP,N1 | In Stock | - | |
 3RV24114AA100BA0Circuit Breakers | Siemens | SPECIAL TYPE CIRCUIT BREAKER 16A | In Stock | - | |
11MD3BCircuit Breakers | Siemens | STARTER-MANUALLY OP,3 PH,1.4-2FL | In Stock | - | |
11SD3BDCircuit Breakers | Siemens | STARTER-MANUALLY OP,3 PH,4.5-6.3 | In Stock | - | |
11ND3BDCircuit Breakers | Siemens | STARTER-MANUALLY OP,3 PH,1.8-2.5 | In Stock | - | |
 3RV20114AA100BA0Circuit Breakers | Siemens | CIRCUIT-BREAKER SCREW CONNECTION | In Stock | - | |
 3RV20210DA10Circuit Breakers | Siemens | CIRCUIT-BREAKER SCREW CONNECTION | 1 | - | |
 3RV20211FA25Circuit Breakers | Siemens | MSP S0 3.5-5A SPRG W/AUX 1NO/1NC | In Stock | - | |
 3RV20314RA15Circuit Breakers | Siemens | BREAKER,MSP S2 CLASS 10 70-80A S | In Stock | - | |
MRSKG11BCircuit Breakers | Siemens | MANUAL SW,TOGGLE,2-P,230VAC,NEMA | In Stock | - | |
MMSKWN2Circuit Breakers | Siemens | MANUAL SW,TOGGLE,3-P,NEMA TYPE 3 | In Stock | - | |
 3RV21111JA10Circuit Breakers | Siemens | MSP S00 AUTO RESET 7-10A SCREW | In Stock | - | |
3RV21111HA10Circuit Breakers | Siemens | MSP S00 AUTO RESET 5.5-8A SCREW | In Stock | - | |
 3RV21314EA10Circuit Breakers | Siemens | MSP S2 CLASS 10 22-32A SCREW AUT | In Stock | - | |
 3RV23111JC20Circuit Breakers | Siemens | CIRCUIT-BREAKER S00 10A NO OVERL | In Stock | - | |
 3RV23110AC10Circuit Breakers | Siemens | CIRCUIT-BREAKER S00 0.16A NO OVE | In Stock | - | |
 3RV23211DC10Circuit Breakers | Siemens | CIRCUIT-BREAKER S0 3.2A NO OVERL | In Stock | - | |
 5SJ43358HG41Circuit Breakers | Siemens | MCB 5SJ4 3P 240V 35A 10K D-TRIP | In Stock | - | |
3RV20210FA10Circuit Breakers | Siemens | CIRCUIT-BREAKER SCREW CONNECTION | In Stock | - | |
 5SJ41168HG41Circuit Breakers | Siemens | MCB 5SJ4 1P 240V 16A 14K D-TRIP | In Stock | - | |
 3RV20314DB15Circuit Breakers | Siemens | MSP S2 CLASS 20 18-25A SCREW 1NO | In Stock | - | |
3RV20111FA100BA0Circuit Breakers | Siemens | MSP S00 3.5-5A SCREW, -50C RATED | In Stock | - | |
3RV20211EA25Circuit Breakers | Siemens | MSP S0 2.8-4A SPRG W/AUX 1NO/1NC | In Stock | - | |
 3RV20211AA15Circuit Breakers | Siemens | MSP S0 1.1-1.6A SCRW W/AUX 1NO/1 | In Stock | - | |
3RV20314BA15Circuit Breakers | Siemens | MSP S2 CLASS 10 14-20A SCREW 1NO | In Stock | - |
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