Serving as a core component in commercial power distribution, this 110A molded case breaker delivers proven long-time and instantaneous trip functions. The unit installs into standard Eaton Series C panelboards and switchboards requiring F-Frame dimensions. With a robust 65kAIC interrupting capacity at 480VAC, it handles demanding fault conditions effectively. Facilities looking to modernize their infrastructure can substitute this unit with the newer Power Defense PDG23M0110TFFJ model.
HACR Rated, High Interrupting Capacity, Reverse Feed
Product FAQs
7 answers
What panelboards are compatible with the HFD3110 circuit breaker?
This F-Frame breaker installs into Eaton and Cutler-Hammer Series C panelboards, switchboards, and motor control centers. It is commonly used in Pow-R-Line 3a (PRL3a) distribution panels.
How does the HFD3110 differ from the FD3110 and FDC3110?
The difference is the maximum interrupting capacity (AIC) at 480VAC. The standard FD3110 is rated for 35kA, the HFD3110 is rated for 65kA, and the FDC3110 provides a 100kA rating.
What is the modern Power Defense replacement for the HFD3110?
Facilities upgrading to the newer Eaton Power Defense platform can replace this unit with catalog number PDG23M0110TFFJ. Note that installing a Power Defense breaker into older Series C equipment requires updated mounting hardware.
Can the HFD3110 be reverse fed?
Yes. Standard thermal-magnetic Eaton Series C F-Frame circuit breakers are suitable for reverse feed applications.
Is this 110A Eaton breaker HACR rated?
Yes, all Eaton Series C F-Frame molded case circuit breakers carry an HACR rating, making them suitable for overcurrent protection in heating, air conditioning, and refrigeration equipment circuits.
Can this 3-pole breaker be used in a single-phase application?
Yes. When using this 3-pole breaker for a 2-pole or single-phase application, Eaton recommends wiring the load using the two outside poles.
What wire sizes do the factory lugs on the HFD3110 accept?
The included standard pressure terminals accept copper or aluminum (Cu/Al) conductors ranging from 4 AWG to 4/0 AWG.
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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