Circuit Breakers

(150638 results)

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.

Part # Manufacturer Description Availability Pricing Quantity
Siemens_3RV20314PB10

3RV20314PB10

Circuit Breakers
 Siemens MSP S2 CLASS 20 28-36A SCREW
In Stock
1+: $501.11000
Siemens_5SJ42328HG41

5SJ42328HG41

Circuit Breakers
 Siemens MCB 5SJ4 2P 240V 32A 10K D-TRIP
In Stock
1+: $121.57000
Siemens_3RV21111AA10

3RV21111AA10

Circuit Breakers
 Siemens MSP S00 AUTO RESET 1.1-1.6A SCRE
In Stock
1+: $319.64000
Siemens_5SJ42407HG41

5SJ42407HG41

Circuit Breakers
 Siemens MCB 5SJ4 2P 240V 40A 14K C-TRIP
In Stock
1+: $121.57000
Siemens_3RV20324VA10

3RV20324VA10

Circuit Breakers
 Siemens MSP S2 CLASS 10 35-45A SCREW
In Stock
1+: $602.03000
Siemens_3RV21314XA10

3RV21314XA10

Circuit Breakers
 Siemens CIRCUIT BREAKER. SCREW-TYPE. 59
In Stock
1+: $650.43000
Siemens_3RV23314WC10

3RV23314WC10

Circuit Breakers
 Siemens CIRCUIT-BREAKER S2 52A SCREW
In Stock
1+: $487.30000
Siemens_3RV24111KA10

3RV24111KA10

Circuit Breakers
 Siemens MSP S00 FOR XFRMR 9-12.5A SCREW
In Stock
1+: $242.14000
Siemens_3RV24211JA10

3RV24211JA10

Circuit Breakers
 Siemens CIRCUIT-BREAKER SCREW CONNECTION
In Stock
1+: $250.45000
Siemens_11WD3B

11WD3B

Circuit Breakers
 Siemens STARTER-MANUALLY OP,3 PH,11-16FL
In Stock
-
Siemens_11YD3BG

11YD3BG

Circuit Breakers
 Siemens STARTER-MANUALLY OP,3 PH,17-22FL
In Stock
-
Siemens_3RV28110ED10

3RV28110ED10

Circuit Breakers
 Siemens TMCB UL489 FOR XFRMR S00 0.4A SC
In Stock
1+: $419.79000
Siemens_3RV27111HD10

3RV27111HD10

Circuit Breakers
 Siemens TMCB UL489 S00 8A SCREW
In Stock
1+: $419.79000
Siemens_3RV20111GA25

3RV20111GA25

Circuit Breakers
 Siemens MSP S00 4.5-6.3A AUX 1NO 1NC SPR
In Stock
1+: $242.81000
Siemens_3RV20110GA20

3RV20110GA20

Circuit Breakers
 Siemens MSP S00 0.45-0.63A SPRING
In Stock
1+: $178.12000
Siemens_3RV20111EA40

3RV20111EA40

Circuit Breakers
 Siemens MSP S00 2.8-4A RING LUG
In Stock
1+: $197.54000
Siemens_3RV20314KA15

3RV20314KA15

Circuit Breakers
 Siemens BREAKER,MSP S2 CLASS 10 62-73A S
In Stock
1+: $601.34000
Siemens_5SJ41328HG41

5SJ41328HG41

Circuit Breakers
 Siemens MCB 5SJ4 1P 240V 32A 10K D-TRIP
In Stock
1+: $59.23000
Siemens_3RV20314XA15

3RV20314XA15

Circuit Breakers
 Siemens MSP S2 CLASS 10 49-59A SCREW 1NO
In Stock
1+: $538.46000
Siemens_3RV20314UB15

3RV20314UB15

Circuit Breakers
 Siemens CIRCUIT BREAKER. SCREW-TYPE. 40
In Stock
1+: $564.02000
Siemens_5SJ42138HG41

5SJ42138HG41

Circuit Breakers
 Siemens MCB 5SJ4 2P 240V 13A 14K D-TRIP
In Stock
1+: $112.53000
Siemens_3RV21314JA10

3RV21314JA10

Circuit Breakers
 Siemens CIRCUIT BREAKER. SCREW-TYPE. 65
In Stock
1+: $650.43000
Siemens_3RV23211EC20

3RV23211EC20

Circuit Breakers
 Siemens CIRCUIT-BREAKER S0 4A NO OVERLOA
In Stock
1+: $209.74000
Siemens_A6X30074019

A6X30074019

Circuit Breakers
 Siemens MSP S00 2.8-4A SCREW 24PCS
In Stock
1+: $164.62000
Siemens_3RV24110AA10

3RV24110AA10

Circuit Breakers
 Siemens MSP S00 FOR XFRMR 0.11-0.16A SCR
In Stock
1+: $206.47000
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