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Eaton / Cutler-Hammer FD1040 Molded Case Circuit Breaker
- 40A
- 1 Pole
- Bolt-On
Eaton / Cutler-Hammer
FD1040
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FD1040
Quantity
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Eaton / Cutler-Hammer FD1040 - 40A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Sold out
Quantity
Eaton / Cutler-Hammer FD1040 - 40A 1 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FD1040 |
| Series | FD |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 35kA @ 277VAC, 10kA @ 125VDC, 18kA @ 347VAC |
| Frame Type | FD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, HID Rated |
Sold out
Quantity
Eaton / Cutler-Hammer FD1040 - 40A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FD1040-R |
| Series | FD |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 35kA @ 277VAC, 10kA @ 125VDC, 18kA @ 347VAC |
| Frame Type | FD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, HID Rated |
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Description
Built to handle demanding electrical loads, this 40-amp single-pole breaker provides essential thermal-magnetic protection for commercial facilities. The bolt-on module integrates smoothly into Eaton Series C panelboards, switchboards, and motor control centers. For modernization projects, this specific model is succeeded by the Power Defense PDG21G0040TFFL series. With a 35kAIC capacity at 277VAC, it is fully HACR and HID rated for specialized lighting and HVAC loads.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FD1040-R |
| Series | FD |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 35kA @ 277VAC, 10kA @ 125VDC, 18kA @ 347VAC |
| Frame Type | FD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, HID Rated |
Product FAQs
6 answersWhat type of enclosures and panels accept the FD1040 breaker?
This F-frame breaker is designed to mount in Eaton Series C panelboards, switchboards, and motor control centers. It requires a bolt-on connection and is not compatible with standard residential plug-on load centers.
Can the FD1040 be used in DC voltage applications?
Yes, this thermal-magnetic breaker is rated for up to 125VDC with an interrupting capacity of 10kAIC, making it suitable for direct current circuits within those limits.
Does the Eaton FD1040 replace older Westinghouse FD1040 breakers?
Yes. Eaton acquired the Westinghouse distribution equipment division, so the Cutler-Hammer or Eaton FD1040 is a direct, drop-in replacement for the legacy Westinghouse FD1040.
Is the FD1040 suitable for reverse feed applications?
Yes, standard thermal-magnetic Series C F-frame breakers like the FD1040 are suitable for reverse feed applications because they do not have line and load specific internal components.
What wire sizes are accepted by the standard lugs on the FD1040?
The standard factory-installed line and load lugs accept 14 AWG to 1/0 AWG copper or aluminum wire. Ensure you use a suitable joint compound when terminating aluminum conductors to prevent overheating.
What is the difference between the FD1040 and the EHD1040?
Both are 40-amp, 1-pole F-frame breakers, but the FD series has a higher interrupting rating. The FD1040 provides 35kAIC at 277VAC, whereas the EHD series is typically rated for 14kAIC at 277VAC.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 14 reviews.
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Rating
14 reviews
- SGStephen G.Verified BuyerReviewingEaton / Cutler-Hammer FD3175 - 175A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars7/13/26175amp molded case circuit breaker
The breaker we purchased was as advertised. The breaker fit perfectly. We purchased reconditioned breaker and it seems to be working properly, accordingly to the golf course maintenance team that supervises the irrigation system.
Next day shipping came quickly even though the 4th of July was coming.
I wish it came with new installations hardware but that isn’t a deal breaker.
- MBMichael B.Verified BuyerReviewingEaton / Cutler-Hammer FD3040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/7/26Worked perfectly
This circuit breaker installed as expected and performed flawlessly.
- DQDavid Q.ReviewingEaton / Cutler-Hammer FD2080 - 80A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/17/23A+ Seller
Breaker came as described and was shipped out fast!
- OCOscar C.ReviewingEaton / Cutler-Hammer FD3175 - 175A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/20/23Great Service
Totally recommended
- MLMichael L.ReviewingEaton / Cutler-Hammer FD2050 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/2/22Quick and Easy
They had what we needed and were able to ship it quickly.