Eaton / Cutler-Hammer HFD1040L Molded Case Circuit Breaker
- 40A
- 1 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer HFD1040L - 40A 1 Pole Molded Case Circuit Breaker
New
Quantity
Description
Operating as a standalone protection device, the Eaton HFD1040L is a 40A, single-pole unit mount molded case circuit breaker. Unlike bolt-on models, it features factory-installed line and load lugs for flexible integration into control panels and custom enclosures. This Series C F-Frame breaker provides a high interrupting capacity of 65kAIC at 277VAC. It utilizes fixed thermal-magnetic trip technology (LI) and serves as a reliable predecessor to the PDG21M0040TFFJ successor.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFD1040L |
| Series | HFD |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 277VAC, 10kA @ 125VDC, 35kA @ 347VAC |
| Frame Type | F |
|---|---|
| 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, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | ABS, CE, CSA, HACR, HID, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, High Interrupting Capacity, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersDoes the HFD1040L come with terminal lugs installed?
Yes, the L suffix in the catalog number indicates that both line and load lugs are included from the factory. These terminals accept 14 to 1/0 AWG copper or aluminum wire.
How is this F-Frame breaker mounted in an enclosure?
This is a unit mount, feed-thru circuit breaker. It is designed to be bolted directly to a mounting pan or chassis in Series C panelboards, switchboards, or motor control centers, rather than plugging directly into a busbar.
Is there a difference between the Cutler-Hammer and Eaton versions of this breaker?
No. Eaton acquired Cutler-Hammer and continues to manufacture the Series C F-Frame breakers under the Eaton name. An Eaton HFD1040L is an exact drop-in replacement for an older Cutler-Hammer branded unit.
What is the difference between an FD1040L and an HFD1040L?
The H prefix indicates a high interrupting rating. While a standard FD breaker has a lower short circuit capacity, the HFD provides up to 100kAIC at 240VAC, making it suitable for commercial and industrial systems with higher available fault currents.
Can this 1-pole breaker be used in direct current circuits?
Yes, this thermal magnetic breaker is rated for use in DC applications up to 125VDC, providing a 10kA interrupting capacity for those specific installations.
Can the trip settings on this breaker be adjusted in the field?
No, it features a fixed thermal magnetic trip unit. Both the long time overload and instantaneous short circuit trip functions are factory set and cannot be modified.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 21 reviews.
- CHcarl h.Verified BuyerReviewingEaton / Cutler-Hammer HFD3200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/20/26Breaker
Breaker shipped out and we received it super quick.
- DLDeanna L.Verified BuyerReviewingEaton / Cutler-Hammer HFD3150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/26Eaton / Cutler-Hammer HFD3150 - 150A 3 Pole Molded Case Circuit Breaker
We needed more breakers ASAP and once again, Michael David came thru like he always does. We are a 24/7/ emergency electrical restoration companyso most of our orders are always needed in a rush and SuperBreakers is always my go to!.
- RFRon F.Verified BuyerReviewingEaton / Cutler-Hammer HFD3045 - 45A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/9/26HFD3045
Perfect breaker & great price/delivery. It's very easy to schedule around SB as their projected delivery times are accurate.
- CPChristopher P.Verified BuyerReviewingEaton / Cutler-Hammer HFD3020L - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/13/26Fast and Cost effective
Superbreakers Is always my first palce to look for harder to source breakers for a good price, and fast turnaround.
- DSDavid S. B. D.Verified BuyerReviewingEaton / Cutler-Hammer HFD3060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/6/26Breaker
Great response time and product