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: 162,061
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
ABB Circuit Breakers UL489 MCB 2P C 0.5A 480/277 3In Stock
3Expected 01/03/2027
$144.10
$114.15
$104.43
$95.70
Min.: 1
Mult.: 1
SU200M Circuit Breakers 500 mA 2 Pole
ABB Circuit Breakers MCB SU200MR RTT 2P K 4A BCP 2In Stock
3On Order
$146.99
$127.84
$116.91
$101.53
Min.: 1
Mult.: 1
SU200MR Circuit Breakers 4 A 2 Pole
ABB Circuit Breakers MCB SU200MR RTT 2P K 5A BCP 9In Stock
$161.98
$141.28
$129.20
$115.50
Min.: 1
Mult.: 1
SU200MR Circuit Breakers 5 A 2 Pole
IDEC Circuit Breakers Circuit Protector 30A 3In Stock
$32.43
$26.71
$25.29
$23.57
Min.: 1
Mult.: 1
NRA Circuit Breakers Magnetic 30 A 250 VAC 65 VDC 1 Pole Lever - 40 C + 85 C Non-Illuminated
IDEC Circuit Breakers Circuit Breaker 1In Stock
$48.77
$40.45
$37.32
$31.71
Min.: 1
Mult.: 1
NRB Circuit Breakers 7.5 A 250 VAC 65 VDC 1 Pole Lever - 40 C + 85 C Non-Illuminated


IDEC Circuit Breakers Circuit Protector 34In Stock
$19.64
$19.31
$15.23
$14.25
Min.: 1
Mult.: 1
NRF Circuit Breakers 250 VAC 32 VDC 1 Pole - 10 C + 60 C
IDEC Circuit Breakers PCB MOUNT C.B. 1In Stock
14Expected 16/11/2026
$12.95
$12.30
$11.91
$9.16
Min.: 1
Mult.: 1
NRP Circuit Breakers Thermal 2 A 250 VAC 32 VDC 1 Pole Push to Reset - 10 C + 50 C Non-Illuminated
E-T-A Circuit Breakers Single or multipole hydraulic-magnetic circuit breakers with trip-free-mechanism and toggle actuation. A choice of switching characteristics ensures suitability for a wide range of applications. Industry standard dimensions and panel 2In Stock
$338.69
$280.72
$252.83
$232.63
Min.: 1
Mult.: 1
8345 Hydraulic Magnetic Circuit Breakers Hydraulic Magnetic 60 A 240 VAC, 415 VAC 80 VDC 3 Pole Toggle - 40 C + 85 C Non-Illuminated


E-T-A Circuit Breakers AC PEM, w/ 1 pole , 5A, pushbutton w/ white trip band, C14 inlet, pre-wired 9In Stock
$32.56
$27.01
$24.92
$20.64
Min.: 1
Mult.: 1
Thermal Circuit Breakers Overcurrent Protection 5 A 250 VAC 28 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated Bulk
E-T-A Circuit Breakers Single pole compact high performance thermal circuit breaker with tease-free, trip-free, snap action mechanism and push/pull on/off manual actuation (M-type TO CBE to EN 60934). An indicator band on the push button clearly shows the tripped/off posit 3In Stock
$181.60
$137.87
$116.78
Min.: 1
Mult.: 1
482 Thermal Circuit Breakers Thermal 10 A 125 VAC 28 VDC 1 Pole Push-Pull - 55 C + 75 C Non-Illuminated
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 7In Stock
$64.34
$55.28
$46.98
$40.74
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 protection of motors 9In Stock
$61.60
$51.11
$45.86
$41.22
$36.69
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection Rocker


E-T-A Circuit Breakers Single pole high performance thermal circuit breaker, with push-to-reset tease free, trip-free snap action mechanism (R-type TO CBE to EN 60934). Designed for threadneck panel mounting and for applications with a high fault current sw 5In Stock
$95.27
$79.70
$68.22
$61.50
Min.: 1
Mult.: 1
4130 Thermal Circuit Breakers Thermal Magnetic Push-Pull
E-T-A Circuit Breakers Single pole high performance thermal circuit breaker with tease-free, trip-free, snap action mechanism and push/pull on/off manual actuation (M-type TO CBE to EN 60934). An indicator band on the push button clearly shows the tripped/off position. Thr 1In Stock
4Expected 24/02/2027
$160.18
$121.62
$103.00
Min.: 1
Mult.: 1
413 Thermal Circuit Breakers Thermal Magnetic Push-Pull
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 3In Stock
$44.50
$36.92
$31.55
$29.46
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection 6 A 240 VAC 50 VDC 2 Pole Rocker - 30 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Single and multipole magnetic circuit breakers with trip-free mechanism and toggle actuation. A choice of fast magnetic only or hydraulically delayed switching characteristics (S-type MO or HM CBE to EN 60934) ensures suitability for 7In Stock
$112.44
$93.24
$77.00
$73.72
$71.43
Min.: 1
Mult.: 1
8340-F Hydraulic Magnetic Circuit Breakers Thermal Magnetic 10 A 240 VAC, 415 VAC 80 VDC 1 Pole Toggle - 40 C + 85 C Non-Illuminated
E-T-A Circuit Breakers AC PEM, w/ recessed 1 pole , 5A, pb w/ white trip band, C14 inlet, pre-wired 5In Stock
$32.38
$26.86
$24.78
$20.53
Min.: 1
Mult.: 1
Thermal Circuit Breakers Overcurrent Protection 5 A 250 VAC 28 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers MoQ=10 1077, 1p, DIN, 80VDC Med Delay, 8A 5In Stock
$71.00
$58.90
$54.57
$49.61
Min.: 1
Mult.: 1
8340-T Hydraulic Magnetic Circuit Breakers Thermal Magnetic Toggle
E-T-A Circuit Breakers AC PEM, w/ 2 pole , 15A, black rocker, C20 inlet, pre-wired 6In Stock
$46.13
$38.27
$35.31
$30.00
Min.: 1
Mult.: 1
Thermal Circuit Breakers Overcurrent Protection 15 A 240 VAC 50 VDC 2 Pole Rocker - 30 C + 60 C Non-Illuminated
E-T-A Circuit Breakers AC PEM, w/ 2 pole , 6A, white rocker, C14 std filtered inlet, pre-wired 8In Stock
$67.78
$56.23
$51.87
$42.93
Min.: 1
Mult.: 1
Thermal Circuit Breakers Overcurrent Protection 6 A 240 VAC 50 VDC 2 Pole Rocker - 30 C + 60 C Non-Illuminated
Weidmuller Circuit Breakers QL-A-1-13-DM-KM-5.0 3In Stock
$101.91
$83.44
$70.94
$70.31
Min.: 1
Mult.: 1
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 1In Stock
$95.34
$83.27
$57.85
$50.85
Min.: 1
Mult.: 1
IAL/IDL/IML/IUL Circuit Breakers Hydraulic Magnetic 5 A 250 VAC 80 VDC 1 Pole Handle - 40 C + 85 C Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 1In Stock
$55.55
$48.54
$33.75
$29.65
Min.: 1
Mult.: 1
Circuit Breakers Hydraulic Magnetic 10 A 240 VAC 80 VDC 1 Pole Toggle - 40 C + 85 C Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 1In Stock
$165.42
$144.54
$100.44
$88.22
Min.: 1
Mult.: 1
IAL/IDL/IML/IUL Circuit Breakers Hydraulic Magnetic 50 A 2 Pole Handle Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr Hyd Mag 2In Stock
$110.94
$96.94
$67.37
$59.17
Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Hydraulic Magnetic 20 A 2 Pole Handle - 40 C + 85 C Non-Illuminated