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Eaton / Cutler-Hammer EHD2045L Molded Case Circuit Breaker
- 45A
- 2 Pole
- Unit Mount
Eaton / Cutler-Hammer
EHD2045L
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
EHD2045L
Quantity
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Eaton / Cutler-Hammer EHD2045L - 45A 2 Pole Molded Case Circuit Breaker
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Description
Built for standalone applications, the Eaton EHD2045L is a 2-pole, 45A unit mount circuit breaker featuring factory-installed line and load lugs. It installs into Series C enclosures and switchboards, providing dependable thermal-magnetic protection for industrial systems. The F-Frame breaker delivers an 18 kAIC rating at 240VAC and 14 kAIC at 480VAC. Serving as a substitute for FDB2045L and FD2045L, it ensures versatile performance across demanding environments.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EHD2045L |
| Series | EHD |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Enclosures, Switchboards |
| 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, HID Rated, Reverse Feed |
Product FAQs
10 answersWhat enclosures and panelboards are compatible with the EHD2045L?
The EHD2045L is designed for use in Eaton Series C enclosures, panelboards, switchboards, and motor control centers that accept F-Frame circuit breakers.
Can I use the EHD2045L to protect a DC load?
Yes, this breaker is rated for DC applications up to 250VDC, providing an interrupting capacity of 10kAIC for direct current systems.
What does the LI trip function code indicate on the EHD2045L?
The LI designation means the thermal-magnetic trip unit includes both Long-Time (thermal) and Instantaneous (magnetic) protection functions. Both the thermal and magnetic trip elements are fixed on this specific model.
Is the EHD2045L suitable for reverse feed applications?
Yes, standard Eaton Series C F-Frame breakers like the EHD2045L are reverse feed capable, allowing line power to be connected to either the top or bottom terminals.
Is the EHD2045L HACR rated?
Yes, this breaker carries an HACR rating, making it suitable for providing overcurrent protection for heating, air conditioning, and refrigeration equipment.
What is the standard lug kit part number for the EHD2045L?
The standard line and load lug kit for 14-1/0 AWG wire on Eaton 100A-max F-Frame breakers is part number 3T100FB.
Can internal accessories be added to the EHD2045L?
Yes, Eaton Series C F-Frame breakers support field-installable internal accessories. You can install auxiliary switches, alarm switches, undervoltage releases, and shunt trips under the front cover.
What is the difference between the EHD2045L and the FDB2045 or FD2045?
The EHD, FDB, and FD series are all Eaton Series C F-Frame breakers with identical physical dimensions. The primary differences are their maximum voltage and interrupting capacities. The EHD is rated up to 480VAC, while the FDB and FD models are rated up to 600VAC. Additionally, the FD model offers a higher interrupting rating of 35kAIC at 480VAC.
Can the EHD2045L replace older Westinghouse or Cutler-Hammer EHD2045 breakers?
Yes. Eaton acquired the Cutler-Hammer and Westinghouse molded case circuit breaker lines. The EHD2045L is the direct, functional replacement for legacy Cutler-Hammer and Westinghouse EHD2045 breakers.
Why is it critical to verify the available fault current before installing the EHD2045L?
Installing a breaker with an interrupting rating lower than the available fault current can result in catastrophic failure and arc flash hazards during a short circuit. Always ensure the system fault current does not exceed 14kAIC at 480VAC or 18kAIC at 240VAC.
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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.