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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	Series	Product	Type	Current Rating	Voltage Rating AC	Voltage Rating DC	Number of Poles	Actuator	Minimum Operating Temperature	Maximum Operating Temperature	Illuminated	Packaging
Circuit Breakers 1pole 20Amp Toggle Mag circuit breaker W67-X2Q12-20 TE Connectivity / P&B 1: $77.09 123In Stock	Mfr. Part No. W67-X2Q12-20 Mouser Part No 655-W67-X2Q12-20	TE Connectivity / P&B	Circuit Breakers 1pole 20Amp Toggle Mag circuit breaker	Datasheet	123In Stock	$77.09 $72.08 $69.48 $68.25	Min.: 1 Mult.: 1		W6	Hydraulic Magnetic Circuit Breakers	Hydraulic Magnetic	20 A	277 VAC		1 Pole	Toggle	- 40 C	+ 85 C	Non-Illuminated	Tray
Circuit Breakers CIRCUIT BREAKER SWITCH 50A BLK W91-X152-50 TE Connectivity / P&B 1: $80.68 128In Stock	Mfr. Part No. W91-X152-50 Mouser Part No 655-W91-X152-50	TE Connectivity / P&B	Circuit Breakers CIRCUIT BREAKER SWITCH 50A BLK	Datasheet	128In Stock	$80.68 $72.87 $67.64 $64.00	Min.: 1 Mult.: 1		W9	Hydraulic Magnetic Circuit Breakers	Hydraulic Magnetic	50 A		65 VDC	1 Pole	Toggle	- 40 C	+ 85 C	Non-Illuminated
Circuit Breakers MSP S2 CLASS 10 49-59A SCREW 3RV20314XA10 Siemens 1: $660.87 3In Stock	Mfr. Part No. 3RV20314XA10 Mouser Part No 982-3RV20314XA10	Siemens	Circuit Breakers MSP S2 CLASS 10 49-59A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	3In Stock	$660.87 $547.27 $504.18	Min.: 1 Mult.: 1		3RV2	Circuit Breakers	Motor Protection	59 A	690 VAC		3 Pole	Rotary	- 20 C	+ 60 C	Non-Illuminated
Circuit Breakers Cir Brkr,HydMag AP1-1-51-203 AIRPAX 1: $555.08 4In Stock	Mfr. Part No. AP1-1-51-203 Mouser Part No 874-AP1-1-51-203	AIRPAX	Circuit Breakers Cir Brkr,HydMag Learn More about AIRPAX sensata ap circuit breakers	Datasheet	4In Stock	$555.08 $185.03 $160.99 View Quote	Min.: 1 Mult.: 1	No	AP	Circuit Breakers		20 A		50 VDC	1 Pole	Toggle			Non-Illuminated
Circuit Breakers Very cost effective design to meet international requirements. No exposed metal parts which are current-carrying except for terminals. R-type TO CBE to EN 60934. Units built to order. For requests under 500 pcs contact Customer Servi E-T-A 1658-A21-02-P10-10A 1658-A21-02-P10-10A E-T-A 1: $7.28 569In Stock	Mfr. Part No. 1658-A21-02-P10-10A Mouser Part No 457-1658A2102P1010A	E-T-A	Circuit Breakers Very cost effective design to meet international requirements. No exposed metal parts which are current-carrying except for terminals. R-type TO CBE to EN 60934. Units built to order. For requests under 500 pcs contact Customer Servi	Datasheet	569In Stock	$7.28 $6.93 $6.68 $5.03 View $4.12 $3.49 $3.48	Min.: 1 Mult.: 1		1658	Thermal Circuit Breakers	Overcurrent Protection	10 A	240 VAC	28 VDC	1 Pole	Push to Reset	- 20 C	+ 60 C	Non-Illuminated
Circuit Breakers W58-XA6A4A-3=CKTBKR THERM PB Q 1423695-7 TE Connectivity / P&B 1: $7.04 416In Stock	Mfr. Part No. 1423695-7 Mouser Part No 655-1423695-7	TE Connectivity / P&B	Circuit Breakers W58-XA6A4A-3=CKTBKR THERM PB Q	Datasheet	416In Stock	$7.04 $5.36 $4.72 $4.44 View $4.24 $4.06 $3.52 $3.43	Min.: 1 Mult.: 1		W58	Thermal Circuit Breakers	Thermal Magnetic	3 A	250 VAC	50 VDC	1 Pole	Push to Reset	- 20 C	+ 60 C	Non-Illuminated
Circuit Breakers 5A ROCKR ACT RED ILL W51-A121B1-5 TE Connectivity / P&B 1: $5.78 1,786In Stock	Mfr. Part No. W51-A121B1-5 Mouser Part No 655-W51-A121B1-5	TE Connectivity / P&B	Circuit Breakers 5A ROCKR ACT RED ILL	Datasheet	1,786In Stock	$5.78 $5.19 $4.69 $4.22 View $4.14 $3.78 $3.72 $3.65	Min.: 1 Mult.: 1		W51	Circuit Breakers	Thermal	5 A	125 VAC	50 VDC	1 Pole	Rocker	0 C	+ 50 C	Illuminated
Circuit Breakers Cir Brkr Hyd Mag AP116-7064-258 AIRPAX 1: $1,773.29 1In Stock	Mfr. Part No. AP116-7064-258 Mouser Part No 874-AP116-7064-258	AIRPAX	Circuit Breakers Cir Brkr Hyd Mag Learn More about AIRPAX sensata ap circuit breakers	Datasheet	1In Stock	$1,773.29 $591.12 View Quote	Min.: 1 Mult.: 1	No	AP	Circuit Breakers	Hydraulic Magnetic	20 A	250 VAC	80 VDC	3 Pole	Toggle	- 40 C	+ 100 C	Non-Illuminated
Circuit Breakers CIRCUIT BREAKER M39019/03-230S AIRPAX 1: $1,751.41 1In Stock	Mfr. Part No. M39019/03-230S Mouser Part No 874-M39019/03-230S	AIRPAX	Circuit Breakers CIRCUIT BREAKER Learn More about AIRPAX sensata ap circuit breakers	Datasheet	1In Stock	$1,751.41 $583.83 View Quote	Min.: 1 Mult.: 1	No	AP	Circuit Breakers		5 A	250 VAC	50 VDC	2 Pole	Toggle			Non-Illuminated
Circuit Breakers CIRCUIT BREAKER M39019/01-215 AIRPAX 1: $850.62 2In Stock	Mfr. Part No. M39019/01-215 Mouser Part No 874-M39019/01-215	AIRPAX	Circuit Breakers CIRCUIT BREAKER Learn More about AIRPAX sensata ap circuit breakers	Datasheet	2In Stock	$850.62 $283.57 $246.70 View Quote	Min.: 1 Mult.: 1	No	AP	Circuit Breakers		20 A	250 VAC	50 VDC	1 Pole	Toggle			Non-Illuminated
Circuit Breakers CIRCUIT BREAKER M39019/01-212 AIRPAX 1: $850.62 10In Stock	Mfr. Part No. M39019/01-212 Mouser Part No 874-M39019/01-212	AIRPAX	Circuit Breakers CIRCUIT BREAKER Learn More about AIRPAX sensata ap circuit breakers	Datasheet	10In Stock	$850.62 $283.57 $246.70 View Quote	Min.: 1 Mult.: 1	No	AP	Circuit Breakers	Hydraulic Magnetic	750 mA	240 VAC	50 VDC	1 Pole	Toggle	- 40 C	+ 100 C	Non-Illuminated
Circuit Breakers CIRCUIT BREAKER M39019/03-321S AIRPAX 1: $1,846.20 31In Stock	Mfr. Part No. M39019/03-321S Mouser Part No 874-M39019/03-321S	AIRPAX	Circuit Breakers CIRCUIT BREAKER Learn More about AIRPAX sensata ap circuit breakers	Datasheet	31In Stock	$1,846.20 $1,758.30	Min.: 1 Mult.: 1	No	AP	Circuit Breakers		5 A	250 VAC	50 VDC	2 Pole	Toggle			Non-Illuminated
Circuit Breakers Circuit Protector 30A NRAS1100-30A-AD IDEC 1: $29.34 4In Stock	Mfr. Part No. NRAS1100-30A-AD Mouser Part No 199-NRAS110030AAD	IDEC	Circuit Breakers Circuit Protector 30A	Datasheet	4In Stock	$29.34 $24.14 $22.66 $21.09 View $20.06 $19.57 $19.18 Quote	Min.: 1 Mult.: 1		NRA	Circuit Breakers	Magnetic	30 A	250 VAC	65 VDC	1 Pole	Lever	- 40 C	+ 85 C	Non-Illuminated
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 3120-N324-H7T1-W01D-X3120-U0200M-16A E-T-A 1: $102.60 6In Stock	Mfr. Part No. 3120-N324-H7T1-W01D-X3120-U0200M-16A Mouser Part No 457-01DX3120U0200M16	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 Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	6In Stock	$102.60 $88.74 $79.55 $68.38 View $63.83 Quote	Min.: 1 Mult.: 1		3120-N	Thermal Circuit Breakers	Overcurrent Protection					Rocker
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 3120-N521-H7T1-W02L-X3120-U0203M-20A E-T-A 1: $111.25 6In Stock	Mfr. Part No. 3120-N521-H7T1-W02L-X3120-U0203M-20A Mouser Part No 457-02LX3120U0203M20	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 Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	6In Stock	$111.25 $96.04 $86.48 $74.15 View $69.21 Quote	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
Circuit Breakers MoQ=10 Non-Preferred Part (Build to Order) - Alternative Stocked Part Number 2210-S221-P1M1-Z241-15A 94 2210-S221-P1M1-H111-16A E-T-A 1: $246.93 3In Stock	Mfr. Part No. 2210-S221-P1M1-H111-16A Mouser Part No 457-0S221P1M1H11116A	E-T-A	Circuit Breakers MoQ=10 Non-Preferred Part (Build to Order) - Alternative Stocked Part Number 2210-S221-P1M1-Z241-15A 94 Learn More about E-T-A e t a 2210 s2 thermal magnetic circuit breakers	Datasheet	3In Stock	$246.93 $176.36 $171.32 $169.60	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
Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,M1, 1NO AUX, 2.5A 2210-T210-K0M1-H121-2.5A E-T-A 1: $60.70 5In Stock	Mfr. Part No. 2210-T210-K0M1-H121-2.5A Mouser Part No 457-0T210K0M1H12125A	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,M1, 1NO AUX, 2.5A Learn More about E-T-A e t a 2210 t2 thermal magnetic circuit breakers	Datasheet	5In Stock	$60.70 $50.35 $41.73 $37.51 View $36.52 $35.33	Min.: 1 Mult.: 1		2210-T2	Thermal Circuit Breakers	Thermal Magnetic					Toggle
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 104-P30-0.5A E-T-A 1: $22.68 31In Stock	Mfr. Part No. 104-P30-0.5A Mouser Part No 457-104-P30-0.5A	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	Datasheet	31In Stock	$22.68 $20.64 $18.92 $14.34 View $13.44 $12.53 $11.95 $11.91 Quote	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
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 104-PR-0.3A E-T-A 1: $22.68 9In Stock	Mfr. Part No. 104-PR-0.3A Mouser Part No 457-104-PR-0.3A	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	Datasheet	9In Stock	$22.68 $20.64 $18.92 $14.34 View $13.44 $12.53 $11.95 $11.91 Quote	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
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 104-PR3-0.7A E-T-A 1: $22.68 38In Stock	Mfr. Part No. 104-PR3-0.7A Mouser Part No 457-104-PR3-0.7A	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	Datasheet	38In Stock	$22.68 $20.64 $18.92 $14.34 View $13.44 $12.53 $11.95 $11.91 Quote	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
Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,M1, 1NC AUX, 0.2A 2210-T210-K0M1-H131-0.2A E-T-A 1: $60.70 1In Stock	Mfr. Part No. 2210-T210-K0M1-H131-0.2A Mouser Part No 457-10K0M1H13102	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,M1, 1NC AUX, 0.2A Learn More about E-T-A e t a 2210 t2 thermal magnetic circuit breakers	Datasheet	1In Stock	$60.70 $49.41 $47.23 $44.13 View $43.01 $41.61 Quote	Min.: 1 Mult.: 1		2210-T2	Thermal Circuit Breakers	Thermal Magnetic					Toggle
Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,T1, 1NC AUX, 20A 2210-T210-K0T1-H131-20A E-T-A 1: $54.80 1In Stock	Mfr. Part No. 2210-T210-K0T1-H131-20A Mouser Part No 457-10K0T1H13120	E-T-A	Circuit Breakers 1077, 1P, DM, 277VAC/65VDC,T1, 1NC AUX, 20A Learn More about E-T-A e t a 2210 t2 thermal magnetic circuit breakers	Datasheet	1In Stock	$54.80 $49.05 $47.53 $45.73 View $45.28 $44.37 Quote	Min.: 1 Mult.: 1		2210-T2	Thermal Circuit Breakers	Thermal Magnetic					Toggle
Circuit Breakers MoQ=10 508, 1P, DM, 48VDC, N/O, 12.5A ESX10-TC-101-DC48V-12.5A E-T-A 1: $111.96 4In Stock	Mfr. Part No. ESX10-TC-101-DC48V-12.5A Mouser Part No 457-10TC101DC48V125A	E-T-A	Circuit Breakers MoQ=10 508, 1P, DM, 48VDC, N/O, 12.5A	Datasheet	4In Stock	$111.96 $86.19 $75.86 $72.75 View $70.39 Quote	Min.: 1 Mult.: 1		ESX10-TC	Circuit Breakers	Electronic					Slide
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 1170-22-8A E-T-A 1: $20.50 45In Stock	Mfr. Part No. 1170-22-8A Mouser Part No 457-1170-22-8A	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	Datasheet	45In Stock	$20.50 $18.47 $16.93 $13.17 View $11.68 $10.89	Min.: 1 Mult.: 1		1170	Miniature Circuit Breakers	Automotive	8 A		28 VDC	1 Pole	Push to Reset	- 40 C	+ 85 C	Non-Illuminated
Circuit Breakers Single pole thermal circuit breaker with push-to-reset, tease-free, trip-free, snap action mechanism (R-type TO CBE to EN 60934; M-type when fitted with optional manual release feature). Available in versions for plug-in or integral m 127-T12-H-15A E-T-A 1: $57.68 21In Stock	Mfr. Part No. 127-T12-H-15A Mouser Part No 457-127-T12-H-15A	E-T-A	Circuit Breakers Single pole thermal circuit breaker with push-to-reset, tease-free, trip-free, snap action mechanism (R-type TO CBE to EN 60934; M-type when fitted with optional manual release feature). Available in versions for plug-in or integral m	Datasheet	21In Stock	$57.68 $47.85 $44.53 $36.77 View $33.52 $31.70 Quote	Min.: 1 Mult.: 1		127	Thermal Circuit Breakers	Overcurrent Protection	15 A	250 VAC	28 VDC	1 Pole	Push to Reset	- 20 C	+ 60 C	Non-Illuminated