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All Products > Electromechanical > 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 7,497 Matches  

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Compare up to 20 parts.
Select ImageMouser Part # Mfr. Part # Mfr. Description Documents 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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Carling Technologies CA2-B0-34-650-121-D
Enlarge
Carling Technologies Circuit Breakers 50 A TWO POLE
Page 2,129

Data Sheet
19
In Stock
1: $75.48
10: $53.47
25: $49.38
50: $44.03



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 50 A 277 V 80 V 2 Poles Handle Series Trip (Current) C - 40 C to + 85 C Not Illuminated
Phoenix Contact 0914167
Enlarge
Phoenix Contact Circuit Breakers TMC 1 F1 100 10.0A
Data Sheet 19
In Stock
1: $77.38
10: $70.62
25: $68.77
50: $66.51
100: View



Min.: 1
Mult.: 1
Device Circuit Breakers Thermomagnetic 10 A 250 V 65 V 1 Pole Toggle TMC - 30 C to + 60 C Not Illuminated
Phoenix Contact 0903023
Enlarge
Phoenix Contact Circuit Breakers EC-E1 1A 1 A, N/O SIGNAL CNT
Page 2,939

Data Sheet
14
In Stock
1: $83.40
10: $76.12
25: $74.12
50: $71.68
100: View



Min.: 1
Mult.: 1
Device Circuit Breakers Electronic 1 A 24 V 1 Pole Slide Switch EC-E 0 C to + 50 C Not Illuminated
Carling Technologies Circuit Breakers Circuit Breaker 5pole, DC
Data Sheet 9
In Stock
1: $117.98



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 277 V 80 V 5 Poles Handle Series Trip (Current) A Series - 40 C to + 85 C Not Illuminated
Carling Technologies EA3-B0-66-490-11A-GB
Enlarge
Carling Technologies Circuit Breakers CIRCUIT BREAKER 3 POLE 20A
Data Sheet 10
In Stock
1: $127.88
5: $115.50
10: $109.61
20: $104.63
50: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 9 A 600 V 125 V 3 Poles Handle Series Trip (Current) E - 40 C to + 85 C Not Illuminated
Qualtek QLB-253-11B3N-3BA
Enlarge
Qualtek Circuit Breakers 25A FRT PANEL METAL .250 QC TAB
Data Sheet 598
In Stock
1: $2.15
50: $1.87
100: $1.72
250: $1.63



Min.: 1
Mult.: 1
Thermal Circuit Breakers Thermal 25 A 125 V to 250 V 32 V 1 Pole Pushbutton QLB Not Illuminated
TE Connectivity / P&B W54-XB1A4A10-20
Enlarge
TE Connectivity / P&B Circuit Breakers 20A PUSH TO RESET
Page 2,131

Data Sheet
564
In Stock
1: $2.99
10: $2.78
25: $2.60
50: $2.36
100: $1.83



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 20 A 250 V 1 Pole Pushbutton Series Trip W54 0 C to + 60 C Not Illuminated
TE Connectivity / P&B W28-XQ1A-12
Enlarge
TE Connectivity / P&B Circuit Breakers 12A PUSH TO RESET
Page 2,131

Data Sheet
517
In Stock
1: $3.01
10: $2.81
25: $2.63
50: $2.38
100: $1.88



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 Not Illuminated
TE Connectivity / P&B W28-XT1A-15
Enlarge
TE Connectivity / P&B Circuit Breakers 15A PUSH TO RESET
Data Sheet 654
In Stock
1: $3.28
10: $3.06
25: $2.86
50: $2.59
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 15 A 250 V 32 V 1 Pole Pushbutton Series Trip W28 Not Illuminated
TE Connectivity / P&B W51-A121B1-15
Enlarge
TE Connectivity / P&B Circuit Breakers 15A RCKR ACT RED ILL
Page 2,132

Data Sheet
623
In Stock
More Info Available
1: $3.49
10: $3.25
25: $3.04
50: $2.75
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 15 A 125 V 50 V 1 Pole Rocker Trip Free - Switchable W51 0 C to + 60 C Illuminated
TE Connectivity / P&B W51-A121B1-5
Enlarge
TE Connectivity / P&B Circuit Breakers 5A ROCKR ACT RED ILL
Page 2,132

Data Sheet
324
In Stock
1: $3.54
10: $3.31
25: $3.09
50: $2.80
100: $2.21



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 5 A 125 V 50 V 1 Pole Rocker Trip Free - Switchable W51 0 C to + 60 C Illuminated
TE Connectivity / P&B W51-A122B1-20
Enlarge
TE Connectivity / P&B Circuit Breakers 20A RCKR ACT RED ILL
Page 2,132

Data Sheet
318
In Stock
1: $3.77
10: $3.51
25: $3.28
50: $2.97
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 20 A 250 V 50 V 1 Pole Rocker Trip Free - Switchable W51 0 C to + 60 C Illuminated
TE Connectivity / P&B W58-XB1A4A-10
Enlarge
TE Connectivity / P&B Circuit Breakers 10A PUSH TO RESET
Page 2,132

Data Sheet
308
In Stock
1: $5.19
10: $4.84
25: $4.54
50: $4.11
100: $3.24



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 Not Illuminated
TE Connectivity / P&B W28-XQ1A-0.50
Enlarge
TE Connectivity / P&B Circuit Breakers 0.5A PUSH TO RESET
Page 2,131

Data Sheet
274
In Stock
1: $5.65
10: $5.26
25: $4.94
50: $4.47
100: $3.53



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 500 mA 250 V 32 V 1 Pole Pushbutton Series Trip W28 - 20 C to + 60 C Not Illuminated
TE Connectivity / P&B W28-XQ1A-0.25
Enlarge
TE Connectivity / P&B Circuit Breakers 0.25A PUSH TO RESET
Page 2,131

Data Sheet
306
In Stock
1: $5.65
10: $5.26
25: $4.94
50: $4.47
100: $3.53



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 250 mA 250 V 32 V 1 Pole Pushbutton Series Trip W28 - 20 C to + 60 C Not Illuminated
TE Connectivity / P&B W58-XC4C12A-10
Enlarge
TE Connectivity / P&B Circuit Breakers 10A PUSH TO RESET ST
Page 2,132

Data Sheet
351
In Stock
1: $5.90
10: $5.42
25: $4.95
50: $4.46
100: $3.78



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 Not Illuminated
TE Connectivity / P&B W58-XC4C12A-25
Enlarge
TE Connectivity / P&B Circuit Breakers 25A PUSH TO RESET ST
Page 2,132

Data Sheet
297
In Stock
1: $5.92
10: $5.79
25: $5.30
50: $4.79
100: $3.79



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 25 A 250 V 50 V 1 Pole Pushbutton Series Trip W58 - 20 C to + 60 C Not Illuminated
TE Connectivity / P&B W58-XC4C12A-5
Enlarge
TE Connectivity / P&B Circuit Breakers 5A PUSH TO RESET ST
Page 2,132

Data Sheet
291
In Stock
1: $6.06
10: $5.79
25: $5.30
50: $4.79
100: $3.79



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 5 A 250 V 50 V 1 Pole Pushbutton Series Trip W58 - 20 C to + 60 C Not Illuminated
TE Connectivity / P&B W58-XC4C12A-15
Enlarge
TE Connectivity / P&B Circuit Breakers 15A PUSH TO RESET ST
Page 2,132

Data Sheet
300
In Stock
1: $6.06
10: $5.79
25: $5.30
50: $4.79
100: $3.79



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 15 A 250 V 50 V 1 Pole Pushbutton Series Trip W58 - 20 C to + 60 C Not Illuminated
TE Connectivity / P&B W58-XC4C12A-2
Enlarge
TE Connectivity / P&B Circuit Breakers 2A PUSH TO RESET ST
Page 2,132

Data Sheet
143
In Stock
1: $7.28
10: $6.84
25: $6.37
50: $5.76
100: $4.54



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 2 A 250 V 50 V 1 Pole Pushbutton Series Trip W58 - 20 C to + 60 C Not Illuminated
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 2,941

Data Sheet
47
In Stock
1: $17.78
10: $17.53
25: $17.28
50: $16.81
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 Illuminated
TE Connectivity / P&B W91-X112-5
Enlarge
TE Connectivity / P&B Circuit Breakers CIRCUIT BREAKER SWITCH 5A BLACK
Data Sheet 82
In Stock
1: $21.26
5: $19.85
10: $19.25
25: $18.66
50: $16.83



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 5 A 277 V 1 Pole Toggle Series Trip W9 - 40 C to + 85 C Not Illuminated
Altech 2BU16R
Enlarge
Altech Circuit Breakers 16A B Characteristic UL 1077 2 POLE
Page 2,938

Data Sheet
82
In Stock
1: $23.08
10: $20.95
50: $19.63
100: $19.24
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 Not Illuminated
TE Connectivity / P&B W23-X1A1G-10
Enlarge
TE Connectivity / P&B Circuit Breakers 10A PUSH/PULL ACT.
Page 2,131

Data Sheet
55
In Stock
More Info Available
1: $25.17
10: $24.52
25: $22.02
50: $19.93
100: $17.07



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 10 A 240 V 50 V 1 Pole Pushbutton Series Trip W23 - 20 C to + 60 C Not Illuminated
TE Connectivity / P&B W33-T2N1Q-20
Enlarge
TE Connectivity / P&B Circuit Breakers 20A 2P White Rocker P1 & P2 Trip QC
Page 2,941

Data Sheet
66
In Stock
1: $25.22
10: $23.98
25: $22.07
50: $19.95
100: $18.93



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 20 A 250 V 50 V 2 Poles Rocker Series Trip Overload Sensing W33 Not Illuminated
Compare up to 20 parts.
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