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.
More...


Please view our large selection of circuit breakers below.

Results: 151,449
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


Weidmuller Circuit Breakers CB4201-10, 15.0A/TS35 88In Stock
Min.: 1
Mult.: 1

CB4201 AC
Phoenix Contact Circuit Breakers CBMC E4 24DC/1-4A NO 141In Stock
Min.: 1
Mult.: 1

CBMC Circuit Breakers Electronic 16 A 24 VDC 4 Pole - 25 C + 60 C Illuminated


Phoenix Contact Circuit Breakers CBMC E4 24DC/1-4A+ IOL 85In Stock
Min.: 1
Mult.: 1

Circuit Breakers Electronic 1 A to 4 A 24 VDC 4 Pole - 25 C + 60 C Illuminated
Eaton Electrical Circuit Breakers EG 3P 80A adj therm 18kA CB w/end cap 1In Stock
Min.: 1
Mult.: 1
TE Connectivity / P&B Circuit Breakers W52-A162A1-8=CKTBKR,THERM,ROCK,QC.250RED OPAQUE 250VAC 499In Stock
1,000Expected 2026/12/21
Min.: 1
Mult.: 1

W52 Circuit Breakers Thermal 8 A 250 VAC 1 Pole 0 C + 50 C Non-Illuminated


Phoenix Contact Circuit Breakers CBM E4 24DC/0.5-10A NO-R 134In Stock
Min.: 1
Mult.: 1

Circuit Breakers Electronic 40 A 24 VDC 4 Pole - 25 C + 70 C Non-Illuminated Bulk
Phoenix Contact Circuit Breakers CBMC E4 24DC/1-10ANO 398In Stock
Min.: 1
Mult.: 1

CBMC Circuit Breakers Electronic 40 A 24 VDC 4 Pole - 25 C + 60 C Illuminated


TE Connectivity / P&B Circuit Breakers 10A 2-P Illum Amber P1 & P2 Trip QC 210In Stock
Min.: 1
Mult.: 1

W33 Circuit Breakers Thermal 10 A 250 VAC 50 VDC 2 Pole - 20 C + 60 C Illuminated


TE Connectivity / P&B Circuit Breakers 7A PUSH TO RESET 8,469In Stock
Min.: 1
Mult.: 1

W28 Thermal Circuit Breakers Thermal Magnetic 7 A 250 VAC 32 VDC 1 Pole - 20 C + 60 C Non-Illuminated Tray
AIRPAX Circuit Breakers 2In Stock
Min.: 1
Mult.: 1
Schneider Electric Circuit Breakers MotBreak GV4PE Therm/Mag 115A 50kA Elink 1In Stock
Min.: 1
Mult.: 1
GV


E-T-A Circuit Breakers Single pole, thermal miniaturised circuit breaker designed for automotive applications. Fits into fuse blocks designed to ISO 8820-3, Type F. Automatic reset (for DC 12 V only) and open circuit (modified reset to SAE) version optional. Open circuitve 488In Stock
Min.: 1
Mult.: 1

1620 Miniature Circuit Breakers Automotive 7.5 A 24 VDC 1 Pole - 40 C + 85 C Non-Illuminated
E-T-A Circuit Breakers Single pole thermal-magnetic circuit breakers with tease-free, trip-free, press-to-reset, snap action mechanism (R-type TM CBE to EN 60934; M-type with manual release (-H). Available with fast acting and standard magnetic tripping cha 69In Stock
Min.: 1
Mult.: 1

3400 Thermal Circuit Breakers Thermal Magnetic
ABB Circuit Breakers XT4H 250 TMF 250-2500 3P F F UL/CSA 2In Stock
Min.: 1
Mult.: 1
SACE Tmax XT
ABB Circuit Breakers F204 63A 30MA 110V PB TEST VOLTAGE 4In Stock
Min.: 1
Mult.: 1
F200


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 suite 39In Stock
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection 2.5 A 240 VAC 50 VDC 2 Pole - 30 C + 60 C Illuminated
Square D Circuit Breakers MOLDED CASE CIRCUIT BREAKER 600V 150A 1In Stock
Min.: 1
Mult.: 1
HDF


E-T-A Circuit Breakers 508, 1P, DM, 48VDC, N/O, 10A 41In Stock
90Expected 2026/09/25
Min.: 1
Mult.: 1
ESX10-TC Circuit Breakers Electronic 10 A 48 VDC 1 Pole - 25 C + 60 C Illuminated
ABB Circuit Breakers MCB S800S 2P C 20A 3In Stock
Min.: 1
Mult.: 1
Circuit Breakers 20 A 2 Pole
Siemens Circuit Breakers BRKR 3VA51 3P 40A 25KA FTFM 5In Stock
Min.: 1
Mult.: 1
3VA Thermal Magnetic Circuit Breakers System Protection 40 A 690 VAC 500 VDC 3 Pole - 25 C + 70 C Non-Illuminated
Schneider Electric Circuit Breakers NSX100H 70kA AC 3P3D 100A 2.2 1In Stock
Min.: 1
Mult.: 1
C10
Square D Circuit Breakers MOLDED CASE CIRCUIT BREAKER 600V 90A 1In Stock
Min.: 1
Mult.: 1
HGF


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 40In Stock
50Expected 2026/09/07
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection 16 A 240 VAC 50 VDC 2 Pole - 30 C + 60 C Non-Illuminated
AIRPAX Circuit Breakers Cir Brkr,HydMag 19In Stock
Min.: 1
Mult.: 1
Siemens Circuit Breakers BRKR 3VA52 3P 250A 35KA FTFM 1In Stock
Min.: 1
Mult.: 1
3VA Thermal Magnetic Circuit Breakers System Protection 250 A 690 VAC 750 VDC 3 Pole - 25 C + 70 C Non-Illuminated