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Eaton / Cutler-Hammer FDB3110 Molded Case Circuit Breaker

  • 110A
  • 3 Pole
  • Bolt-On
Eaton / Cutler-Hammer FDB3110
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU FDB3110
Select Item Condition
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  • 110A
  • 3 Pole
  • Bolt-On

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Eaton / Cutler-Hammer FDB3110 - 110A 3 Pole Molded Case Circuit Breaker

Eaton / Cutler-Hammer FDB3110 - 110A 3 Pole Molded Case Circuit Breaker

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$1,387.40 In Stock

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Description

Engineered for commercial power distribution, the Eaton FDB3110 is a 3-pole, 110A molded case circuit breaker from the Series C family. It utilizes a proven F-frame design with fixed thermal-magnetic trip units. This bolt-on breaker installs into Eaton Series C panelboards, switchboards, and motor control centers. It is fully compatible as a replacement for legacy Cutler-Hammer FDB models. Featuring a 14 kAIC rating at 480VAC, the breaker is HACR rated and reverse feed capable.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number FDB3110
Series FDB
Amperage 110A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC
Fit and installation
Frame Type F
Terminal Type Lugs
For Use With Eaton Series C Panelboards, Switchboards, Motor Control Centers, F-Frame Enclosures
Wire Gauge 4-4/0 AWG (Cu/Al)
Max Wire 4/0 AWG
Min Wire 4 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
Accessories Load Side Lugs
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Quick-Make/Quick-Break, Trip-Free Mechanism, Non-Interchangeable Trip

Product FAQs

5 answers
Can the Eaton FDB3110 replace an older Westinghouse FDB3110 circuit breaker?

Yes. Eaton acquired the Westinghouse electrical distribution business and continues to manufacture the Series C F-frame breakers. The Eaton FDB3110 is a direct replacement for the legacy Westinghouse FDB3110, sharing the same physical dimensions and mounting footprint.

What is the difference between the FDB3110, FD3110, and HFD3110?

While all three are 110A, 3-pole Series C F-frame breakers with identical physical dimensions, they differ in their short-circuit interrupting ratings. The FDB3110 is rated for 14kAIC at 480V, the FD3110 is rated for 35kAIC at 480V, and the HFD3110 is rated for 65kAIC at 480V.

Is the FDB3110 suitable for reverse feed applications?

Yes. Eaton Series C F-frame thermal-magnetic circuit breakers, including the FDB3110, do not have line and load restrictions and are suitable for reverse feed installations.

Which panelboards are compatible with the FDB3110 breaker?

The FDB3110 is designed for use in Eaton Series C panelboards, switchboards, and motor control centers. It can also be installed in legacy Westinghouse CDP and FDP panelboards, though specific mounting hardware or retrofit kits may be required to adapt the modern breaker to older enclosures.

Does the FDB3110 include ground fault protection?

No. The FDB3110 features a standard thermal-magnetic trip unit with Long-Time and Instantaneous (LI) trip functions only. It does not provide equipment ground fault protection.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 2 reviews
Rating
Ratings
2 reviews
  • B
    Brent
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer FDB3060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/18/26
    Breaker was as expected.

    Breaker was clean, you could not tell it was used.

  • RF
    Russell F.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer FDB3025 - 25A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    2/24/26
    Right product, right time

    This is what I needed, and I got it in time.