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Eaton / Cutler-Hammer FDB3150L Molded Case Circuit Breaker

  • 150A
  • 3 Pole
  • Unit Mount
Eaton / Cutler-Hammer FDB3150L
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU FDB3150L
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  • 150A
  • 3 Pole
  • Unit Mount

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Eaton / Cutler-Hammer FDB3150L - 150A 3 Pole Molded Case Circuit Breaker

Eaton / Cutler-Hammer FDB3150L - 150A 3 Pole Molded Case Circuit Breaker

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$1,650.00 In Stock

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Description

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.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number FDB3150L
Series FDB
Amperage 150A
Poles 3
Mounting Style Unit Mount
Voltage 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, Westinghouse Panelboards, Motor Control Centers, Switchboards
Wire Gauge 4 AWG - 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 Line and Load Lugs
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489
Approval CE, CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism

Product FAQs

6 answers
What equipment accepts the FDB3150L breaker?

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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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.