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: 151 393
Select Image Part # Mfr. Description Datasheet Availability Pricing (EUR) 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
Siemens Circuit Breakers MSP S2 CLASS 10 32-40A SCREW 3In Stock
491,32 €
419,42 €
386,49 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 40 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers CIRCUIT-BREAKER S0 25A NO OVERLOAD 3In Stock
329,78 €
308,34 €
301,99 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Starter Combination 25 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 3P 480/277 2A 10K D-TRIP 4In Stock
193,96 €
175,00 €
162,71 €
145,24 €
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 2 A 277 VAC, 480 VAC 60 VDC 3 Pole Lever - 25 C + 55 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 74In Stock
19,51 €
15,56 €
14,69 €
12,60 €
Min.: 1
Mult.: 1
Thermal Circuit Breakers Overcurrent Protection 1 A 240 VAC 48 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Miniaturised single pole rocker switch/thermal circuit breaker combining ON/OFF switching and extremely fast overload performance in a single component (S-type TO CBE to EN 60934/IEC 934). Under overload conditions an internal neon (f 76In Stock
20,69 €
16,34 €
14,99 €
13,01 €
Min.: 1
Mult.: 1
1410-F1 Circuit Breakers Miniature 5 A 240 VAC 28 VDC 1 Pole Rocker - 20 C + 70 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 36In Stock
24,30 €
22,90 €
20,92 €
18,65 €
Min.: 1
Mult.: 1
2-5700 Thermal Circuit Breakers Overcurrent Protection 20 A 250 VAC 28 VDC 1 Pole Push to Reset - 20 C + 60 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 pro 35In Stock
39,10 €
32,44 €
25,40 €
23,13 €
Min.: 1
Mult.: 1
3120-N Thermal Circuit Breakers Overcurrent Protection 5 A 240 VAC 50 VDC 2 Pole Rocker - 30 C + 60 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 17In Stock
69,67 €
60,97 €
53,54 €
50,44 €
Min.: 1
Mult.: 1
3400 Thermal Circuit Breakers Thermal Magnetic 15 A 240 VAC 65 VDC 1 Pole Push to Reset - 30 C + 60 C Non-Illuminated
Siemens Circuit Breakers SWITCH MOTOR, MCB, 2.2...3.2A, SZ S00 6In Stock
224,35 €
200,66 €
184,70 €
155,53 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 3.2 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers MSP S0 2.8 - 4A SCREW 6In Stock
248,29 €
211,21 €
187,88 €
161,23 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 4 A 690 VAC 3 Pole Rotary - 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), threadneck mounting. Approved to CBE standard EN 60934 (IEC 60934). For higher current rati 95In Stock
13,60 €
11,28 €
10,41 €
9,56 €
Min.: 1
Mult.: 1
106-M2 Thermal Circuit Breakers Overcurrent Protection 4 A 240 VAC 48 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Single pole switch/thermal circuit breaker (S-type TO CBE to EN 60934) with tease-free, trip-free, snap action mechanism. Designed for snap-in panel mounting utilising round hole or industry standard fuse-holder cut-out dimensions. Fe 50In Stock
23,69 €
19,22 €
17,76 €
15,74 €
Min.: 1
Mult.: 1
1110-Fx12-P1M1 Circuit Breakers Thermal 6 A 250 VAC 50 VDC 1 Pole Push to Reset - 20 C + 60 C Non-Illuminated
E-T-A Circuit Breakers Single, two and three pole magnetic circuit breakers with trip-free mechanism and push/pull on/off manual actuation. A choice of fast magnetic only or hydraulically delayed switching characteristics (Stype MO or HM CBE to EN 60934) en 13In Stock
189,19 €
156,81 €
144,54 €
119,49 €
Min.: 1
Mult.: 1
8340-G Hydraulic Magnetic Circuit Breakers Thermal Magnetic 20 mA 240 VAC, 415 VAC 80 VDC 1 Pole Toggle - 40 C + 85 C Non-Illuminated


E-T-A Circuit Breakers Single pole thermal-magnetic circuit breaker with tease-free, trip-free, snap action mechanism and two button operation (M-type TM CBE to EN 60934). Designed for plug-in mounting with E-T-A sockets 17-P10-Si, 23-P10-Si, 63-P10-Si; or 42In Stock
103,08 €
83,66 €
79,24 €
77,98 €
Min.: 1
Mult.: 1
3600 Thermal Circuit Breakers Thermal Magnetic 3 A 240 VAC 65 VDC 1 Pole Pushbutton Dual - 30 C + 60 C Non-Illuminated
Siemens Circuit Breakers MSP S00 0.7-1A SCREW 6In Stock
221,48 €
184,82 €
170,87 €
141,14 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 1 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers SP S0 14-20A AUX 1NO 1NC SCREW 4In Stock
327,12 €
276,10 €
259,45 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 20 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers MSP S0 17-22A SCREW 5In Stock
302,31 €
256,25 €
230,06 €
230,05 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 22 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers MSP S0 20-25A AUX 1NO 1NC SCREW 3In Stock
385,14 €
324,97 €
305,47 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 25 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers MSP S2 CLASS 10 18-25A SCREW 3In Stock
407,65 €
342,71 €
315,80 €
Min.: 1
Mult.: 1
3RV2 Circuit Breakers Motor Protection 25 A 690 VAC 3 Pole Rotary - 20 C + 60 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 240V 6A 14K C-TRIP 6In Stock
137,54 €
119,86 €
99,18 €
97,64 €
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 6 A 240 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 3P 480/277 3A 10K D-TRIP 5In Stock
193,96 €
173,08 €
173,04 €
145,23 €
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 3 A 277 VAC, 480 VAC 60 VDC 3 Pole Lever - 25 C + 55 C Non-Illuminated
E-T-A Circuit Breakers 11In Stock
122,99 €
101,98 €
95,03 €
78,26 €
Min.: 1
Mult.: 1
8345 Hydraulic Magnetic Circuit Breakers Hydraulic Magnetic 8 A 240 VAC, 415 VAC 80 VDC 1 Pole Toggle - 40 C + 85 C Non-Illuminated
IDEC Circuit Breakers 3A CIRCUIT PROTECTOR 7In Stock
14,75 €
14,56 €
10,38 €
9,32 €
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
88,24 €
76,32 €
68,41 €
58,81 €
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
95,68 €
82,59 €
74,37 €
63,77 €
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