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Eaton / Cutler-Hammer FDB3020 Molded Case Circuit Breaker

  • 20A
  • 3 Pole
  • Bolt-On
Eaton / Cutler-Hammer FDB3020
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU FDB3020
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  • 20A
  • 3 Pole
  • Bolt-On

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Eaton / Cutler-Hammer FDB3020 - 20A 3 Pole Molded Case Circuit Breaker

Eaton / Cutler-Hammer FDB3020 - 20A 3 Pole Molded Case Circuit Breaker

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$670.60 In Stock

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Description

Serving as a reliable power distribution component, this 20A F-Frame breaker handles commercial and industrial loads up to 600VAC. The unit mounts into Eaton Series C and legacy Westinghouse panelboards, switchboards, and motor control centers. While Eaton has introduced the Power Defense PDG23F0020TFFJ as a modern substitute, this original FDB model maintains native compatibility without requiring specialized retrofit kits for existing installations.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number FDB3020
Series FDB
Amperage 20A
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
Terminal Type Lugs
For Use With Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards
Wire Gauge 14 AWG - 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 Load Side Lugs
Standards CSA C22.2 No. 5, NEMA AB-1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism, HID Rated

Product FAQs

9 answers
What equipment is compatible with the FDB3020 circuit breaker?

This F-Frame breaker is designed for use in Eaton Series C panelboards, legacy Westinghouse panelboards, switchboards, and motor control centers.

Can the Eaton FDB3020 replace an older Westinghouse FDB3020?

Yes. Eaton acquired the distribution equipment division of Westinghouse, so the Eaton FDB3020 is a direct, native replacement for the original Westinghouse FDB3020 without requiring specialized retrofit kits.

Does the FDB3020 come with both line and load lugs?

No. The standard FDB3020 catalog number includes load-side lugs only. If you need both line and load lugs, you will need the FDB3020L variant or must purchase line lugs separately.

What wire size and material does the FDB3020 accept?

The standard load lugs accept 14 AWG to 1/0 AWG copper or aluminum wire.

Is the FDB3020 suitable for reverse feed applications?

Yes. Like most Eaton Series C F-Frame breakers, the FDB3020 is reverse feed capable, making it versatile for various power distribution setups.

Is this breaker HACR rated?

Yes, the FDB3020 is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.

What is the difference between the FDB3020 and the FD3020?

Both are 20A, 3-pole F-Frame breakers, but they have different interrupting capacities. The FDB3020 is the standard-tier breaker rated at 14 kAIC at 480VAC, while the FD3020 is a higher-tier breaker rated at 35 kAIC at 480VAC.

Are the trip settings adjustable on the FDB3020?

No. This breaker features a fixed thermal and fixed magnetic trip unit, meaning the overload and short-circuit trip thresholds cannot be adjusted in the field.

What is the difference between the FDB3020 and the EHD3020?

While both are 20A, 3-pole F-Frame breakers with a 14 kAIC rating at 480VAC, the EHD3020 is rated for a maximum of 480VAC. The FDB3020 is rated for up to 600VAC.

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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.