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Circuit Breakers
Circuit breakers are available at Mouser Electronics from industry leading manufacturers.  Mouser is an authorized distributor for many circuit breaker manufacturers including Altech, Carling, Cooper Bussmann, Littelfuse, Schurter, TE Connectivity, & more. Please view our selection of circuit breakers below.
Category   Electromechanical >  Circuit Breakers

Available Filters 8,504 Matches  

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Compare up to 20 parts.
Page: Previous12345678910...341Next
Select ImageMouser Part # Mfr. Part # Mfr. Description Availability Pricing
(USD) 		Quantity RoHS Product Product Type Current Rating Voltage Rating AC Voltage Rating DC Number of Poles Actuator Type Circuit Function Series Operating Temperature Range Illuminated
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Altech 2BU16R
Enlarge		 Altech Circuit Breakers 16A B Characteristic UL 1077 2 POLE Page 2,737

 Data Sheet 		67
In Stock
1: $23.08
10: $19.74
50: $18.52
100: $18.16
250: View



Min.: 1
Mult.: 1
Circuit Protection Devices B-Trip 16 A 277 V 2 Poles Handle Supplementary Protectors R - 25 C to + 60 C No
TE Connectivity / P&B W31-X2M1G-35
Enlarge		 TE Connectivity / P&B Circuit Breakers 35A TOGGLE ACTUATOR Page 2,023

 Data Sheet 		50
In Stock
1: $28.37
10: $26.47
25: $24.82
50: $22.45
100: $17.73



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 35 A 240 V 50 V 1 Pole Toggle Series Trip W31 - 20 C to + 60 C No
TE Connectivity / P&B W33-S4B1Q-10
Enlarge		 TE Connectivity / P&B Circuit Breakers 10A 2-P Illum Amber P1 Switch P2 Trip QC Page 2,740

 Data Sheet 		43
In Stock
1: $20.81
10: $20.30
25: $18.94
50: $17.13
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 10 A 250 V 50 V 2 Poles Rocker Series Trip Overload Sensing W33 Yes
TE Connectivity / P&B W67-X2Q12-30
Enlarge		 TE Connectivity / P&B Circuit Breakers CIRCUIT BREAKER SWITCH 30A WH 64
In Stock
1: $21.84
5: $19.62
10: $18.10
25: $15.06
50: View



Min.: 1
Mult.: 1


Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 30 A 277 V 1 Pole Toggle Series Trip W6 - 40 C to + 85 C No
TE Connectivity / P&B W51-A122B1-10
Enlarge		 TE Connectivity / P&B Circuit Breakers 10A RCKR ACT RED ILL Page 2,024

 Data Sheet 		394
In Stock
1: $3.42
10: $3.19
25: $2.98
50: $2.70
100: $2.11



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 10 A 250 V 50 V 1 Pole Rocker Trip Free - Switchable W51 0 C to + 60 C Yes
TE Connectivity / P&B W23-X1A1G-30
Enlarge		 TE Connectivity / P&B Circuit Breakers 30A PUSH/PULL ACT. Page 2,023

 Data Sheet 		70
In Stock
1: $24.19
10: $23.56
25: $21.16
50: $19.15
100: $16.40



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 30 A 240 V 50 V 1 Pole Pushbutton Series Trip W23 - 20 C to + 60 C No
TE Connectivity / P&B W31-X2M1G-50
Enlarge		 TE Connectivity / P&B Circuit Breakers 50A TOGGLE ACTUATOR Page 2,023

 Data Sheet 		48
In Stock
More Info Available
1: $28.37
10: $26.47
25: $24.82
50: $22.45
100: $17.73



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 50 A 240 V 50 V 1 Pole Toggle Series Trip W31 - 20 C to + 60 C No
TE Connectivity / P&B W58-XC4C12A-10
Enlarge		 TE Connectivity / P&B Circuit Breakers 10A PUSH TO RESET ST Page 2,024

 Data Sheet 		241
In Stock
1: $5.66
10: $5.20
25: $4.75
50: $4.28
100: $3.63



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 10 A 250 V 50 V 1 Pole Pushbutton Series Trip W58 - 20 C to + 60 C No
TE Connectivity / P&B W23-X1A1G-20
Enlarge		 TE Connectivity / P&B Circuit Breakers 20A PUSH/PULL ACT. Page 2,023

 Data Sheet 		70
In Stock
1: $22.80
10: $21.28
25: $19.95
50: $18.05
100: $14.25



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 20 A 240 V 50 V 1 Pole Pushbutton Series Trip W23 - 20 C to + 60 C No
TE Connectivity / P&B W31-X2M1G-7.50
Enlarge		 TE Connectivity / P&B Circuit Breakers 7.5A TOGGLE ACTUATOR Page 2,023

 Data Sheet 		50
In Stock
1: $28.37
10: $26.47
25: $24.82
50: $22.45
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 7.5 A 240 V 50 V 1 Pole Toggle Series Trip W31 - 20 C to + 60 C No
TE Connectivity / P&B W31-X2M1G-40
Enlarge		 TE Connectivity / P&B Circuit Breakers 40A TOGGLE ACTUATOR Page 2,023

 Data Sheet 		35
In Stock
1: $30.09
10: $28.07
25: $26.31
50: $23.81
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 40 A 240 V 50 V 1 Pole Toggle Series Trip W31 - 20 C to + 60 C No
TE Connectivity / P&B W54-XB1A4A10-10
Enlarge		 TE Connectivity / P&B Circuit Breakers 10A PUSH TO RESET Page 2,023

 Data Sheet 		759
In Stock
1: $2.86
10: $2.66
25: $2.49
50: $2.26
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 10 A 250 V 1 Pole Pushbutton Series Trip W54 0 C to + 60 C No
TE Connectivity / P&B W28-XQ1A-7
Enlarge		 TE Connectivity / P&B Circuit Breakers 7A PUSH TO RESET Page 2,023

 Data Sheet 		605
In Stock
1: $2.93
10: $2.73
25: $2.56
50: $2.31
100: $1.83



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 7 A 250 V 32 V 1 Pole Pushbutton Series Trip W28 - 20 C to + 60 C No
TE Connectivity / P&B W28-XQ1A-12
Enlarge		 TE Connectivity / P&B Circuit Breakers 12A PUSH TO RESET Page 2,023

 Data Sheet 		485
In Stock
1: $2.93
10: $2.73
25: $2.56
50: $2.31
100: $1.83



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 12 A 250 V 32 V 1 Pole Pushbutton Series Trip W28 - 20 C to + 60 C No
TE Connectivity / P&B W23-X1A1G-50
Enlarge		 TE Connectivity / P&B Circuit Breakers 50A PUSH/PULL ACT. Page 2,023

 Data Sheet 		83
In Stock
1: $22.80
10: $21.28
25: $19.95
50: $18.05
100: $14.25



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 50 A 240 V 50 V 1 Pole Pushbutton Series Trip W23 - 20 C to + 60 C No
Littelfuse 0812005.ZXST
Enlarge		 Littelfuse Circuit Breakers 5A STUD TYPE CIRCUIT BREAKER Data Sheet 193
In Stock
1: $7.39
10: $7.02
100: $6.28
250: $5.91
500: View



Min.: 1
Mult.: 1
No

Aftermarket Circuit Breakers Stud Type 5 A 12 V 1 Pole Self-Reset 81xxxxST No
TE Connectivity / P&B W33-S1N1Q-20
Enlarge		 TE Connectivity / P&B Circuit Breakers 20A 2-P Black Rocker P1 Switch P2 Trip QC Page 2,740

 Data Sheet 		60
In Stock
1: $16.66
10: $15.96
25: $15.33
50: $13.87
100: $12.10



Min.: 1
Mult.: 1
No

Thermal Circuit Breakers Supplementary Protector 20 A 250 V 50 V 2 Poles Rocker Series Trip Overload Sensing W33 No
TE Connectivity / P&B W67-X2Q110-20
Enlarge		 TE Connectivity / P&B Circuit Breakers CIRCUIT BREAKER SWITCH 20A WH 48
In Stock
1: $20.83
5: $19.62
10: $18.10
25: $15.06
50: View



Min.: 1
Mult.: 1


Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 20 A 277 V 1 Pole Toggle Series Trip W6 - 40 C to + 85 C No
TE Connectivity / P&B W33-S4B1Q-5
Enlarge		 TE Connectivity / P&B Circuit Breakers 2poles 5Amps Rocker Therm Circuit Brker 56
In Stock
1: $21.65
5: $20.85
10: $19.80
25: $18.94
50: View



Min.: 1
Mult.: 1


Thermal Circuit Breakers Supplementary Protector 5 A 250 V 50 V 2 Poles Rocker Series Trip Overload Sensing W33 Yes
Carling Technologies MA1-B-34-610-1-A26-B-C
Enlarge		 Carling Technologies Circuit Breakers 10 A ONE POLE ANGLED Page 2,022

 Data Sheet 		14
In Stock
1: $19.10
10: $17.44
25: $15.78
50: $14.12
100: $10.66



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 10 A 125 V, 250 V 80 V 1 Pole Rocker Series Trip (Current) M - 40 C to + 85 C No
Carling Technologies A12-B0-34-625-131-E
Enlarge		 Carling Technologies Circuit Breakers 25A 2 POLE .250 QC FLAT ROCKER RED Data Sheet 17
In Stock
1: $53.91
25: $52.12
50: $47.38
100: $46.21
500: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 25 A 277 V 80 V 2 Poles Rocker Series Trip (Current) A - 40 C to + 85 C No
Carling Technologies AA1-B0-34-630-3B1-C
Enlarge		 Carling Technologies Circuit Breakers 30 AMP ONE POLE Page 2,021

 Data Sheet 		12
In Stock
1: $23.55
10: $16.68
25: $15.41
50: $13.74



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 30 A 277 V 80 V 1 Pole Handle Series Trip (Current) A - 40 C to + 85 C No
Carling Technologies MB1-B-34-610-1-A27-B-C
Enlarge		 Carling Technologies Circuit Breakers 10 A ONE POLE FLAT Page 2,022

 Data Sheet 		19
In Stock
1: $23.53
10: $21.57
25: $20.43
50: $18.96
100: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 10 A 125 V, 250 V 80 V 1 Pole Rocker Series Trip (Current) M - 40 C to + 85 C No
Carling Technologies MB1-B-34-615-1-A26-B-C
Enlarge		 Carling Technologies Circuit Breakers 15 A ONE POLE FLAT Page 2,022

 Data Sheet 		15
In Stock
1: $21.01
10: $14.88
25: $13.74
50: $12.25



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 15 A 125 V, 250 V 80 V 1 Pole Rocker Series Trip (Current) M - 40 C to + 85 C No
Carling Technologies CA3-B0-34-620-121-D
Enlarge		 Carling Technologies Circuit Breakers 3 POLE 20 A Page 2,021

 Data Sheet 		10
In Stock
1: $115.47
10: $83.13
25: $76.20
50: $70.95



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 20 A 277 V 80 V 3 Poles Handle Series Trip (Current) C - 40 C to + 85 C No
Compare up to 20 parts.
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