Square D
FAL360501042
Square D Thermal-Magnetic Circuit Breaker FAL360501042 Series 2 50AMP 24V 400MA
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$139.99
Circuit Breakers & Accessories
833 listings · 822 in stock
833 circuit breakers & accessories listings from the brands you use, each one photographed. Free shipping in the lower 48.
Weekly new-arrivals email for Circuit Breakers & Accessories
ABB
S202-B16
ABB S202-B16 2CDS252001R0165 System Pro M Compact Circuit Breaker 2P 16A B Curve
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$23.89
Westinghouse
EB2020
Westinghouse EB2020 Circuit Breaker 20 Amp 2 Pole 240VAC 125/250VDC 4990D03G19
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$19.89
Westinghouse
KT3400T
Westinghouse KT3400T 400A 3 Pole Thermal Magnetic Trip Unit KD HKD KDC Breaker
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$94.89
Areva
FX22
Areva T&D VL 960 581 002 OP4-5 Spare Block for FX22 Circuit Breaker 120 771
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$3,033.89
Square D
FA14020A
Square D FA14020A Circuit Breaker 1 Pole 20 Amp 277VAC Type FA I-Line Electrical
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$20.89
Eaton
MST2 2A11791G02
Eaton MST2 2A11791G02 Shunt Trip Field Option Kit 208-240VAC 220-250VDC Breaker
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$359.89
Westinghouse
EHD3040
Westinghouse EHD3040 Series C Circuit Breaker EHD14K 40A 480V 3 Pole Industrial
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$53.89
Westinghouse
EHD3015
Westinghouse EHD3015 Series C Circuit Breaker EHD14K 15A 480V 3 Pole Industrial
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$21.89
Westinghouse
EHD3020
Westinghouse EHD3020 Series C Circuit Breaker EHD14K 20A 480V 3 Pole Industrial
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$26.89
ABB
S3N
ABB SACE Isomax S3N 40A 3 Pole Circuit Breaker with Rotary Handle Operator Aux
In stock
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$179.89
Cutler-Hammer
PM3FI480
Eaton Cutler-Hammer PM3FI480 Power Metering Module INCOM 480V 69D2651G04 Breaker
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$148.89
Eaton
SES-6622
Eaton Heinemann SES-6622 CD6-A3-DU 6 Pole Circuit Breaker 100A 20A 240V 50/60Hz
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$998.89
Cutler-Hammer
HMCP007C0C
Cutler-Hammer HMCP007C0C Series C Motor Circuit Protector 7 Amp 3 Pole 600VAC
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$23.89
Westinghouse
QC1289C30G04
Westinghouse Quicklag C QC1289C30G04 3 Pole Circuit Breaker 240VAC 10kA Panel
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$498.89
Phoenix Contact
0902098
Phoenix Contact 0902098 TMC 61C 16A Thermal Magnetic Circuit Breaker 277VAC 1P
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$13.89
Siemens
Q120
Siemens Q120 Circuit Breaker 20A 1 Pole 120/240V Type QP 10kAIC Plug In Panel
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$9.89
Westinghouse
LA3600F
Westinghouse LA3600F 600A 3 Pole Circuit Breaker 600V 1A1B Aux Switch Industrial
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$192.89
Square D
FY-14020-C
Square D FY-14020-C FY14020C 20A 1 Pole 277V I-Line Circuit Breaker Plug In
In stock
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$9.89
Square D
FY-14020-B
Square D FY-14020-B FY14020B 20A 1 Pole 277V I-Line Circuit Breaker Plug In
In stock
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$9.89
Square D
FY-14020-A
Square D FY-14020-A FY14020A 20A 1 Pole 277V I-Line Circuit Breaker Plug In
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$9.89
Square D
FHL360901121
Square D FHL360901121 Thermal-Magnetic Circuit Breaker 3 Pole 90A 600V Series 2
Only 1 left
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$1,904.89
ITE
EF3-A010
ITE Siemens EF3-A010 Circuit Breaker 10A 3 Pole 600VAC Nuclear QA Level B TVA
In stock
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$16.89
Square D
FAL341001121
Square D FAL341001121 100A 3 Pole 480V Circuit Breaker Undervoltage Trip 120V
Only 1 left
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$140.89
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Guides for Circuit Breakers & Accessories
- Circuit protectionMolded Case Circuit Breaker Ratings & ReplacementsFrame size, trip rating, interrupting rating (kA), voltage and slash ratings, trip units and mounting – and a checklist for a safe replacement.
- Parts identificationHow to Read Breaker & VFD Nameplates and Date CodesFrame, trip and interrupting ratings on breakers; input, output, duty ratings and series on drives – and where to look for the date of manufacture.