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: 162,060
Select Image Part # Mfr. Description Datasheet Availability Pricing (GBP) 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 1In Stock
£15.73
Min.: 1
Mult.: 1
Snapak Thermal Circuit Breakers Thermal 5 A 1 Pole Paddle
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 1In Stock
£15.09
Min.: 1
Mult.: 1
Snapak Thermal Circuit Breakers Thermal Paddle
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 1In Stock
£14.57
Min.: 1
Mult.: 1
Thermal Circuit Breakers Thermal 5 A 250 VAC 65 VDC 1 Pole Paddle - 40 C + 85 C Non-Illuminated
ABB Circuit Breakers A1A 100 TMF 40-400 2P F F UL 3In Stock
£200.07
£181.10
£168.93
£153.06
Min.: 1
Mult.: 1
ABB Circuit Breakers RCD F200 2P 40A 30MA AP-R 1In Stock
£648.78
Min.: 1
Mult.: 1
F200
ABB Circuit Breakers MCB ST200M 1P C 8A UL1077
Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK
4In Stock
£42.72
£32.74
£30.38
£27.54
Min.: 1
Mult.: 1
ST200M Circuit Breakers 8 A 1 Pole
ABB Circuit Breakers MCB ST200M 3P K 15A UL1077
Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK
4In Stock
6Expected 04/01/2027
£147.01
£117.20
£108.45
£99.47
Min.: 1
Mult.: 1
ST200M Circuit Breakers 15 A 3 Pole
ABB Circuit Breakers MCB SU200ML 3P K 15A UL 489
Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK
6In Stock
£166.27
£145.02
£132.63
£118.55
Min.: 1
Mult.: 1
SU200ML Circuit Breakers 15 A 3 Pole
ABB Circuit Breakers XT1N 125 TMF 25-500 3P F F UL/CSA
Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK
3In Stock
£329.35
£285.60
Min.: 1
Mult.: 1
SACE Tmax XT
Siemens Circuit Breakers BRKR 3VA51 2P 40A 25KA FTFM NUT 1In Stock
£590.19
£537.91
£525.72
Min.: 1
Mult.: 1
3VA Thermal Magnetic Circuit Breakers System Protection 40 A 415 VAC 250 VDC 2 Pole Paddle - 25 C + 70 C Non-Illuminated
Siemens Circuit Breakers RKR 3VA51 3P 15A 65KA FTAM 1In Stock
£815.77
Min.: 1
Mult.: 1
3VA Thermal Magnetic Circuit Breakers System Protection 15 A 690 VAC 500 VDC 3 Pole Paddle - 25 C + 70 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 1A 14K D-TRIP 5In Stock
£66.38
£56.47
£53.53
£49.58
Min.: 1
Mult.: 1
Circuit Breakers Miniature 1 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers BREAKER 55A 1P 120V 10K BL 5In Stock
£68.50
£59.42
£57.85
£51.93
Min.: 1
Mult.: 1
Schneider Electric Circuit Breakers MOLDED CASE CIRCUIT BRKR 600Y/347V 60A 1In Stock
£735.01
Min.: 1
Mult.: 1
BDF
IDEC Circuit Breakers Circuit Protector 2A
Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK
3In Stock
£24.35
£20.21
£18.99
£17.70
Min.: 1
Mult.: 1
NRA Circuit Breakers Magnetic 2 A 250 VAC 65 VDC 1 Pole Lever - 40 C + 85 C Non-Illuminated
E-T-A Circuit Breakers Single pole thermal circuit breaker with press-to-reset, tease-free, trip-free, snap action mechanism. Type 2-5700 can be supplied as a push-push switch/circuit breaker (R-type TO CBE to EN 60934 in press-to-reset configuration; S-typ 6In Stock
£28.77
£23.88
£19.68
£17.36
£14.60
Min.: 1
Mult.: 1
2-5700 Thermal Circuit Breakers Overcurrent Protection 2 A 250 VAC 28 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated
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 7In Stock
£21.90
£18.17
£16.63
£15.87
Min.: 1
Mult.: 1
3130-F Thermal Overcurrent 15 A 240 VAC 50 VDC 1 Pole Rocker - 30 C + 60 C Non-Illuminated
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 9In Stock
£22.69
£19.49
£15.64
£14.68
Min.: 1
Mult.: 1
3130-F Thermal Overcurrent 12 A 240 VAC 50 VDC 1 Pole Rocker - 30 C + 60 C Non-Illuminated
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 9In Stock
£22.69
£18.82
£15.41
£13.59
Min.: 1
Mult.: 1
3130-F Thermal Overcurrent 15 A 240 VAC 50 VDC 1 Pole Rocker - 30 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Single pole thermal circuit breaker with press-to-reset, tease-free, trip-free, snap action mechanism. Type 2-5700 can be supplied as a push-push switch/circuit breaker (R-type TO CBE to EN 60934 in press-to-reset configuration; S-typ 5In Stock
£28.72
£23.82
£19.76
£17.46
£14.81
Min.: 1
Mult.: 1
2-5700 Thermal Circuit Breakers Overcurrent Protection 15 A 250 VAC 28 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Single pole thermal circuit breaker with press-to-reset, tease-free, trip-free, snap action mechanism. Type 2-5700 can be supplied as a push-push switch/circuit breaker (R-type TO CBE to EN 60934 in press-to-reset configuration; S-typ 8In Stock
£26.70
£22.15
£18.60
£16.44
£14.21
Min.: 1
Mult.: 1
2-5700 Thermal Circuit Breakers Overcurrent Protection 25 A 250 VAC 28 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Single pole press-to-reset thermal circuit breaker with extremely fast overload switching performance (R-type TO CBE to EN 60934). Miniaturised construction minimises PCB real estate required. Largely temperature-insensitive.x -E. Ret 68In Stock
£13.01
£11.54
£10.58
£9.13
Min.: 1
Mult.: 1
1410-L1 Thermal Circuit Breakers Overcurrent Protection 800 mA 240 VAC 28 VDC 1 Pole Rocker - 20 C + 70 C Non-Illuminated
E-T-A Circuit Breakers Min Ord Qty 10. 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 prot 1In Stock
£28.59
£23.72
£19.67
£17.38
£16.21
Min.: 1
Mult.: 1
Thermal Circuit Breakers Overcurrent Protection Rocker
E-T-A Circuit Breakers 10 pc min. 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 protectio 4In Stock
£27.39
£24.94
£23.14
£22.51
Min.: 1
Mult.: 1
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 prot 7In Stock
20Expected 20/11/2026
£26.43
£21.92
£20.46
£17.26
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