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: 151,553
Select Image Part # Mfr. Description Datasheet Availability Pricing (SGD) 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 Type Minimum Operating Temperature Maximum Operating Temperature Illuminated Packaging
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 1In Stock
Min.: 1
Mult.: 1

Snapak Thermal Circuit Breakers Thermal 30 A 250 VAC 65 VDC 1 Pole Paddle - 40 C + 85 C Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 1In Stock
Min.: 1
Mult.: 1
Thermal Circuit Breakers Thermal 2 Pole Paddle
ABB Circuit Breakers MCB S200MUC 2P K 8A AC/DC 1In Stock
Min.: 1
Mult.: 1
Circuit Breakers 8 A 2 Pole
ABB Circuit Breakers MCB ST200M 3P K 60A UL1077 2In Stock
4Expected 7/9/2026
Min.: 1
Mult.: 1
ST200M Circuit Breakers 60 A 3 Pole
ABB Circuit Breakers UL489 MCB 1P Z 20A 480/277 15In Stock
Min.: 1
Mult.: 1
SU200M Circuit Breakers 20 A 1 Pole
ABB Circuit Breakers UL489 MCB 2P C 32A 480/277 5In Stock
Min.: 1
Mult.: 1
SU200M Circuit Breakers 32 A 2 Pole
Siemens Circuit Breakers BRKR ED2 3P 240V 20A 1In Stock
Min.: 1
Mult.: 1
Circuit Breakers Low Voltage 20 A 240 VAC 3 Pole Non-Illuminated
APC by Schneider Electric Circuit Breakers MOLDED CASE CIRCUIT BRKR 600Y/347V 40A 1In Stock
2On Order
Min.: 1
Mult.: 1
Schneider Electric Circuit Breakers TRIP UNIT NSX100 AC 3P3D 100A 2.2 1In Stock
Min.: 1
Mult.: 1

Square D Circuit Breakers MINIATURE CIRCUIT BREAKER 240V 30A 3In Stock
Min.: 1
Mult.: 1

QO Circuit Breakers Miniature 30 A 120 VAC, 240 VAC 3 Pole Lever Non-Illuminated
IDEC Circuit Breakers CIRCUIT PROTECTOR 8In Stock
Min.: 1
Mult.: 1
NRF Circuit Breakers Thermal 15 A 250 VAC 32 VDC 1 Pole - 10 C + 60 C Non-Illuminated
IDEC Circuit Breakers 3A CIRCUIT PROTECTOR 9In Stock
Min.: 1
Mult.: 1

NRF Circuit Breakers Thermal 3 A 250 VAC 32 VDC 1 Pole - 10 C + 60 C Non-Illuminated


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 8In Stock
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection Rocker
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 Rocker - 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 Toggle - 30 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) 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 Push to Reset - 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 Push to Reset - 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 Push to Reset - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers 508, 1P, DM, 24VDC, 2CH, ,4A/4A, No Comm CL2 18In Stock
32Expected 16/10/2026
Min.: 1
Mult.: 1
Push to Reset
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 Toggle
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 Toggle - 30 C + 60 C Non-Illuminated
E-T-A Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,T1, 1NC AUX, 20A 1In Stock
Min.: 1
Mult.: 1
2210-T2 Thermal Circuit Breakers Thermal Magnetic Toggle
E-T-A Circuit Breakers MoQ=10 508, 1P, DM, 48VDC, N/O, 12.5A 8In Stock
Min.: 1
Mult.: 1
ESX10-TC Circuit Breakers Electronic Slide
E-T-A Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double 1In Stock
Min.: 1
Mult.: 1

3130-F Thermal Overcurrent 15 A 240 VAC 50 VDC 1 Pole Rocker - 30 C + 60 C Illuminated
E-T-A Circuit Breakers Compact single pole thermal circuit breaker with push-to-reset, tease free, trip free, snap action mechanism and separate (colour coded) manual release. Combining full feature circuit breaker protection and convenience with low cost o 45In Stock
Min.: 1
Mult.: 1

1170 Miniature Circuit Breakers Automotive 8 A 28 VDC 1 Pole Push to Reset - 40 C + 85 C Non-Illuminated