Built to withstand demanding environmental conditions, the Eaton HFD3040J01 is a 3-pole, 40A molded case circuit breaker. The J01 catalog suffix designates a factory-applied moisture and fungus treatment, making it ideal for high-humidity or tropical industrial applications. This panel mount breaker fits Eaton Series C panelboards, switchboards, and motor control centers. It utilizes the proven F-Frame footprint for straightforward integration. It delivers 65kAIC at 480V with LI protection.
HACR Rated, High Interrupting Capacity, Reverse Feed, HID Rated
Product FAQs
8 answers
What does the J01 suffix indicate on the HFD3040J01?
The J01 catalog suffix designates a factory-applied moisture and fungus treatment, making the breaker suitable for high-humidity or tropical industrial environments.
What panelboards are compatible with the HFD3040J01 circuit breaker?
This F-Frame breaker is designed for use in Eaton Series C panelboards, switchboards, and motor control centers.
What is the difference between a standard FD3040 and the HFD3040J01?
The HFD3040J01 features a higher interrupting capacity of 65kAIC at 480VAC compared to the standard FD frame rating of 35kAIC. It also includes the J01 moisture and fungus treatment.
Are the trip settings adjustable on the HFD3040J01?
No, this breaker features a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings for long-time and instantaneous (LI) protection.
Can the HFD3040J01 be used in DC applications?
Yes, this breaker is rated for up to 250VDC with an interrupting capacity of 22kAIC, making it suitable for specific direct current systems.
What wire sizes are accepted by the standard lugs on the HFD3040J01?
The included lugs accept wire gauges ranging from 14 AWG up to 1/0 AWG.
Does the HFD3040J01 provide ground fault protection?
No, this breaker is equipped with a standard thermal-magnetic trip unit for overload and short-circuit protection. It does not include integral ground fault or equipment protection features.
How does the HFD3040J01 mount into an enclosure?
It utilizes a bolt-on connection for secure panel mounting within compatible Eaton Series C enclosures.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 21 reviews.
Eaton / Cutler-Hammer HFD3200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/20/26
Breaker
Breaker shipped out and we received it super quick.
DL
Deanna L.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HFD3150 - 150A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/19/26
Eaton / 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!.
RF
Ron F.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HFD3045 - 45A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/9/26
HFD3045
Perfect breaker & great price/delivery. It's very easy to schedule around SB as their projected delivery times are accurate.
CP
Christopher P.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HFD3020L - 20A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
2/13/26
Fast and Cost effective
Superbreakers Is always my first palce to look for harder to source breakers for a good price, and fast turnaround.
DS
David S. B. D.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HFD3060 - 60A 3 Pole Molded Case Circuit Breaker