Square D
Square D 20A 10kA 120V Industrial Circuit Breake
Square D 20A 10kA 120V Industrial Circuit Breaker Electrical Component Part
Only 1 left
Free shippingShips next business day
$8.89
Circuit Breakers & Accessories
833 listings · 821 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
Cutler-Hammer
SNT1RP12K
Eaton Cutler-Hammer SNT1RP12K F-Frame Shunt Trip 208-380VAC 110-127VDC Industria
Only 1 left
Free shippingShips next business day
$224.89
Square D
AD-6378
Square D AD-6378 Circuit Breaker 20A 240V 10kA Industrial Electrical Part Spare
Only 1 left
Free shippingShips next business day
$14.99
Square D
QOB3100
Square D QOB3100 10kA 240V 100 Amp
Only 1 left
Free shippingShips next business day
$21.95
Allen-Bradley
1492-CB3
Allen-Bradley 1492-CB3 Series C Circuit Breaker 2A 3/4HP 480/277V 3PH Industrial
Only 1 left
Free shippingShips next business day
$6.89
Eaton
LT360033
Eaton LT360033 ELECTRONIC TRIP UNIT Breaker Industrial Electrical Component
Only 1 left
Free shippingShips next business day
$1,099.99
Allen-Bradley
1492-CB3
Allen-Bradley 1492-CB3 H200 Series Circuit Breaker 20A 10HP Industrial Compo
Only 4 left
Free shippingShips next business day
$6.89
Square D
FHP360151212
Square D FH 15 A FHP360151212 Circuit Breaker
In stock
Free shippingShips next business day
$799.95
Industrial part
2C12790G06
Shunt Trip 2C12790G06 110/127 VAC 110/125 VDC
Only 1 left
Free shippingShips next business day
$2,004.95
Allen-Bradley
140M-C2E-B40
Allen Bradley 140M-C2E-B40 SER C
Only 2 left
Free shippingShips next business day
$23.95
Eaton
CB12D12
Eaton FAZ-C 3/1 CB12D12 277VAC 10kA Circuit Breaker
Only 5 left
Free shippingShips next business day
$6.95
Allen-Bradley
140M-C2E-B25
Allen Bradley 140M-C2E-B25 SER C 6kV 50/60HZ 20A
In stock
Free shippingShips next business day
$26.95
Fuji Electric
EW50RAGU-3P050
Fuji EW50RAGU-3P050 Earth Leakage Circuit Breaker 50 Amp 50A 3-POLE
Only 2 left
Free shippingShips next business day
$91.95
Allen-Bradley
140M-C2E-B16
Allen Bradley 140M-C2E-B16 SER B
In stock
Free shippingShips next business day
$11.95
Allen-Bradley
140M-C2E-B40
Allen Bradley 140M-C2E-B40 SER B
In stock
Free shippingShips next business day
$13.95
Mitsubishi
NF30-FAU
Mitsubishi NF30-FAU No Fuse Breaker 5A 2-Pole 250VAC Industrial Electrical OEM
Only 1 left
Free shippingShips next business day
$7.89
Allen-Bradley
140M-C2E-B63
Allen Bradley Class 10 140M-C2E-B63 SER C
Only 2 left
Free shippingShips next business day
$29.95
Eaton
FAZ-D25/3-RT
Eaton FAZ-D25/3-RT Circuit Breaker 415V 50/60HZ 3 Pole Unit
In stock
Free shippingShips next business day
$38.95
Fuji Electric
SA603RCUL
Fuji Electric SA603RCUL 600A Auto Breaker 600AF 50/60Hz 8KV AC 690VDC 250V Spare
Only 1 left
Free shippingShips next business day
$799.99
Allen-Bradley
140M-C2E
Allen Bradley 140M-C2E 140M-C2E-C10 SER B
Only 2 left
Free shippingShips next business day
$25.95
Eaton
Eaton NZM 1 NZM B1 Circuit Breaker 690V 6kV
Eaton NZM 1 NZM B1 Circuit Breaker 690V 6kV
Only 3 left
Free shippingShips next business day
$66.95
ABB
T1N
ABB Sace T1N 100 3 Pole Circuit Breaker
Only 1 left
Free shippingShips next business day
$24.95
Eaton
PKZM0-6.3XTPR6P3BC1
Eaton PKZM0-6.3XTPR6P3BC1
Only 1 left
Free shippingShips next business day
$19.95
Fuji Electric
SA52RC
Fuji Electric SA52RC 10A 2-Pole Circuit Breaker BB2BRC Bracket Industrial OEM
Only 2 left
Free shippingShips next business day
$84.99
Get a quote on Circuit Breakers & Accessories
Need more units than we list, a part you don't see here, or prices for a whole list? Send us the part numbers and quantities – we reply within 1 hour during business hours (Mon–Fri 9–3:30 CT).
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.