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_A6X30074036

A6X30074036

Circuit Breakers
 Siemens MSP S00 7-10A SCREW 24PCS
In Stock
1+: $184.63292
Siemens_A6X30089137

A6X30089137

Circuit Breakers
 Siemens MSP S0 9-12.5A SCREW 24PCS
In Stock
1+: $192.60167
Siemens_MMSKG2B

MMSKG2B

Circuit Breakers
 Siemens MANUAL SW,TOGGLE,3-PH,NEMA TYPE
In Stock
1+: $323.48000
Siemens_MRSKG22A

MRSKG22A

Circuit Breakers
 Siemens MANUAL SW,TOGGLE,3-P,110-120VAC,
In Stock
1+: $729.71000
Siemens_113D3BD

113D3BD

Circuit Breakers
 Siemens SWITCH-MANUALLY OP,3 PH,10 AMP,N
In Stock
-
Siemens_3RV23214NC20

3RV23214NC20

Circuit Breakers
 Siemens CIRCUIT-BREAKER S0 28A NO OVERLO
In Stock
1+: $360.84000
Siemens_11GD3BF

11GD3BF

Circuit Breakers
 Siemens STARTER-MANUALLY OP,3 PH,.45-.63
In Stock
-
Siemens_11LD3B

11LD3B

Circuit Breakers
 Siemens STARTER-MANUALLY OP,3 PH,1.1-1.6
In Stock
-
Siemens_3RV24111AA20

3RV24111AA20

Circuit Breakers
 Siemens MSP S00 FOR XFRMR 1.1-1.6A SPRIN
In Stock
1+: $218.81000
Siemens_11MD3BF

11MD3BF

Circuit Breakers
 Siemens STARTER-MANUALLY OP,3 PH,1.4-2FL
In Stock
-
Siemens_3RV28111ED10

3RV28111ED10

Circuit Breakers
 Siemens TMCB UL489 FOR XFRMR S00 4A SCRE
In Stock
1+: $452.72000
Siemens_3RV28111CD10

3RV28111CD10

Circuit Breakers
 Siemens TMCB UL489 FOR XFRMR S00 2.5A SC
In Stock
1+: $452.72000
Siemens_3RV20111AA25

3RV20111AA25

Circuit Breakers
 Siemens MSP S00 1.1-1.6A AUX 1NO 1NC SPR
In Stock
1+: $234.59000
Siemens_3RV20110DA15

3RV20110DA15

Circuit Breakers
 Siemens SWITCH_MOTOR_3RV2011-0DA15
In Stock
1+: $210.58000
Siemens_3RV20314JB15

3RV20314JB15

Circuit Breakers
 Siemens CIRCUIT BREAKER. SCREW-TYPE. 65
In Stock
1+: $630.37000
Siemens_3RV20214AA20

3RV20214AA20

Circuit Breakers
 Siemens MSP S0 11-16A SPRING
3
1+: $240.79000
Siemens_3RV20214CA15

3RV20214CA15

Circuit Breakers
 Siemens MSP S0 17-22A SCREW W/AUX 1NO/1N
In Stock
1+: $302.88000
Siemens_3RV20211EA15

3RV20211EA15

Circuit Breakers
 Siemens MSP S0 2.8-4A SCRW W/AUX 1NO/1NC
In Stock
1+: $253.21000
Siemens_3RV20231KA10

3RV20231KA10

Circuit Breakers
 Siemens CIRCUIT-BREAKER S0 9-12.5A SCREW
In Stock
1+: $231.12000
Siemens_3RV20314WA15

3RV20314WA15

Circuit Breakers
 Siemens MSP S2 CLASS 10 42-52A SCREW 1NO
In Stock
1+: $536.38000
Siemens_3RV20234CA10

3RV20234CA10

Circuit Breakers
 Siemens CIRCUIT-BREAKER S0 17-22A SCREW
In Stock
1+: $255.96000
Siemens_3RV20314SB15

3RV20314SB15

Circuit Breakers
 Siemens CIRCUIT BREAKER. SCREW-TYPE. 14
In Stock
1+: $439.61000
Siemens_3RV20314VB10

3RV20314VB10

Circuit Breakers
 Siemens MSP S2 CLASS 20 35-45A SCREW
In Stock
1+: $575.09000
WAGO_787-1662/004-1000

787-1662/004-1000

Circuit Breakers
 WAGO ELECTRONIC CIRCUIT BREAKER; 2-CH
9
1+: $325.21000
10+: $307.13800
100+: $271.00500
WAGO_787-1668/000-004

787-1668/000-004

Circuit Breakers
 WAGO ELECTRONIC CIRCUIT BREAKER; 8-CH
In Stock
1+: $513.24000
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