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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 7,501 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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TE Connectivity / P&B W67-X2Q12-10
 Enlarge
TE Connectivity / P&B Circuit Breakers 1pole 10Amp Toggle Mag circuit breaker
Data Sheet 48
In Stock
1: $20.83
5: $19.85
10: $18.02
25: $17.36
50: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 10 A 277 V 1 Pole Toggle Series Trip W6 - 40 C to + 85 C Not 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: $21.78
5: $20.34
10: $19.72
25: $19.11
50: $17.24



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
Carling Technologies BA1-B0-34-610-121-D
 Enlarge
Carling Technologies Circuit Breakers 10 A ONE POLE
Page 2,129

Data Sheet
67
In Stock
1: $22.00
10: $15.58
25: $14.39
50: $12.83
100: $11.89



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 10 A 277 V 80 V 1 Pole Handle Series Trip (Current) B - 40 C to + 85 C Not Illuminated
TE Connectivity / P&B W33-S4B1Q-5
 Enlarge
TE Connectivity / P&B Circuit Breakers 2poles 5Amps Rocker Therm Circuit Brker
Data Sheet 78
In Stock
1: $23.08
5: $22.23
10: $21.12
25: $20.19
50: View



Min.: 1
Mult.: 1


Thermal Circuit Breakers Supplementary Protector 5 A 250 V 50 V 2 Pole Rocker Series Trip Overload Sensing W33 Illuminated
TE Connectivity / P&B W23-X1A1G-35
 Enlarge
TE Connectivity / P&B Circuit Breakers 35A PUSH/PULL ACT.
Page 2,131

Data Sheet
46
In Stock
1: $25.17
10: $24.52
25: $22.02
50: $19.93
100: $17.07



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 35 A 240 V 50 V 1 Pole Pushbutton Series Trip W23 - 20 C to + 60 C Not Illuminated
TE Connectivity / P&B W23-X1A1G-15
 Enlarge
TE Connectivity / P&B Circuit Breakers 15A PUSH/PULL ACT.
Page 2,131

Data Sheet
70
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 15 A 240 V 50 V 1 Pole Pushbutton Series Trip W23 - 20 C to + 60 C Not Illuminated
Schurter 4430.2306
 Enlarge
Schurter Circuit Breakers TA45 ORANGE RCKR 20A
Page 2,134

Data Sheet
39
In Stock
1: $27.69
10: $24.61
25: $22.14
50: $20.90



Min.: 1
Mult.: 1
Thermal Circuit Breakers Circuit Breaker for Equipment 20 A 240 V 60 V 2 Pole Rocker ON/OFF TA45 - 10 C to + 55 C
TE Connectivity / P&B W33-T4B1Q-5
 Enlarge
TE Connectivity / P&B Circuit Breakers 5A 2-P Illum Amber P1 & P2 Trip QC
Page 2,941

Data Sheet
58
In Stock
1: $29.66
10: $27.67
25: $25.93
50: $23.48
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Supplementary Protector 5 A 250 V 50 V 2 Pole Rocker Series Trip Overload Sensing W33 Illuminated
TE Connectivity / P&B 3-1393248-3
 Enlarge
TE Connectivity / P&B Circuit Breakers W33-T1N1Q-15=W33
Data Sheet 60
In Stock
1: $34.81
10: $27.85
50: $26.40
100: $25.09



Min.: 1
Mult.: 1


Thermal Circuit Breakers Supplementary Protector 15 A 250 V 50 V 2 Pole Rocker Series Trip Overload Sensing W33 Not Illuminated
TE Connectivity / P&B W68-X2Q12-30
 Enlarge
TE Connectivity / P&B Circuit Breakers 30AMP 277VAC TOGGLE 2 POLE
Data Sheet 22
In Stock
1: $37.85
25: $34.52
50: $32.04
100: $29.68
200: $28.66



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 30 A 277 V 2 Pole Toggle Series Trip W6 - 40 C to + 85 C Not Illuminated
Phoenix Contact 2800840
 Enlarge
Phoenix Contact Circuit Breakers CB TM1 5A SFB P
This product may require additional documentation to export from the United States.
Page 2,133

Data Sheet
31
In Stock
1: $42.66
10: $38.93
25: $37.91
50: $36.66
100: View



Min.: 1
Mult.: 1
Device Circuit Breakers Thermomagnetic 5 A 240 V, 277 V 50 V 1 Pole Slide Trip Free CB TM1 - 30 C to + 60 C Not Illuminated
Phoenix Contact 2800837
 Enlarge
Phoenix Contact Circuit Breakers CB TM1 2A SFB P
Page 2,133

Data Sheet
21
In Stock
1: $42.66
10: $38.93
25: $37.91
50: $36.66
100: View



Min.: 1
Mult.: 1
Device Circuit Breakers Thermomagnetic 2 A 240 V, 277 V 50 V 1 Pole Slide Trip Free CB TM1 - 30 C to + 60 C Not Illuminated
TE Connectivity / P&B W92-X112-15
 Enlarge
TE Connectivity / P&B Circuit Breakers 15A 2 POLE 2 TOGGLE
Page 2,132

Data Sheet
29
In Stock
More Info Available
1: $48.33
10: $42.85
25: $39.26
50: $35.94
100: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 15 A 277 V 2 Pole Toggle Series Trip W9 - 40 C to + 85 C Not Illuminated
TE Connectivity W92-X112-40
 Enlarge
TE Connectivity Circuit Breakers CIRCUIT BREAKER SWITCH 40A BLK
Data Sheet 20
In Stock
1: $50.80
5: $48.64
10: $46.77
25: $43.13
50: View



Min.: 1
Mult.: 1


Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 40 A 277 V 2 Pole Toggle Series Trip W9 - 40 C to + 85 C Not Illuminated
Carling Technologies BA2-B0-34-450-121-D
 Enlarge
Carling Technologies Circuit Breakers 5 A TWO POLE
Page 2,129

Data Sheet
29
In Stock
1: $59.93
10: $41.22
25: $36.65
50: $33.20
100: $32.20



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 5 A 277 V 80 V 2 Pole Handle Series Trip (Current) B - 40 C to + 85 C Not Illuminated
TE Connectivity / P&B W92-X112-25
 Enlarge
TE Connectivity / P&B Circuit Breakers 25AMP 277VAC TOGGLE 2 POLE
Data Sheet 31
In Stock
1: $73.53
5: $66.84
10: $60.78
25: $54.69



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 25 A 277 V 2 Pole Toggle Series Trip W9 - 40 C to + 85 C Not Illuminated
Phoenix Contact 0914167
 Enlarge
Phoenix Contact Circuit Breakers TMC 1 F1 100 10.0A
Data Sheet 15
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
TE Connectivity / P&B W93-X112-40
 Enlarge
TE Connectivity / P&B Circuit Breakers 40A 3 POLE TOGGLE
Data Sheet 26
In Stock
More Info Available
1: $82.04
25: $70.77
50: $65.55
100: $63.94



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 40 A 277 V 3 Pole Toggle Series Trip W9 - 40 C to + 85 C Not Illuminated
Phoenix Contact 0903022
 Enlarge
Phoenix Contact Circuit Breakers EC-E1 0,5A 0.5A, N/O SIGNAL CNT
Data Sheet 16
In Stock
More Info Available
1: $87.20
25: $83.71
50: $80.23
100: $74.12
250: View



Min.: 1
Mult.: 1
Device Circuit Breakers Electronic 500 mA 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 8
In Stock
1: $117.98



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 277 V 80 V 5 Pole Handle Series Trip (Current) A Series - 40 C to + 85 C Not Illuminated
Carling Technologies EA3-B0-66-490-11A-GB 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 Pole Handle Series Trip (Current) E - 40 C to + 85 C Not Illuminated
TE Connectivity Circuit Breakers 16A Push to Reset 6.35 Strt Quick Conn
Data Sheet 200
In Stock
100: $4.19
200: $3.60



Min.: 100
Mult.: 100
Thermal Circuit Breakers Supplementary Protector 16 A 250 V 50 V 1 Pole Pushbutton Series Trip W58 - 20 C to + 60 C Not Illuminated
Qualtek QMB-203-11C3N-3BA Qualtek Circuit Breakers 20A FRT PNL PLASTIC .250 QC TAB
Data Sheet 830
In Stock
1: $2.05
50: $1.80
100: $1.64
250: $1.56



Min.: 1
Mult.: 1
Thermal Circuit Breakers Thermal 20 A 125 V to 250 V 32 V 1 Pole Pushbutton QMB Not Illuminated
Altech 2BU16R
 Enlarge
Altech Circuit Breakers 16A B Characteristic UL 1077 2 POLE
Page 2,938

Data Sheet
80
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 Pole Handle Supplementary Protectors R - 25 C to + 60 C Not Illuminated
Altech 2DU50L Altech Circuit Breakers 50.0A Two Pole "D"
Page 2,128

Data Sheet
27
In Stock
1: $79.58
10: $69.93
50: $62.01
100: $32.50
250: $31.71



Min.: 1
Mult.: 1
Circuit Protection Devices D-Trip 50 A 250 VDC 2 Pole Handle Supplementary Protectors L - 25 C to + 60 C Not Illuminated
Compare up to 20 parts.
7501
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