40 Amp

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Allen Bradley 1492 CB2G400 Circuit Breaker 40 Amp 2 Pole
Allen Bradley 1492 CB2G400 Circuit Breaker 40 Amp 2 Pole
$40.00
quality
 CUTLER HAMMER 40 AMP 2 POLE CIRCUIT BREAKER CH240 METAL TABS VS 446
CUTLER HAMMER 40 AMP 2 POLE CIRCUIT BREAKER CH240 METAL TABS VS 446
$5.50
quality
Siemens JXD63B40 3 POLE 400 AMP 600 VOLT Circuit Breaker NEW WARRANTY
Siemens JXD63B40 3 POLE 400 AMP 600 VOLT Circuit Breaker NEW WARRANTY
$750.00
quality
Connecticut Electric Type UBI F 40 Amp Circuit Breaker UBIF 240N THIN Series
Connecticut Electric Type UBI F 40 Amp Circuit Breaker UBIF 240N THIN Series
$39.95
quality
Connecticut Electric Type UBI F 40 Amp Circuit Breaker UBIF 240N
Connecticut Electric Type UBI F 40 Amp Circuit Breaker UBIF 240N
$39.95
quality
FPE NA340 NA3P40 40 Amp Stablok Circuit Breaker NEW
FPE NA340 NA3P40 40 Amp Stablok Circuit Breaker NEW
$135.00
quality
GE TEB132040WL 3 POLE 40 AMP 240 AMP Circuit Breaker NEW
GE TEB132040WL 3 POLE 40 AMP 240 AMP Circuit Breaker NEW
$90.00
quality
NEW Cutler Hammer GD 22K GD3040 3 Pole 40 amp Circuit Breaker Red Label
NEW Cutler Hammer GD 22K GD3040 3 Pole 40 amp Circuit Breaker Red Label
$62.00
quality
Cutler Hammer CH24040 AMP2 POLE Circuit BreakersNEW
Cutler Hammer CH24040 AMP2 POLE Circuit BreakersNEW
$15.00
quality
q340 40 amp three pole type qp circuit breaker
q340 40 amp three pole type qp circuit breaker
$58.82
quality
Zinsco QC400 Breaker Replacement 120 240 volt 40 amp 2 pole
Zinsco QC400 Breaker Replacement 120 240 volt 40 amp 2 pole
$45.00
quality
Challenger Q240 2 Pole 40 Amp Type QP Circuit Breaker
Challenger Q240 2 Pole 40 Amp Type QP Circuit Breaker
$14.99
quality
EATON CUTLER HAMMER GHB GHB3040 40 AMP 3P POLE 480V 1 YEAR WARRANTY
EATON CUTLER HAMMER GHB GHB3040 40 AMP 3P POLE 480V 1 YEAR WARRANTY
$79.99
quality
GE Model 40C 2 Pole 20Amp Circuit Breaker
GE Model 40C 2 Pole 20Amp Circuit Breaker
$4.99
quality
NEW GE THQP240 40 AMP DOUBLE POLE PLUG IN BREAKER
NEW GE THQP240 40 AMP DOUBLE POLE PLUG IN BREAKER
$8.99
quality
GE Model 40C 1 Pole 30Amp Circuit Breaker
GE Model 40C 1 Pole 30Amp Circuit Breaker
$3.99
quality
General Electric THQP240 40 AMP Circuit Breaker FREE SHIPPING
General Electric THQP240 40 AMP Circuit Breaker FREE SHIPPING
$8.59
quality
GE Model 40C 2 Pole 30Amp Circuit Breaker
GE Model 40C 2 Pole 30Amp Circuit Breaker
$4.99
quality
Zinsco R38 40 Breaker 120 240 volt 40 amp two pole common trip
Zinsco R38 40 Breaker 120 240 volt 40 amp two pole common trip
$40.00
quality
1 YEAR WARRANTY Federal Pacific NE231040 3 pole 40 amp circuit breaker
1 YEAR WARRANTY Federal Pacific NE231040 3 pole 40 amp circuit breaker
$39.99
quality
6 NEW CHALLENGER C240 2 POLE 40 AMP CIRCUIT BREAKERS
6 NEW CHALLENGER C240 2 POLE 40 AMP CIRCUIT BREAKERS
$33.99
quality
12 NEW SIEMENS CIRCUIT BREAKERS Q140 1 POLE 40 AMP 120 240 VOLT 60 HZ
12 NEW SIEMENS CIRCUIT BREAKERS Q140 1 POLE 40 AMP 120 240 VOLT 60 HZ
$29.95
quality
Cutler Hammer CH340 40 Amp 3 Pole 240 Volt Circuit Breaker WARRANTY
Cutler Hammer CH340 40 Amp 3 Pole 240 Volt Circuit Breaker WARRANTY
$40.00
quality
1 SIEMENS ED63A040 ED6 ETI CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 600V 600 VOLT
1 SIEMENS ED63A040 ED6 ETI CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 600V 600 VOLT
$45.50
quality
Set of 2 Square D QO 40 Amp Single Pole Circuit Breakers Guaranteed to Work
Set of 2 Square D QO 40 Amp Single Pole Circuit Breakers Guaranteed to Work
$14.39
quality
Set of 2 Square D QO 40 Amp Single Pole Circuit Breakers Guaranteed to Work
Set of 2 Square D QO 40 Amp Single Pole Circuit Breakers Guaranteed to Work
$14.39
quality
hom240gfic homeline 40 amp two pole gfci circuit breaker
hom240gfic homeline 40 amp two pole gfci circuit breaker
$139.52
quality
New Breaker Siemens Q240 40 Amp 2 Pole 120 240v Type QP
New Breaker Siemens Q240 40 Amp 2 Pole 120 240v Type QP
$11.99
quality
 SQUARE D 40 AMP 3 POLE I LINE CIRCUIT BREAKER FA 36040  YB 123
SQUARE D 40 AMP 3 POLE I LINE CIRCUIT BREAKER FA 36040 YB 123
$39.50
quality
ITE QP3 B040 40Amp Circuit Breaker 240VAC 3Pole Used
ITE QP3 B040 40Amp Circuit Breaker 240VAC 3Pole Used
$22.99
quality
American Circuit Breaker 3pole 40amp NE234040 UNUSED
American Circuit Breaker 3pole 40amp NE234040 UNUSED
$200.00
quality
Airpax 40 Amp Circuit Breaker 1322140100 209 1 29880 40 LR26229
Airpax 40 Amp Circuit Breaker 1322140100 209 1 29880 40 LR26229
$19.75
quality
Cutler Hammer EATON BAB 3 pole 40 amp 240v BAB3040H BA Circuit Breaker
Cutler Hammer EATON BAB 3 pole 40 amp 240v BAB3040H BA Circuit Breaker
$25.00
quality
Siemens Q340H 40 Amp 240 Volt 3 Pole Circuit Breaker NEW
Siemens Q340H 40 Amp 240 Volt 3 Pole Circuit Breaker NEW
$85.00
quality
CUTLER HAMMER EC2040 2 POLE 40 AMP 240 VOLT CIRCUIT BREAKER NEW
CUTLER HAMMER EC2040 2 POLE 40 AMP 240 VOLT CIRCUIT BREAKER NEW
$85.00
quality
Circuit Breaker Siemens QF240 40 Amp 2 Pole 120 240V GFCI
Circuit Breaker Siemens QF240 40 Amp 2 Pole 120 240V GFCI
$59.99
quality
CUTLER HAMMER FD3040V CIRCUIT BREAKER 40 AMP 600 VOLT 3 POLE NEW
CUTLER HAMMER FD3040V CIRCUIT BREAKER 40 AMP 600 VOLT 3 POLE NEW
$388.88
quality
QO240VH Square D Circuit Breaker 2 Pole 40 Amp 240 Volt
QO240VH Square D Circuit Breaker 2 Pole 40 Amp 240 Volt
$54.43
quality
New Siemens Q240 40 Amp 2 Pole 240 Volt Circuit Breaker
New Siemens Q240 40 Amp 2 Pole 240 Volt Circuit Breaker
$11.99
quality
Siemens Q240 40 Amp 240 Volt 2 Pole Circuit Breaker NEW
Siemens Q240 40 Amp 240 Volt 2 Pole Circuit Breaker NEW
$10.00
quality
Used Siemens Din Rail Mount CQD140 1 pole 40 amp Circuit Breaker
Used Siemens Din Rail Mount CQD140 1 pole 40 amp Circuit Breaker
$42.85
quality
New Siemens Din Rail Mount CQD140 1 pole 40 amp Circuit Breaker
New Siemens Din Rail Mount CQD140 1 pole 40 amp Circuit Breaker
$56.81
quality
USED SQUARE D CIRCUIT BREAKER FA36040 40 AMP
USED SQUARE D CIRCUIT BREAKER FA36040 40 AMP
$44.25
quality
NEW Square D QOB 1p 40a QOB140 1 Pole 40 Amp 120V Bolt In Circuit Breaker SqD
NEW Square D QOB 1p 40a QOB140 1 Pole 40 Amp 120V Bolt In Circuit Breaker SqD
$11.95
quality
Surplus Siemens Din Rail Mount CQD140 1 pole 40 amp Circuit Breaker
Surplus Siemens Din Rail Mount CQD140 1 pole 40 amp Circuit Breaker
$47.13
quality
Square D FA36040 1021 I line Breaker Shunt trip 3 Pole 40 Amp 600 VAC Tested
Square D FA36040 1021 I line Breaker Shunt trip 3 Pole 40 Amp 600 VAC Tested
$205.19
quality
GE GENERAL ELECTRIC LP 7005 SINGLE 1 POLE 40 AMP CIRCUIT BREAKER TYPE THQL
GE GENERAL ELECTRIC LP 7005 SINGLE 1 POLE 40 AMP CIRCUIT BREAKER TYPE THQL
$30.00
quality
 MURRAY 40 AMP 2 POLE CIRCUIT BREAKER TYPE MP MP240 AA 92
MURRAY 40 AMP 2 POLE CIRCUIT BREAKER TYPE MP MP240 AA 92
$6.99
quality
ITE CIRCUIT BREAKER 1 POLE 40 AMP ET1161 TYPE ET 125 VOLT AC DC
ITE CIRCUIT BREAKER 1 POLE 40 AMP ET1161 TYPE ET 125 VOLT AC DC
$10.00
quality
RC3840 Zinsco Sylvania ZINSCO Type RC 38 2 Pole 40 Amp 120V 1 YEAR WARRANTY
RC3840 Zinsco Sylvania ZINSCO Type RC 38 2 Pole 40 Amp 120V 1 YEAR WARRANTY
$22.99
quality
GE General Electric 2 Pole 40 amp 240 volt Circuit breaker Cat THQL22040
GE General Electric 2 Pole 40 amp 240 volt Circuit breaker Cat THQL22040
$10.50
quality
SIEMENS SENTRON ED6 CIRCUIT BREAKER ED63B040 40AMP 600VOLT 3POLE
SIEMENS SENTRON ED6 CIRCUIT BREAKER ED63B040 40AMP 600VOLT 3POLE
$49.99
quality
WESTINGHOUSE HFA2040 CIRCUIT BREAKER 40 AMP 2 POLE 600 VAC 250 DC
WESTINGHOUSE HFA2040 CIRCUIT BREAKER 40 AMP 2 POLE 600 VAC 250 DC
$50.00
quality
Used Federal Pacific FPE NE224040 2 Pole 40 Amp 240 Volt Circuit Breaker
Used Federal Pacific FPE NE224040 2 Pole 40 Amp 240 Volt Circuit Breaker
$100.00
quality
40AMP DOUBLE POLE CLIP IN TYPE GENERAL ELECTRIC CIRCUIT BREAKER
40AMP DOUBLE POLE CLIP IN TYPE GENERAL ELECTRIC CIRCUIT BREAKER
$14.99
quality
NEW ITE SIEMENS BLH B340H 40 AMP 3 POLE BREAKER
NEW ITE SIEMENS BLH B340H 40 AMP 3 POLE BREAKER
$100.00
quality
40 Amp Auto Reset ATC ATO Blade Style Circuit Breakers 1 per pack
40 Amp Auto Reset ATC ATO Blade Style Circuit Breakers 1 per pack
$11.80
quality
General Electric GE Breaker TF136040 40A 40 A Amp 3P 600 VAC
General Electric GE Breaker TF136040 40A 40 A Amp 3P 600 VAC
$35.00
quality
SIEMENS SENTRON HHED6 CIRCUIT BREAKER HHED63B040 40AMP 600VOLT 3POLE NOB
SIEMENS SENTRON HHED6 CIRCUIT BREAKER HHED63B040 40AMP 600VOLT 3POLE NOB
$119.99
quality
NEW Square D QOB 2p 40a QOB240 Bolt In Circuit Breaker 2 Pole 40 Amp SqD
NEW Square D QOB 2p 40a QOB240 Bolt In Circuit Breaker 2 Pole 40 Amp SqD
$25.95
quality
NEW IN THE BOX SIEMENS 3RV1031 4HB10 3RV10314HB10 CIRCUIT BREAKER 40 50 AMP
NEW IN THE BOX SIEMENS 3RV1031 4HB10 3RV10314HB10 CIRCUIT BREAKER 40 50 AMP
$99.00
quality
ITE Gould BQ3 B040 Type BQ 3 Pole 40 Amp 240 Volt Bolt On Circuit Breaker
ITE Gould BQ3 B040 Type BQ 3 Pole 40 Amp 240 Volt Bolt On Circuit Breaker
$17.98
quality
Cutler Hammer FS320040A Circuit Breaker 40 AMP 240 VAC 3 Pole
Cutler Hammer FS320040A Circuit Breaker 40 AMP 240 VAC 3 Pole
$50.00
quality
Westinghouse FD3040L 40 Amp Circuit Breaker
Westinghouse FD3040L 40 Amp Circuit Breaker
$140.00
quality
AVATAR INSTRUMENTS SOFT START OPTION D2P 48 40 S 480V VOLTS 40A A AMPS USED
AVATAR INSTRUMENTS SOFT START OPTION D2P 48 40 S 480V VOLTS 40A A AMPS USED
$25.00
quality
x Square D 40 amp circuit breaker QO240 2 pole 120 240 VAC
x Square D 40 amp circuit breaker QO240 2 pole 120 240 VAC
$20.00
quality
nos cooper crouse hinds mh240 40 amp 2 pole circuit breaker
nos cooper crouse hinds mh240 40 amp 2 pole circuit breaker
$43.99
quality
Siemens Q240 40 Amp 2 Pole 240 Volt Circuit Breaker  New Free Shipping
Siemens Q240 40 Amp 2 Pole 240 Volt Circuit Breaker New Free Shipping
$10.69
quality
Fuji Electric Breaker SA52B 40 Amp 2 Pole 220V BB2BSB 040
Fuji Electric Breaker SA52B 40 Amp 2 Pole 220V BB2BSB 040
$22.95
quality
Siemens Q23040CT2 30 Amp Double Pole 40 Amp Double Pole 10 Kaic Circuit Breaker
Siemens Q23040CT2 30 Amp Double Pole 40 Amp Double Pole 10 Kaic Circuit Breaker
$31.77
quality
SIEMENS ITE Q340 NEW PLUG IN CIRCUIT BREAKER 3 POLE 40 AMP 120 VAC Box Of 4
SIEMENS ITE Q340 NEW PLUG IN CIRCUIT BREAKER 3 POLE 40 AMP 120 VAC Box Of 4
$149.40
quality
Square D QO240VH Circuit Breaker 2 Pole 40 Amp 240 Volt 22 KAIR
Square D QO240VH Circuit Breaker 2 Pole 40 Amp 240 Volt 22 KAIR
$39.95
quality
5 NEW CUTLER HAMMER 40 AMP CIRCUIT BREAKER 120 240 VAC 2 POLE BR240 LOT OF 5
5 NEW CUTLER HAMMER 40 AMP CIRCUIT BREAKER 120 240 VAC 2 POLE BR240 LOT OF 5
$39.99
quality
SQUARE D CIRCUIT BREAKER 40 AMP 480V 3 POLE EDB34040
SQUARE D CIRCUIT BREAKER 40 AMP 480V 3 POLE EDB34040
$95.00
quality
GE FCN36TE040R2 CIRCUIT BREAKER 40 AMP 600 VOLT 3 POLE NEW
GE FCN36TE040R2 CIRCUIT BREAKER 40 AMP 600 VOLT 3 POLE NEW
$143.88
quality
SQUARE D CIRCUIT BREAKER 40 AMP 480V 3 POLE EGB34040
SQUARE D CIRCUIT BREAKER 40 AMP 480V 3 POLE EGB34040
$125.00
quality
GE THQC 2 POLE 40 AMP DIN RAIL CIRCUIT BREAKER 120V 240V THQC2140WL
GE THQC 2 POLE 40 AMP DIN RAIL CIRCUIT BREAKER 120V 240V THQC2140WL
$19.57
quality
GE GENERAL ELECTRIC THQL32040 NEW CIRCUIT BREAKER 3 POLE 40 AMP 240 VAC
GE GENERAL ELECTRIC THQL32040 NEW CIRCUIT BREAKER 3 POLE 40 AMP 240 VAC
$42.19
quality
Westinghouse 40 AMPS 600 VOLTS FA3040 3 Poles USED MOLDED CASE CIRCUIT
Westinghouse 40 AMPS 600 VOLTS FA3040 3 Poles USED MOLDED CASE CIRCUIT
$135.00
quality
Siemens BQD 2 pole 40 amp 480y 277v BQD240 Circuit Breaker
Siemens BQD 2 pole 40 amp 480y 277v BQD240 Circuit Breaker
$29.00
quality
Siemens BQD 3 pole 40 amp 480v 277v BQD340 Circuit Breaker
Siemens BQD 3 pole 40 amp 480v 277v BQD340 Circuit Breaker
$70.00
quality
GE Circuit Breaker Switch 3 Pole NP245878H TED136V100 100Amp Amb Comp 600VAC 40C
GE Circuit Breaker Switch 3 Pole NP245878H TED136V100 100Amp Amb Comp 600VAC 40C
$75.00
quality
FUJI 3 pole 40 amp 480v SA103RAUL 40 Circuit Breaker
FUJI 3 pole 40 amp 480v SA103RAUL 40 Circuit Breaker
$75.00
quality
New Siemens ITE CQD240 Din Rail Mount 2 pole 40 amp Circuit Breaker
New Siemens ITE CQD240 Din Rail Mount 2 pole 40 amp Circuit Breaker
$138.60
quality
Used Siemens ITE CQD240 Din Rail Mount 2 pole 40 amp Circuit Breaker
Used Siemens ITE CQD240 Din Rail Mount 2 pole 40 amp Circuit Breaker
$100.00
quality
Surplus Siemens ITE CQD240 Din Rail Mount 2 pole 40 amp Circuit Breaker
Surplus Siemens ITE CQD240 Din Rail Mount 2 pole 40 amp Circuit Breaker
$118.70
quality
5 Cutler Hammer CH240 40 AMP 2 POLE Circuit Breakers NEW BOX OF 5
5 Cutler Hammer CH240 40 AMP 2 POLE Circuit Breakers NEW BOX OF 5
$60.00
quality
CUTLER HAMMER WESTINGHOUSE HFD Safety View Visa Breaker 40 Amp 3 Pole HFD3040S
CUTLER HAMMER WESTINGHOUSE HFD Safety View Visa Breaker 40 Amp 3 Pole HFD3040S
$200.00
quality
EATON CUTLER HAMMER 2 POLE 40 AMP CIRCUIT BREAKER HFD2040L
EATON CUTLER HAMMER 2 POLE 40 AMP CIRCUIT BREAKER HFD2040L
$189.95
quality
Siemens ED63B040 3 pole 40 amp 600v Circuit Breaker 1 YR WARRANTY
Siemens ED63B040 3 pole 40 amp 600v Circuit Breaker 1 YR WARRANTY
$59.99
quality
ITE QD140 40 AMP 120 240 VOLT REPLACES SQD QO140 BREAKER
ITE QD140 40 AMP 120 240 VOLT REPLACES SQD QO140 BREAKER
$2.70
quality
1 NEW SIEMENS BL B240 CIRCUIT BREAKER 40A 40 AMP 2P 2 POLE 240V 240 VOLT
1 NEW SIEMENS BL B240 CIRCUIT BREAKER 40A 40 AMP 2P 2 POLE 240V 240 VOLT
$15.00
quality
Cutler Hammer QBHW 3 pole 40 amp 120 240v QBHW3040H Circuit Breaker
Cutler Hammer QBHW 3 pole 40 amp 120 240v QBHW3040H Circuit Breaker
$30.00
quality
Westinghouse EHD3040L 40 Amp Industrial Circuit Breaker
Westinghouse EHD3040L 40 Amp Industrial Circuit Breaker
$119.99
quality
FUJI ELECTRIC BU ESB 40 AMP 3 POLE
FUJI ELECTRIC BU ESB 40 AMP 3 POLE
$20.00
quality
WESTINGHOUSE HQNB HQNB3040 3 POLE 40 AMP CIRCUIT BREAKER
WESTINGHOUSE HQNB HQNB3040 3 POLE 40 AMP CIRCUIT BREAKER
$30.00
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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