Part of the Series C F-Frame family, the Eaton FDB3150L delivers robust thermal-magnetic protection for commercial electrical systems. This 3-pole, 150A unit features fixed long-time and instantaneous (LI) trip functions to safeguard critical circuits. It installs into Eaton and legacy Westinghouse panelboards, switchboards, and motor control centers. Rated for 14 kAIC at 480VAC, this unit-mount MCCB accepts 4 AWG to 4/0 AWG wire and is being transitioned to the newer Power Defense series.
It is designed for use in Eaton Series C panelboards, legacy Westinghouse panelboards, motor control centers, and switchboards configured for F-frame unit mount breakers.
Can the FDB3150L be reverse fed?
Yes, standard Eaton F-frame thermal magnetic circuit breakers are suitable for reverse feed applications.
What does the L in the FDB3150L catalog number signify?
The L indicates that the breaker is supplied with standard factory installed line and load side lugs.
Do I need to order special lugs to terminate 4/0 AWG wire?
No, the standard line and load lugs included with the FDB3150L already accept copper or aluminum conductors ranging from 4 AWG up to 4/0 AWG.
Will this breaker replace an older Westinghouse FDB3150?
Yes. Eaton manufactures Series C breakers to the exact physical dimensions as legacy Westinghouse F-frame breakers. The FDB3150L directly replaces older Westinghouse FDB3150 models and includes line and load lugs.
Does this thermal magnetic breaker provide ground fault protection?
No, the FDB3150L features a standard thermal magnetic trip unit with fixed long time and instantaneous functions. It does not contain electronic trip units required for equipment or personnel ground fault protection.
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Customers rate this product 5.0 out of 5 based on 2 reviews.