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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 8,503 Matches  

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Compare up to 20 parts.
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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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Carling Technologies MA1-B-34-620-1-A26-B-C
Enlarge		 Carling Technologies Circuit Breakers 20 A ONE POLE ANGLED Page 2,022

 Data Sheet 		13
In Stock
1: $17.37
10: $15.86
25: $14.35
50: $12.84



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 20 A 125 V, 250 V 80 V 1 Pole Rocker Series Trip (Current) M - 40 C to + 85 C No
Carling Technologies C12-B0-34-630-131-E
Enlarge		 Carling Technologies Circuit Breakers 30A TWO POLE FLAT ROCKER RED Data Sheet 6
In Stock
1: $70.07
25: $67.76
50: $61.60
100: $60.06
500: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 30 A 277 V 80 V 2 Poles Rocker Series Trip (Current) C - 55 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
Carling Technologies AA1-B0-34-630-3D1-C
Enlarge		 Carling Technologies Circuit Breakers 30 Amp 1 POLE Data Sheet 20
In Stock
1: $26.59
10: $17.66
25: $16.19
50: $14.22



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 Series - 40 C to + 85 C No
Carling Technologies CA2-B0-34-630-121-D
Enlarge		 Carling Technologies Circuit Breakers 30 A TWO POLE Page 2,021

 Data Sheet 		9
In Stock
1: $75.48
10: $53.47
25: $49.38
50: $44.03
100: $43.45



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 30 A 277 V 80 V 2 Poles Handle Series Trip (Current) C - 40 C to + 85 C No
Carling Technologies MB1-B-34-620-1-A27-B-C
Enlarge		 Carling Technologies Circuit Breakers 20 A ONE POLE FLAT Data Sheet 17
In Stock
1: $16.73
10: $14.34
25: $13.15
50: $11.15



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 20 A 125 V, 250 V 80 V 1 Pole Rocker Series Trip (Current) M - 40 C to + 85 C No
Carling Technologies A12-B0-34-630-131-E
Enlarge		 Carling Technologies Circuit Breakers 30A 2 POLE .250 QC FLAT ROCKER RED Data Sheet 8
In Stock
1: $49.00
25: $47.38
50: $43.07
100: $42.00
500: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 30 A 277 V 80 V 2 Poles Rocker Series Trip (Current) A - 40 C to + 85 C No
Schurter 4420.0221
Enlarge
4420.0221


New At Mouser

Schurter Circuit Breakers CBE AS168X-CB2G300 Data Sheet 4
In Stock
1: $55.60



Min.: 1
Mult.: 1


Circuit Breakers 30 A 2 Poles Handle Supplementary Protectors AS168XAC2 - 20 C to + 60 C No
4430.156


New At Mouser

Schurter Circuit Breakers CBE TA45 A126F160C0-753-AZM01 Data Sheet 13
In Stock
1: $26.42
5: $25.59
10: $23.45
20: $21.32
50: $16.58



Min.: 1
Mult.: 1
TA45
Carling Technologies CA2-B0-34-620-121-D
Enlarge		 Carling Technologies Circuit Breakers 20 A TWO POLE Page 2,021

 Data Sheet 		5
In Stock
1: $75.48
10: $53.47
25: $49.38
50: $44.03
100: $43.45



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 20 A 277 V 80 V 2 Poles Handle Series Trip (Current) C - 40 C to + 85 C No
Carling Technologies CA2-B0-34-615-121-D
Enlarge		 Carling Technologies Circuit Breakers 15 A TWO POLE Data Sheet 7
In Stock
1: $117.42
10: $97.85
25: $83.87
50: $78.28
100: $42.93



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 15 A 277 V 80 V 2 Poles Handle Series Trip (Current) C - 40 C to + 85 C No
4430.0423


New At Mouser

Schurter Circuit Breakers CBE TA45-ABTWF080C0 Data Sheet 18
In Stock
1: $17.28



Min.: 1
Mult.: 1
TA45
4430.0982


New At Mouser

Schurter Circuit Breakers CBE TA45-A144F160C0 Data Sheet 18
In Stock
1: $22.57



Min.: 1
Mult.: 1
TA45
Phoenix Contact 0700040
Enlarge		 Phoenix Contact Circuit Breakers TCP 40/DC32V Data Sheet 31
In Stock
1: $11.15
10: $10.32
50: $9.52
100: $8.84
500: $8.00



Min.: 1
Mult.: 1
Device Circuit Breakers Thermal Device 40 A 32 V 1 Pole Pushbutton TCP - 30 C to + 60 C No
4430.1203


New At Mouser

Schurter Circuit Breakers CBE TA45-A323L200C0 Data Sheet 19
In Stock
1: $32.61



Min.: 1
Mult.: 1
TA45
Phoenix Contact 0903033
Enlarge		 Phoenix Contact Circuit Breakers EC-E4 2A 2 A, N/C SIGNAL CNT Page 2,738

 Data Sheet 		7
In Stock
1: $83.00
5: $80.72
10: $76.36
25: $70.53
50: View



Min.: 1
Mult.: 1
Device Circuit Breakers Electronic 2 A 24 V 1 Pole Slide Switch EC-E 0 C to + 50 C No
Schurter TS-709-5
Enlarge		 Schurter Circuit Breakers 5A Thermal Reset 1-pole threaded neck Page 2,740

 Data Sheet 		131
In Stock
1: $3.06
10: $2.73
25: $2.45
50: $2.32
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Circuit Breaker for Equipment 5 A 125 V, 250 V 32 V 1 Pole Pushbutton TS-709 - 10 C to + 60 C No
4410.0209


New At Mouser

Schurter Circuit Breakers CBE T12-221S-1.5 Data Sheet 20
In Stock
1: $26.05



Min.: 1
Mult.: 1
T12
Schurter TA45-ABTBLJ20C0
Enlarge		 Schurter Circuit Breakers TA45 BLK ROCKER 2.0A Page 2,026

 Data Sheet 		17
In Stock
1: $14.33
10: $12.73
25: $11.46
50: $10.84



Min.: 1
Mult.: 1
Thermal Circuit Breakers Circuit Breaker for Equipment 2 A 240 V 60 V 1 Pole Rocker ON/OFF TA45 - 10 C to + 55 C
Schurter 4420.0229
Enlarge
4420.0229


New At Mouser

Schurter Circuit Breakers CBE AS168X-CB1G030 Data Sheet 10
In Stock
1: $30.81



Min.: 1
Mult.: 1


Circuit Breakers 3 A 1 Pole Handle Supplementary Protectors AS168XAC1 - 20 C to + 60 C No
Schurter T9-311C-14
Enlarge		 Schurter Circuit Breakers 14A 0.25" QC Threaded neck Page 2,739

 Data Sheet 		98
In Stock
1: $2.02
10: $1.84
25: $1.73
50: $1.64
100: View



Min.: 1
Mult.: 1
Thermal Circuit Breakers Circuit Breaker for Equipment 14 A 240 V 48 V 1 Pole Pushbutton T9 - 5 C to + 60 C No
Carling Technologies CA2-B0-34-615-121-C
Enlarge		 Carling Technologies Circuit Breakers 15 A TWO POLE Data Sheet 8
In Stock
1: $62.96
25: $60.88
50: $55.35
100: $53.96
500: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 15 A 277 V 80 V 2 Poles Handle Series Trip (Current) C - 40 C to + 85 C No
Carling Technologies A11-B0-34-615-131-E
Enlarge		 Carling Technologies Circuit Breakers 15A 1 POLE .250 QC FLAT ROCKER RED Data Sheet 23
In Stock
1: $22.76
25: $22.01
50: $20.00
100: $19.51
500: View



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 15 A 277 V 80 V 1 Pole Rocker Series Trip (Current) A - 40 C to + 85 C No
Carling Technologies CA3-B0-34-610-121-D
Enlarge		 Carling Technologies Circuit Breakers 3 POLE 10 AMPS Data Sheet 7
In Stock
1: $114.70
10: $104.28
25: $93.85
50: $83.42



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector / Motor Controller 10 A 277 V 80 V 3 Poles Handle Series Trip (Current) C - 40 C to + 85 C No
Carling Technologies BA2-B0-34-425-121-D
Enlarge		 Carling Technologies Circuit Breakers 2.5 A TWO POLE Page 2,021

 Data Sheet 		10
In Stock
1: $59.93
10: $41.22
25: $36.65
50: $33.20
100: $31.45



Min.: 1
Mult.: 1
Hydraulic Magnetic Circuit Breakers Supplementary Protector 2.5 A 277 V 80 V 2 Poles Handle Series Trip (Current) B - 40 C to + 85 C No
Compare up to 20 parts.
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