Designed for heavy-duty industrial use, the Eaton HFD3040BP10 is a 3-pole, 40A molded case circuit breaker. The BP10 catalog suffix indicates this unit originates from a convenient 10-piece bulk pack, offering the exact same performance as the standard HFD3040. This panel mount MCCB integrates seamlessly into Series C panelboards, switchboards, and motor control centers. For modern upgrades, it crosses to the Power Defense PDG23M0040TFFJ. It provides fixed thermal-magnetic LI protection.
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
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed Thermal, Fixed Magnetic
Standards and features
Available Options
Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Terminal Shields, Handle Tie
Accessories
Load Side Lugs (Included)
Standards
CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB-1, UL 489
Approval
CSA, UL
Temp Rating
40C
Construction Features
HACR Rated, High Interrupting Capacity, Reverse Feed, HID Rated
Product FAQs
8 answers
Can I use the HFD3040BP10 in a standard Eaton Series C panelboard?
Yes, this F-Frame breaker is designed for use in Eaton Series C panelboards, switchboards, and motor control centers. It mounts directly to the chassis using standard bolt-on hardware.
What does the BP10 suffix mean on the HFD3040BP10 catalog number?
The BP10 suffix indicates bulk packaging of 10 units from the manufacturer. The breaker itself is identical in form, fit, and function to a standard HFD3040.
Can this HFD breaker replace an older Westinghouse HFD3040?
Yes. Eaton acquired the Cutler-Hammer and Westinghouse molded case circuit breaker lines. A modern Eaton HFD3040BP10 is a direct drop-in replacement for legacy Westinghouse HFD 40A 3-pole breakers.
How does the HFD series differ from standard FD or FDC breakers?
The HFD series offers a high interrupting rating (65kAIC at 480VAC), which sits between the standard FD series (35kAIC at 480VAC) and the extra-high FDC series (100kAIC at 480VAC). They share the same physical F-Frame dimensions.
What type of wire can I terminate on the HFD3040BP10 lugs?
The factory-installed lugs accept 14 AWG through 1/0 AWG wire. They are dual-rated for both copper (Cu) and aluminum (Al) conductors.
Is the HFD3040BP10 rated for direct current (DC) systems?
Yes, this thermal-magnetic breaker is rated for up to 250VDC with a maximum interrupting capacity of 22kAIC, making it suitable for specific DC control or distribution circuits.
Can the trip settings on this 40A breaker be adjusted in the field?
No. This breaker features a fixed thermal and fixed magnetic trip unit. Neither the long-time (overload) nor the instantaneous (short-circuit) trip functions can be adjusted.
What safety precautions are required when installing this F-Frame breaker?
Installation must be performed by a qualified electrician. Ensure all power sources to the panelboard or switchboard are completely de-energized and locked out before mounting the breaker or terminating conductors.
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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