Circuit Breakers & Disconnectors

Circuit Breakers & Disconnectors are electrical components used to protect circuits from overloads or short circuits. Circuit breakers are automatic switches that open when the current exceeds a certain level. Disconnectors are manual switches that isolate circuits for maintenance or repair purposes.

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• Sale!

  Mitsubishi NF30-KC 5A Circuit Breaker 5A 3 Pole No-Fuse 500VAC

  $23.53 Original price was: $23.53.$20.00Current price is: $20.00.
• Sale!

  Mitsubishi NF30-CS 3A Circuit Breaker 3A 3 Pole No-Fuse 500VAC

  $17.65 Original price was: $17.65.$15.00Current price is: $15.00.
• Sale!

  Mitsubishi NF30-KC 10A Circuit Breaker 10A 2 Pole No-Fuse 500VAC

  $41.18 Original price was: $41.18.$35.00Current price is: $35.00.
• Sale!

  Mitsubishi NF30-KC 3A Circuit Breaker 3A 2 Pole No-Fuse 500VAC

  $14.71 Original price was: $14.71.$12.50Current price is: $12.50.
• Sale!

  Fuji SA52RCUL Circuit Breaker SA52RCUL 10 10A 2 Pole 240VAC

  $23.53 Original price was: $23.53.$20.00Current price is: $20.00.
• Sale!

  Fuji BW32AAG-2P010 Circuit Breaker 10A 2 Pole

  $35.30 Original price was: $35.30.$30.00Current price is: $30.00.
• Sale!

  Mitsubishi NV50-SWU Circuit Breaker 20A 3 Pole 120/240VAC GFI

  $35.30 Original price was: $35.30.$30.00Current price is: $30.00.
• Sale!

  Mitsubishi NV50-SW Circuit Breaker 20A Earth-Leakage 3 Pole 230/400/440VAC

  $35.30 Original price was: $35.30.$30.00Current price is: $30.00.
• Sale!

  Fuji EW32AAG-2P005 Circuit Breaker 5A 2 Pole missing screws

  $41.18 Original price was: $41.18.$35.00Current price is: $35.00.
• Sale!

  Fuji EW32AAG-2P005 Circuit Breaker 5A 2 Pole

  $52.94 Original price was: $52.94.$45.00Current price is: $45.00.
• Sale!

  Siemens 3RV1041-4KA10 Manual Motor Starter Circuit Breaker 57-70A S3

  $158.83 Original price was: $158.83.$134.99Current price is: $134.99.
• Sale!

  Fuji BW9FHA-A Shunt Trip

  $52.94 Original price was: $52.94.$45.00Current price is: $45.00.
• Sale!

  Schneider Electric GV2ME14 Motor Circuit Breaker GV2 ME14 6-10A

  $58.82 Original price was: $58.82.$50.00Current price is: $50.00.
• Sale!

  Siemens HNF361 Heavy Duty Safety Switch 30A 3P 600VAC 250VDC NEMA Type 1 Non-Fused

  $88.24 Original price was: $88.24.$74.99Current price is: $74.99.
• Sale!

  Siemens 3RV1742-5DD10 Circuit Breaker 25A New in Box

  $376.48 Original price was: $376.48.$319.97Current price is: $319.97.
• Sale!

  Siemens 3RV2011-0AA20 Circuit Breaker 0.11-0.16A

  $111.77 Original price was: $111.77.$94.99Current price is: $94.99.
• Sale!

  Siemens 3RV2011-0EA20 Circuit Breaker 0.28-0.4A

  $121.18 Original price was: $121.18.$102.99Current price is: $102.99.
• Sale!

  Siemens 3RV2011-1HA25 Circuit Breaker 5.5-8.0A

  $182.36 Original price was: $182.36.$154.98Current price is: $154.98.
• Sale!

  Siemens 3RV2011-0FA20 Circuit Breaker 0.35-0.5A

  $167.65 Original price was: $167.65.$142.49Current price is: $142.49.
• Sale!

  Siemens 3RV2011-1KA25 Circuit Breaker 9.0-12.5A

  $178.83 Original price was: $178.83.$151.98Current price is: $151.98.
• Sale!

  Siemens 3RV2711-1FD10 Circuit Breaker 5A

  $131.77 Original price was: $131.77.$111.99Current price is: $111.99.
• Sale!

  Siemens 3RV2011-1DA20 Circuit Breaker 2.2-3.2A

  $123.53 Original price was: $123.53.$104.99Current price is: $104.99.
• Sale!

  Siemens 3RV1742-5QD10 Circuit Breaker

  $294.12 Original price was: $294.12.$249.98Current price is: $249.98.
• Sale!

  Square D HU361DS Heavy Duty Safety Switch 30A 600V AC/DC S/S Stainless Steel Non-Fusible Disconnect

  $1,000.02 Original price was: $1,000.02.$849.92Current price is: $849.92.
• Sale!

  Eaton PKZM4-63/AK Motor Protector Circuit Breaker XTPR063DC1 55-63A Moeller

  $411.78 Original price was: $411.78.$349.96Current price is: $349.96.
• Sale!

  Siemens 3RV2011-1GA20 Circuit Breaker 4.5-6.3A

  $123.53 Original price was: $123.53.$104.99Current price is: $104.99.
• Sale!

  Siemens 3RV2011-1AA20 Circuit Breaker 1.1-1.6A

  $276.48 Original price was: $276.48.$234.98Current price is: $234.98.
• Sale!

  Shihlin Electric CNS 14985-1 Miniature Circuit Breaker IEC 60947-2 Ser A 32A BHA 32

  $29.41 Original price was: $29.41.$25.00Current price is: $25.00.
• Sale!

  Merlin Gerin NSF250 HC Circuit Breaker 250A 3 Pole

  $158.83 Original price was: $158.83.$134.99Current price is: $134.99.
• Sale!

  Merlin Gerin 29278/29279 Compact NSF Plug in Base DP-3468 3 Pole

  $64.71 Original price was: $64.71.$54.99Current price is: $54.99.
• Sale!

  Square D FA36100 Circuit Breaker ZZ-7385 100A 3 Pole

  $158.83 Original price was: $158.83.$134.99Current price is: $134.99.
• Sale!

  Siemens NDX3B100 Circuit Breaker 3VL2110-1KN30-0AA0 100A 3 Pole

  $141.18 Original price was: $141.18.$119.99Current price is: $119.99.
• Sale!

  Square D 9422ARP11 Complete Circuit Breaker Operating Mechanism Ser B

  $464.72 Original price was: $464.72.$394.96Current price is: $394.96.
• Sale!

  Allen-Bradley 140M-F8E-C45 Motor Protector Circuit Breaker 32-45A Ser C

  $335.30 Original price was: $335.30.$284.97Current price is: $284.97.
• Sale!

  Allen-Bradley 140U-D6D3-B10 Circuit Breaker 1A PN-189080 3 Pole Ser B

  $382.36 Original price was: $382.36.$324.97Current price is: $324.97.
• Sale!

  Allen-Bradley 140-MN-0400 Manual Motor Starter Circuit Breaker 2.5-4.0A Ser C 3 Pole

  $5.88 Original price was: $5.88.$5.00Current price is: $5.00.
• Sale!

  Allen-Bradley 140-MN-0400 140-A210 Manual Motor Starter Circuit Breaker 2.5-4.0A Ser C 3 Pole

  $11.76 Original price was: $11.76.$10.00Current price is: $10.00.
• Sale!

  Allen-Bradley 140-MN-0100 Manual Motor Starter Circuit Breaker 0.63-1.0A Ser C 3 Pole

  $11.76 Original price was: $11.76.$10.00Current price is: $10.00.
• Sale!

  Allen-Bradley 140-MN-0100 140-A210 Manual Motor Starter Circuit Breaker 0.63-1.0A Ser C 3 Pole

  $15.29 Original price was: $15.29.$13.00Current price is: $13.00.
• Sale!

  Allen-Bradley 140-MN-0160 Manual Motor Starter Circuit Breaker 1.0-1.6A Ser C 3 Pole

  $23.53 Original price was: $23.53.$20.00Current price is: $20.00.
• Sale!

  Allen-Bradley 140-MN-0160 140-A210 Manual Motor Starter Circuit Breaker 1.0-1.6A Ser C 3 Pole

  $25.88 Original price was: $25.88.$22.00Current price is: $22.00.
• Sale!

  Allen-Bradley 140-MN-0063 Manual Motor Starter Circuit Breaker 0.40-0.63A Ser C 3 Pole

  $15.29 Original price was: $15.29.$13.00Current price is: $13.00.
• Sale!

  Allen-Bradley 140-MN-0250 Manual Motor Starter Circuit Breaker 1.6-2.5A Ser C 3 Pole

  $17.65 Original price was: $17.65.$15.00Current price is: $15.00.
• Sale!

  Allen-Bradley 140-MN-0630 Manual Motor Starter Circuit Breaker 4.0-6.3A Ser C 3 Pole

  $17.65 Original price was: $17.65.$15.00Current price is: $15.00.
• Sale!

  Allen-Bradley 140-L2 Terminal Link Ser C

  $3.53 Original price was: $3.53.$3.00Current price is: $3.00.
• Sale!

  Allen-Bradley 140-L11 Commoning Link Ser C

  $5.88 Original price was: $5.88.$5.00Current price is: $5.00.
• Sale!

  Allen-Bradley 140U-K6D3-D25 Circuit Breaker 400A 140U-K6X3 A 240/480/600VAC 250VDC 3 POLE

  $500.01 Original price was: $500.01.$424.96Current price is: $424.96.
• Sale!

  Siemens JXD63B300 Circuit Breaker 300A 240/480/600VAC 2XD6-A 3 Pole

  $235.30 Original price was: $235.30.$199.98Current price is: $199.98.
• Sale!

  Cutler-Hammer FD3020 Circuit Breaker 20A FD 35k 240/480/600VAC 250VDC 3Pole

  $294.12 Original price was: $294.12.$249.98Current price is: $249.98.
• Sale!

  Cutler-Hammer FDB2010L Circuit Breaker 10A FDB 5k 240/480/600VAC 250VDC 2 Pole

  $529.42 Original price was: $529.42.$449.96Current price is: $449.96.
• Sale!

  Cutler-Hammer EHD3100L Industrial Circuit Breaker 100A Ser C 480VAC 3 POLE

  $408.25 Original price was: $408.25.$346.97Current price is: $346.97.
• Sale!

  Westinghouse FB3040L Circuit Breaker 40A 600VAC 3 POLE

  $170.59 Original price was: $170.59.$144.99Current price is: $144.99.