Circuit Breakers

 Circuit Breakers
Circuit breakers are in stock with same-day shipping at Mouser from leading manufacturers. Mouser is an authorized distributor for many circuit breaker manufacturers including ABB, Carling Technologies, Eaton, E-T-A Circuit Breakers, Phoenix Contact, Sensata, Schurter, Siemens, TE Connectivity & more.
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Please view our large selection of circuit breakers below.

Results: 151,463
Select Image Part # Mfr. Description Datasheet Availability Pricing (USD) 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 Voltage Rating DC Number of Poles Actuator Minimum Operating Temperature Maximum Operating Temperature Illuminated Packaging
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 2In Stock
Min.: 1
Mult.: 1
Snapak Thermal Circuit Breakers Thermal 15 A 1 Pole - 40 C + 85 C Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 11In Stock
Min.: 1
Mult.: 1
Snapak Thermal Circuit Breakers Thermal 12 A 2 Pole - 40 C + 85 C Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 13In Stock
Min.: 1
Mult.: 1
Snapak Thermal Circuit Breakers Thermal 1 A 2 Pole Rocker - 40 C + 85 C Non-Illuminated
AIRPAX Circuit Breakers CIRCUIT BREAKER 1In Stock
Min.: 1
Mult.: 1
Snapak Thermal Circuit Breakers Thermal 20 A 1 Pole Rocker - 40 C + 85 C Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 2In Stock
Min.: 1
Mult.: 1
Thermal Circuit Breakers Thermal 7 A 2 Pole - 40 C + 85 C
ABB Circuit Breakers MCB ST200M 3P C 2A UL1077 5In Stock
Min.: 1
Mult.: 1
ST200M Circuit Breakers 2 A 3 Pole
ABB Circuit Breakers THQB MCB 50A 10KA 3P 240V ST1 1In Stock
Min.: 1
Mult.: 1
ABB Circuit Breakers CIRCUIT BREAKER 1P 20A 120/240V 10KA 5In Stock
Min.: 1
Mult.: 1
Circuit Breakers 20 A 1 Pole
Siemens Circuit Breakers MSP S00 FOR XFRMR 1.4-2A AUX 1NO+1NC 1In Stock
Min.: 1
Mult.: 1

3RV2 Circuit Breakers Transformer Protection 2 A 690 VAC 3 Pole - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers BRKR 3VA51 3P 20A 65KA FTFM NAV 1In Stock
Min.: 1
Mult.: 1
3VA Thermal Magnetic Circuit Breakers System Protection 20 A 690 VAC 3 Pole - 25 C + 70 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 8A 10K C-TRIP 1In Stock
Min.: 1
Mult.: 1
Circuit Breakers Miniature 8 A 277 VAC, 480 VAC 60 VDC 2 Pole - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers BREAKER BQD 3P 25A 480VAC 14KA 1In Stock
Min.: 1
Mult.: 1

Circuit Breakers Thermal Magnetic 25 A 480 VAC 3 Pole + 40 C Non-Illuminated
Siemens Circuit Breakers BREAKER CQD 240VAC 1A-1B AUX SW 1In Stock
Min.: 1
Mult.: 1

Circuit Breakers Molded 240 VAC Non-Illuminated
Schneider Electric Circuit Breakers MOLDED CASE CIRCUIT BREAKER 277V 30A 1In Stock
Min.: 1
Mult.: 1
BDA
IDEC Circuit Breakers 3A CIRCUIT PROTECTOR 8In Stock
Min.: 1
Mult.: 1

NRF Circuit Breakers 250 VAC 32 VDC 1 Pole - 10 C + 60 C


E-T-A Circuit Breakers The 3120-N...4 IP65 rated thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N...4 is ideally suited for overload p 7In Stock
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection
E-T-A Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload protection of motors 6In Stock
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection 20 A 240 VAC 50 VDC 2 Pole - 30 C + 60 C Non-Illuminated
E-T-A Circuit Breakers MoQ=10 Non-Preferred Part (Build to Order) - Alternative Stocked Part Number 2210-S221-P1M1-Z241-15A 94 3In Stock
Min.: 1
Mult.: 1

2210-S2 Thermal Circuit Breakers Thermal Magnetic 16 A 250 VAC, 433 VAC 65 VDC 2 Pole - 30 C + 60 C Non-Illuminated
E-T-A Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,M1, 1NO AUX, 2.5A 6In Stock
Min.: 1
Mult.: 1

2210-T2 Thermal Circuit Breakers Thermal Magnetic
E-T-A Circuit Breakers Miniaturised single pole thermal circuit breaker with push-to-reset tease free, trip-free, snap action mechanism (R-type TO CBE to EN 60934) integral type. Approved to CBE standard EN 60934 (IEC 60934). For higher current ratings see 31In Stock
Min.: 1
Mult.: 1

104 Thermal Circuit Breakers Overcurrent Protection 500 mA 240 VAC 48 VDC 1 Pole - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Miniaturised single pole thermal circuit breaker with push-to-reset tease free, trip-free, snap action mechanism (R-type TO CBE to EN 60934) for PCB mounting. Approved to CBE standard EN 60934 (IEC 60934). For higher current ratings 9In Stock
Min.: 1
Mult.: 1

104 Thermal Circuit Breakers Overcurrent Protection 300 mA 240 VAC 48 VDC 1 Pole - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Miniaturised single pole thermal circuit breaker with push-to-reset tease free, trip-free, snap action mechanism (R-type TO CBE to EN 60934) for PCB mounting. Approved to CBE standard EN 60934 (IEC 60934). For higher current ratings 39In Stock
Min.: 1
Mult.: 1

104 Thermal Circuit Breakers Overcurrent Protection 700 mA 240 VAC 48 VDC 1 Pole - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers 508, 1P, DM, 24VDC, 2CH, ,4A/4A, No Comm CL2 18In Stock
32Expected 10/16/2026
Min.: 1
Mult.: 1
E-T-A Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,M1, 1NC AUX, 0.2A 1In Stock
Min.: 1
Mult.: 1
2210-T2 Thermal Circuit Breakers Thermal Magnetic
E-T-A Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,M1, 1NC AUX, 2A 1In Stock
Min.: 1
Mult.: 1
2210-T2 Thermal Circuit Breakers Thermal Magnetic 2 A 250 VAC, 433 VAC 65 VDC 1 Pole - 30 C + 60 C Non-Illuminated