40 Amp

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Circuit Breaker 40 Amp 2 Pole Standard Trip 240 Volts Single Phase 2 Inch 1 Pack
Circuit Breaker 40 Amp 2 Pole Standard Trip 240 Volts Single Phase 2 Inch 1 Pack
$19.77
quality
B340 SIEMENS 3 POLE 40AMP BOLT ON NEW
B340 SIEMENS 3 POLE 40AMP BOLT ON NEW
$51.99
quality
EHD2040 Cutler Hammer Circuit Breaker 2 Pole 40 Amp 480V New In Box
EHD2040 Cutler Hammer Circuit Breaker 2 Pole 40 Amp 480V New In Box
$208.01
quality
SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240
SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240
$11.00
quality
Square D Type QO 40 amp double pole Circuit Breaker 120 240 volt
Square D Type QO 40 amp double pole Circuit Breaker 120 240 volt
$18.00
quality
Westinghouse 40 Amp Circuit Breaker Cat EB3040 240 V
Westinghouse 40 Amp Circuit Breaker Cat EB3040 240 V
$70.00
quality
GE THED124040 CIRCUIT BREAKER 40 AMP 480 VOLT 2 POLE FACTORY RECONDITIONED
GE THED124040 CIRCUIT BREAKER 40 AMP 480 VOLT 2 POLE FACTORY RECONDITIONED
$29.88
quality
Zinsco 40 amp RC3840 2p 40a 120 240v Circuit Breaker Used 1 year Warranty
Zinsco 40 amp RC3840 2p 40a 120 240v Circuit Breaker Used 1 year Warranty
$36.00
quality
FAZ CIRCUIT BREAKER G 40 A 3 POLE 40A 40 A AMP 220 380 AC
FAZ CIRCUIT BREAKER G 40 A 3 POLE 40A 40 A AMP 220 380 AC
$15.00
quality
Eaton Cutler Hammer 40 Amp 2 Pole Circuit Breaker CHF240CS
Eaton Cutler Hammer 40 Amp 2 Pole Circuit Breaker CHF240CS
$14.69
quality
NEW EATON CUTLER HAMMER CIRCUIT BREAKER JW3125V 3P 125A AMP SERIES C
NEW EATON CUTLER HAMMER CIRCUIT BREAKER JW3125V 3P 125A AMP SERIES C
$500.00
quality
WESTINGHOUSE QBH QBH3040 3 POLE 40 AMP BREAKER
WESTINGHOUSE QBH QBH3040 3 POLE 40 AMP BREAKER
$45.00
quality
Siemens ED43B040 40 Amp 3 Pole Circuit Breaker New In Box
Siemens ED43B040 40 Amp 3 Pole Circuit Breaker New In Box
$157.95
quality
General Electric TED124040 CIRCUIT BREAKER 40AMP 2POLE 480VAC
General Electric TED124040 CIRCUIT BREAKER 40AMP 2POLE 480VAC
$62.99
quality
Lot of 3 New Cerus Mini Circuit Breaker 1 Pole 40 Amp Din Rail Mountable
Lot of 3 New Cerus Mini Circuit Breaker 1 Pole 40 Amp Din Rail Mountable
$45.00
quality
NEW 100 Amp 20 Space 40 Circuit Indoor Main Plug On Neutral Breaker Load Center
NEW 100 Amp 20 Space 40 Circuit Indoor Main Plug On Neutral Breaker Load Center
$76.95
quality
Square D 40 amp Circuit Breaker FAL 34040 Used T O
Square D 40 amp Circuit Breaker FAL 34040 Used T O
$32.50
quality
SQUARE D FAL24040 2 P 40 AMP 240 VOLT CIRCUIT BREAKER
SQUARE D FAL24040 2 P 40 AMP 240 VOLT CIRCUIT BREAKER
$60.00
quality
Square D Cat QO340 3 Pole 40 Amp 240 Volt Circuit Breaker
Square D Cat QO340 3 Pole 40 Amp 240 Volt Circuit Breaker
$30.50
quality
Cutler Westinghouse BQC BRD BQ2402120 1 pole 20 amp 2 pole 40 amp quad breaker
Cutler Westinghouse BQC BRD BQ2402120 1 pole 20 amp 2 pole 40 amp quad breaker
$30.00
quality
1 ZINSCO Type QC 2 Pole 40 Amp 240V CIRCUIT BREAKER thick
1 ZINSCO Type QC 2 Pole 40 Amp 240V CIRCUIT BREAKER thick
$50.00
quality
Cutler Hammer CH240 Circuit Breaker 2 Pole 40 Amp 120 240V
Cutler Hammer CH240 Circuit Breaker 2 Pole 40 Amp 120 240V
$15.00
quality
GE GENERAL ELECTRIC 40 AMP CIRCUIT BREAKER TEB132040
GE GENERAL ELECTRIC 40 AMP CIRCUIT BREAKER TEB132040
$40.00
quality
Unique Breakers UBIFO 2 Pole 40 Amp Stab Lok 120 240V Class CTL Circuit Breaker
Unique Breakers UBIFO 2 Pole 40 Amp Stab Lok 120 240V Class CTL Circuit Breaker
$30.00
quality
Square D by Schneider Electric QOB220 20 Amp 2P Circuit Breaker 40c NEW
Square D by Schneider Electric QOB220 20 Amp 2P Circuit Breaker 40c NEW
$12.99
quality
SIEMENS ITE QT2 4040 EQ T 40 Amp Quad Breaker 120 240 V
SIEMENS ITE QT2 4040 EQ T 40 Amp Quad Breaker 120 240 V
$50.00
quality
1 NEW SIEMENS I T E BQ BQ3B040 CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 240V
1 NEW SIEMENS I T E BQ BQ3B040 CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 240V
$28.50
quality
Fpe 2 Pole 40 Amp thin Type Nc stab lok red circuit Breaker federal pacific
Fpe 2 Pole 40 Amp thin Type Nc stab lok red circuit Breaker federal pacific
$7.89
quality
GENERAL ELECTRIC GE CIRCUIT BREAKER TED136040 40A AMP 3 POLE
GENERAL ELECTRIC GE CIRCUIT BREAKER TED136040 40A AMP 3 POLE
$40.00
quality
FPE 2 Pole 40 Amp Thick Type NA circuit Breaker Red Handle Federal pacific
FPE 2 Pole 40 Amp Thick Type NA circuit Breaker Red Handle Federal pacific
$12.00
quality
Square D 40 Amp Circuit Breaker
Square D 40 Amp Circuit Breaker
$12.00
quality
GE Circuit Breaker Thin Double Pole 40AMPS 10 each
GE Circuit Breaker Thin Double Pole 40AMPS 10 each
$59.99
quality
Argus CBI DA3CA1 ND1ZXBL CS4000X 1 DDA130059 40Amp Circuit Breaker 1 pole
Argus CBI DA3CA1 ND1ZXBL CS4000X 1 DDA130059 40Amp Circuit Breaker 1 pole
$9.99
quality
Cutler Hammer FD3040 3 POLE 40 AMP 600 VOLT Circuit Breaker WARRANTY
Cutler Hammer FD3040 3 POLE 40 AMP 600 VOLT Circuit Breaker WARRANTY
$100.00
quality
GE THQB32040 3 POLE 40 AMP 240 VOLT BOLT ON Circuit Breaker WARRANTY
GE THQB32040 3 POLE 40 AMP 240 VOLT BOLT ON Circuit Breaker WARRANTY
$25.00
quality
ITE BQCH3B040 40 Amp3 pole 480 volt Circuit Breaker warranty
ITE BQCH3B040 40 Amp3 pole 480 volt Circuit Breaker warranty
$70.00
quality
Siemens ITE HED43B040 3 POLE 40 AMP 480 Circuit BreakerWARRANTY
Siemens ITE HED43B040 3 POLE 40 AMP 480 Circuit BreakerWARRANTY
$90.00
quality
GE THQL 2140 THQL2140 40 AMP 2 POLE 120 240 VAC CIRCUIT BREAKER SNAP CLIP IN
GE THQL 2140 THQL2140 40 AMP 2 POLE 120 240 VAC CIRCUIT BREAKER SNAP CLIP IN
$6.00
quality
 NEW SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240  TYPE QO  US 25
NEW SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240 TYPE QO US 25
$12.50
quality
Cutler Hammer Breaker Type BA 40A 40 A Amp 1 POLE Lot of 2 Used
Cutler Hammer Breaker Type BA 40A 40 A Amp 1 POLE Lot of 2 Used
$5.00
quality
ASSORTED SQUARE D CIRCUIT BREAKERS 30 40 AND 15 AMP
ASSORTED SQUARE D CIRCUIT BREAKERS 30 40 AND 15 AMP
$30.00
quality
MO 1908 GE TED134040 CIRCUIT BREAKER 40 AMP 480 VAC 3 POLE
MO 1908 GE TED134040 CIRCUIT BREAKER 40 AMP 480 VAC 3 POLE
$15.00
quality
Siemens BE240 40 Amp 2 Pole Equipment Ground Fault Circuit Breaker NEW
Siemens BE240 40 Amp 2 Pole Equipment Ground Fault Circuit Breaker NEW
$135.00
quality
SQD FA32040 3 POLE 40 AMP 240 VOLT I LINE Circuit Breaker
SQD FA32040 3 POLE 40 AMP 240 VOLT I LINE Circuit Breaker
$59.00
quality
EATON CUTLER HAMMER Type HFD Circuit Breaker 3 Pole 40 Amp HFD3040
EATON CUTLER HAMMER Type HFD Circuit Breaker 3 Pole 40 Amp HFD3040
$240.00
quality
MO 1909 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1909 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
MO 1910 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1910 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
LOT OF 2 FUJI ELECTRIC EG53FC CIRCUIT BREAKERS 1 40 AMP  1 50 AMP
LOT OF 2 FUJI ELECTRIC EG53FC CIRCUIT BREAKERS 1 40 AMP 1 50 AMP
$45.00
quality
 Westinghouse 40AMP 3 POLE BREAKER F FRAME  WA 59
Westinghouse 40AMP 3 POLE BREAKER F FRAME WA 59
$24.99
quality
MO 1911 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1911 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
MO 1912 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1912 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
MO 1913 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1913 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
Siemens 40 amp 2 pole boil in shunt trip breaker
Siemens 40 amp 2 pole boil in shunt trip breaker
$35.00
quality
Federal Pacific 40 amp Breaker
Federal Pacific 40 amp Breaker
$14.99
quality
FEDERAL PACIFIC NE 231040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 231040
FEDERAL PACIFIC NE 231040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 231040
$100.00
quality
MO 1914 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1914 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
TELEMECANIQUE MOTOR PROTECTOR CIRCUIT BREAKER GV3M40 25 40AMP NIB
TELEMECANIQUE MOTOR PROTECTOR CIRCUIT BREAKER GV3M40 25 40AMP NIB
$99.99
quality
Cutler Hammer FS360040A 40 Amp Circuit Breaker Q2
Cutler Hammer FS360040A 40 Amp Circuit Breaker Q2
$60.00
quality
GE THQL2140 40A 120 240V 2 Pole Plug In Circuit Breaker 40 amp
GE THQL2140 40A 120 240V 2 Pole Plug In Circuit Breaker 40 amp
$14.00
quality
GE GENERAL ELECTRIC BREAKER TED136045WL 45A A AMP 600Vac 3 POLE w 1494D N40
GE GENERAL ELECTRIC BREAKER TED136045WL 45A A AMP 600Vac 3 POLE w 1494D N40
$74.99
quality
Lot of 3 New Cerus LS Din Rail Mount Mini Circuit Breaker 2 pole 40 amp
Lot of 3 New Cerus LS Din Rail Mount Mini Circuit Breaker 2 pole 40 amp
$78.00
quality
GE Type THHQB Circuit Breaker 3 Pole 40 Amp
GE Type THHQB Circuit Breaker 3 Pole 40 Amp
$40.00
quality
NOS I T E SIEMENS TYPE QP 40AMP 3 POLE CIRCUIT BREAKER FREE SHIPPING
NOS I T E SIEMENS TYPE QP 40AMP 3 POLE CIRCUIT BREAKER FREE SHIPPING
$29.99
quality
Square D FAL 24040 40 Amp 2 Pole 480 VAC Circuit Breaker FAL24040 Yellow Label
Square D FAL 24040 40 Amp 2 Pole 480 VAC Circuit Breaker FAL24040 Yellow Label
$49.00
quality
SIEMENS Q240 40 AMP 2 Pole Circuit Breaker
SIEMENS Q240 40 AMP 2 Pole Circuit Breaker
$9.97
quality
SQUARE D FA34040 CIRCUIT BREAKER 40 AMP 480 VAC 3 POLE 40A I LINE BREAKER BLACK
SQUARE D FA34040 CIRCUIT BREAKER 40 AMP 480 VAC 3 POLE 40A I LINE BREAKER BLACK
$124.95
quality
GE 40 Amp 1 Pole Type R General Circuit Breaker
GE 40 Amp 1 Pole Type R General Circuit Breaker
$15.20
quality
x Cutler Hammer 40 amp circuit breaker EHD3040 480 VAC 3PH blue label 14K
x Cutler Hammer 40 amp circuit breaker EHD3040 480 VAC 3PH blue label 14K
$84.00
quality
GENERAL ELECTRIC TEY240 CIRCUIT BREAKER 40 AMP 2 POLE
GENERAL ELECTRIC TEY240 CIRCUIT BREAKER 40 AMP 2 POLE
$58.00
quality
SIEMENS CIRCUIT BREAKER 40 AMP CED63B040 TYPE CED6
SIEMENS CIRCUIT BREAKER 40 AMP CED63B040 TYPE CED6
$500.00
quality
VERY OLD CUTLER HAMMER 2 Pole 40 amp Breaker Type XO
VERY OLD CUTLER HAMMER 2 Pole 40 amp Breaker Type XO
$0.99
quality
Cutler Hammer 40 amp circuit breaker GHB2040 NIB 480 277 VAC 2 pole new in box
Cutler Hammer 40 amp circuit breaker GHB2040 NIB 480 277 VAC 2 pole new in box
$112.00
quality
Westinghouse BR240 2 Pole 40 Amp Circuit Breaker
Westinghouse BR240 2 Pole 40 Amp Circuit Breaker
$14.95
quality
Square D QOB3401021 Circuit Breaker With Shunt Trip 40 Amp 3 Pole 120 240V
Square D QOB3401021 Circuit Breaker With Shunt Trip 40 Amp 3 Pole 120 240V
$61.00
quality
NEW SIEMENS CIRCUIT BREAKER NCX3B040 40 AMP 480 VOLT 50 60 HZ
NEW SIEMENS CIRCUIT BREAKER NCX3B040 40 AMP 480 VOLT 50 60 HZ
$139.95
quality
NEW WESTINGHOUSE HFB3040 40 AMP 600 V BREAKER
NEW WESTINGHOUSE HFB3040 40 AMP 600 V BREAKER
$79.00
quality
E3040 Westinghouse Type E Circuit Breaker 3 Pole 40 Amp 240V
E3040 Westinghouse Type E Circuit Breaker 3 Pole 40 Amp 240V
$89.99
quality
Square D F126040AB 40 Amp I Limiter Industrial Circuit Breaker
Square D F126040AB 40 Amp I Limiter Industrial Circuit Breaker
$149.00
quality
ABB SACE TMAX T1N 40 Amp Circuit Breaker T1N040TL
ABB SACE TMAX T1N 40 Amp Circuit Breaker T1N040TL
$69.00
quality
HFD2040L Cutler Hammer Circuit Breaker 2 pole 40 amp 600V New In Box
HFD2040L Cutler Hammer Circuit Breaker 2 pole 40 amp 600V New In Box
$469.92
quality
QO240 1021 Square D SQD Type QO 120V Shunt Trip Breaker 2 Pole 40 Amp 240V
QO240 1021 Square D SQD Type QO 120V Shunt Trip Breaker 2 Pole 40 Amp 240V
$79.99
quality
ITE EF3 B040 3 POLE 40 AMP 600 VOLT CIRCUIT BREAKER used
ITE EF3 B040 3 POLE 40 AMP 600 VOLT CIRCUIT BREAKER used
$42.50
quality
 MURRAY 20 40 AMP ONE 2 POLE TWO 1 POLE CIRCUIT BREAKER MP T MP24020 VS 529
MURRAY 20 40 AMP ONE 2 POLE TWO 1 POLE CIRCUIT BREAKER MP T MP24020 VS 529
$13.50
quality
 GENERAL ELECTRIC 40 AMP 2 POLE BREAKER THED126040  YC 275A
GENERAL ELECTRIC 40 AMP 2 POLE BREAKER THED126040 YC 275A
$55.50
quality
 GENERAL ELECTRIC 40 AMP 3 POLE CIRCUIT BREAKER TED134040  WJ 126
GENERAL ELECTRIC 40 AMP 3 POLE CIRCUIT BREAKER TED134040 WJ 126
$42.50
quality
AIRPAX SENSATA 40 AMP HYBRID BREAKER LMLK1 1RS4 29172 40 40A 80 MAX V
AIRPAX SENSATA 40 AMP HYBRID BREAKER LMLK1 1RS4 29172 40 40A 80 MAX V
$24.95
quality
1 NEW SQUARE D QOB QOB240 40 AMP 2 POLE 240 VAC 2P 240V 40A
1 NEW SQUARE D QOB QOB240 40 AMP 2 POLE 240 VAC 2P 240V 40A
$18.75
quality
Allen Bradley 2 Pole 40 Amp 120 240 Volt Circuit Breaker Catalog  1492 MCAA240
Allen Bradley 2 Pole 40 Amp 120 240 Volt Circuit Breaker Catalog 1492 MCAA240
$19.75
quality
GEWISS GW92 611 1 Pole 40 AMP Curve C MT100 230 400v 50 60Hz
GEWISS GW92 611 1 Pole 40 AMP Curve C MT100 230 400v 50 60Hz
$45.00
quality
Used SQUARE D QO QO340 3 POLE 40 AMP BREAKER 3P 40A 240V
Used SQUARE D QO QO340 3 POLE 40 AMP BREAKER 3P 40A 240V
$25.00
quality
TD125HU FMU 40 Amp 3p 65k  480V Breaker With 12v Volt Shunt
TD125HU FMU 40 Amp 3p 65k 480V Breaker With 12v Volt Shunt
$427.52
quality
ITE Circuit Breaker EH1 B040 1 Pole 40 Amp 277VAC
ITE Circuit Breaker EH1 B040 1 Pole 40 Amp 277VAC
$14.99
quality
Siemens ITE ED43B040 Sentron Series Circuit Breaker 40 Amp 480 VAC 3 Pole
Siemens ITE ED43B040 Sentron Series Circuit Breaker 40 Amp 480 VAC 3 Pole
$69.95
quality
Carling Technologies CA3 B0 34 640 321 C 40 Amp 277 V Magnetic Circuit Breaker
Carling Technologies CA3 B0 34 640 321 C 40 Amp 277 V Magnetic Circuit Breaker
$75.00
quality
Square D HJL36040 Breaker 40 Amp 65 kAIR Lug To Lug NEW
Square D HJL36040 Breaker 40 Amp 65 kAIR Lug To Lug NEW
$295.00
quality
Westinghouse 40 Amp Circuit Breaker EHB3040
Westinghouse 40 Amp Circuit Breaker EHB3040
$35.00
quality
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40 Amp

40+Amp

Frequently Asked Questions...

How do I determine what gauge wire is attached to one of my breakers?

My central air unit requires 35 AMPs, an inspector said I have 10 gauge wire attached to a 40 AMP breaker and is making me replace the wire. The house is 8 years old, and the breaker has never been changed and has passed inspection when the house was built. My basement has been finished and to run a new wire from the breaker box to the unit is going to be nearly impossible. Any help would be great. I want to make sure the inspector is sure its 10 gauge...thanks


Best Answer...

Answer:

The nat elec code lists the wire gaufae for amps as follows
12 ga is to 20 amps
10 ga is it 30 amps
8 ga is to 40 amps
6 ga is to 65 amps

The inspector may have made a mistake but i doubt it. the current 8 ga wire is stranded because it is so thick While 10 ga is a single strand. It may have been wired wrong all along.


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