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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 |
|---|---|---|---|---|---|
 3RV24110BA20Circuit Breakers | Siemens | MSP S00 FOR XFRMR 0.14-0.2A SPRI | In Stock | - | |
3RV20110BA20Circuit Breakers | Siemens | Siemens Sirius 0.14 0.2 A 3P Motor Protection Circuit Breaker, 100 kA, 690 V | In Stock | - | |
 3RV24110FA10Circuit Breakers | Siemens | MSP S00 FOR XFRMR 0.35-0.5A SCRE | In Stock | - | |
 11QD3BCircuit Breakers | Siemens | STARTER-MANUALLY OP,3 PH,2.8-4FL | In Stock | - | |
 3RV20110KA100BA0Circuit Breakers | Siemens | SPECIAL TYPE CIRCUIT-BREAKER 1.2 | In Stock | - | |
11GD3BHCircuit Breakers | Siemens | STARTER-MANUALLY OP,3 PH,.45-.63 | In Stock | - | |
11QD3BHCircuit Breakers | Siemens | STARTER-MANUALLY OP,3 PH,2.8-4FL | In Stock | - | |
3RV20111HA20Circuit Breakers | Siemens | MSP S00 5.5-8A SPRING | In Stock | - | |
 3RV20210AA10Circuit Breakers | Siemens | CIRCUIT-BREAKER SCREW CONNECTION | In Stock | - | |
 3RV20314BB10Circuit Breakers | Siemens | MSP S2 CLASS 20 14-20A SCREW | In Stock | - | |
 3RV20211KA15Circuit Breakers | Siemens | MSP S0 9-12.5A SCRW W/AUX 1NO/1N | In Stock | - | |
 3RV20314EA150BA0Circuit Breakers | Siemens | SPECIAL TYPE CIRCUIT-BREAKER 32A | In Stock | - | |
 3RV20314JA100BA0Circuit Breakers | Siemens | SPECIAL TYPE CIRCUIT BREAKER 65A | In Stock | - | |
 3RV20324SA15Circuit Breakers | Siemens | MSP S2 CLASS 10 9.5-14A SCRW 1NO | In Stock | - | |
3RV20314RA10Circuit Breakers | Siemens | MSP S2 CLASS 10 70-80A SCREW | In Stock | - | |
 3RV20324RA10Circuit Breakers | Siemens | CIRCUIT BREAKER. SCREW-TYPE. 80 | In Stock | - | |
 3RV21111CA10Circuit Breakers | Siemens | MSP S00 AUTO RESET 1.8-2.5A SCRE | In Stock | - | |
 5SJ42258HG41Circuit Breakers | Siemens | MCB 5SJ4 2P 240V 25A 10K D-TRIP | In Stock | - | |
 3RV23110DC20Circuit Breakers | Siemens | CIRCUIT-BREAKER S00 0.32A NO OVE | In Stock | - | |
 3RV21314VA10Circuit Breakers | Siemens | MSP S2 CLASS 10 35-45A SCREW AUT | In Stock | - | |
 3RV23111GC10Circuit Breakers | Siemens | Siemens Sirius 6.3 A 3P Motor Protection Circuit Breaker, 100 kA, 690 V | 2 | - | |
US2:SMFF02PCircuit Breakers | Siemens | STARTER,MANUAL,TOGGLE SW W/P.LIG | In Stock | - | |
 3RV23214DC20Circuit Breakers | Siemens | CIRCUIT-BREAKER S0 25A NO OVERLO | In Stock | - | |
 3RV23324DC10Circuit Breakers | Siemens | CIRCUIT BREAKER. SZ2,25A,SCW | In Stock | - | |
11WD3BFCircuit Breakers | Siemens | STARTER-MANUALLY OP,3 PH,11-16FL | In Stock | - |
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