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Eaton / Cutler-Hammer FDB2100L Molded Case Circuit Breaker

  • 100A
  • 2 Pole
  • Unit Mount
Eaton / Cutler-Hammer FDB2100L
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU FDB2100L
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  • 100A
  • 2 Pole
  • Unit Mount

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Eaton / Cutler-Hammer FDB2100L - 100A 2 Pole Molded Case Circuit Breaker

Eaton / Cutler-Hammer FDB2100L - 100A 2 Pole Molded Case Circuit Breaker

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$491.40 In Stock

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Description

Built for standalone configurations, the Eaton FDB2100L is a 2-pole, 100A unit-mount circuit breaker. It provides essential power distribution and protection for commercial and industrial facilities. Unlike standard panel-mount versions, this Series C F-Frame breaker includes both line and load lugs, allowing for flexible installation in control panels and custom enclosures. Delivering 14 kAIC at 480VAC, it features fixed thermal-magnetic (LI) trip functions and is reverse feed capable.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number FDB2100L
Series FDB
Amperage 100A
Poles 2
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 1
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
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
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

Product FAQs

9 answers
What does the "L" in the FDB2100L catalog number indicate?

The "L" signifies that the breaker includes factory-installed line and load lugs. The standard FDB2100 base model may ship without terminals.

Can the FDB2100L replace legacy Westinghouse FDB breakers?

Yes. Eaton acquired the Westinghouse distribution equipment line, and the Series C F-Frame FDB2100L serves as a direct replacement for older Westinghouse models with matching specifications.

Is the FDB2100L suitable for reverse feed applications?

Yes, this thermal magnetic molded case circuit breaker is reverse feed capable, allowing power to be supplied to either the line or load terminals.

What wire sizes and materials are accepted by the included lugs?

The factory-installed lugs accept 14 AWG through 1/0 AWG copper (Cu) or aluminum (Al) conductors.

Can this breaker be used in direct current (DC) circuits?

Yes, the thermal magnetic trip unit is rated for up to 250VDC applications, providing a 10kAIC interrupting rating for DC systems.

What type of trip unit is installed in the FDB2100L?

It features a fixed thermal and fixed magnetic (LI) trip unit. The trip mechanism is non-interchangeable and provides both long-time and instantaneous fault protection.

What enclosures are compatible with this F-Frame breaker?

It is designed for installation in Eaton Series C panelboards, switchboards, and motor control centers that accept unit-mount, feed-thru breakers.

Does this breaker require a separate rating plug?

No. The FDB2100L uses a fixed thermal magnetic trip unit, which does not require or accept interchangeable rating plugs.

Is the FDB2100L rated for HVAC equipment?

Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.

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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.