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Eaton / Cutler-Hammer EHD3040L Molded Case Circuit Breaker
- 40A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
EHD3040L
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
EHD3040L
Quantity
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Eaton / Cutler-Hammer EHD3040L - 40A 3 Pole Molded Case Circuit Breaker
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Description
Designed for standalone configurations, this 40A unit-mount breaker includes both line and load lugs for flexible cable-in/cable-out installations. It provides reliable thermal-magnetic protection with a 14kAIC rating at 480VAC for industrial motor control centers and switchgear. While this specific F-Frame model is transitioning to the newer Power Defense series (PDG23F0040TFFJ), it remains fully supported for existing infrastructure.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EHD3040L |
| Series | EHD |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| 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 |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the L suffix in the EHD3040L catalog number indicate?
The L indicates that the breaker is supplied with both line and load side lug terminals installed from the factory.
Can the EHD3040L be reverse fed?
Yes, Eaton Series C F-Frame circuit breakers are suitable for reverse feed applications.
Is the EHD3040L suitable for heating and cooling equipment?
Yes, all Eaton F-Frame circuit breakers are HACR rated for use with heating, air conditioning, and refrigeration equipment.
Can this 40-amp breaker be used for high-intensity discharge lighting?
Yes, Eaton EHD circuit breakers rated between 10 and 50 amps are suitable for HID lighting applications.
Will the EHD3040L replace older Westinghouse EHD breakers?
Yes, Eaton acquired the Westinghouse distribution equipment line. This breaker is a direct replacement for legacy Westinghouse and Cutler-Hammer EHD3040L models.
Does this breaker provide ground fault or arc fault protection?
No, the EHD3040L features a standard thermal-magnetic trip unit for overload and short-circuit protection. It does not provide GFCI or AFCI protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
Total 5 star reviews: 13 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
13 reviews
- BCBradley C.Verified BuyerReviewingEaton / Cutler-Hammer EHD3015 - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/27/26Order ease
Quick checkout , good price on reconditioned and very timely delivery.
- RYRichard Y.Verified BuyerReviewingEaton / Cutler-Hammer EHD3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/15/26Breaker replacement
Quick and responsive delivery
- JMJames M.Verified BuyerReviewingEaton / Cutler-Hammer EHD3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/22/26perfect condition
Part arrived on time and works perfectly.
- JAJoseph A.Verified BuyerReviewingEaton / Cutler-Hammer EHD3090 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/17/26On time and exactly what I needed
Breaker came as expected and quick. Super happy
- SMSteve M.Verified BuyerReviewingEaton / Cutler-Hammer EHD3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/10/25Why go anywhere else
I needed a very specific solution to an overcurrent protection requirement and the sales rep got me exactly what I needed at a great price.