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.
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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Customers rate this product 5.0 out of 5 based on 2 reviews.