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Eaton / Westinghouse FB2020S Molded Case Circuit Breaker

  • 20A
  • 2 Pole
  • Bolt-On
Eaton / Westinghouse FB2020S
Molded Case Circuit Breaker
Brand Eaton / Westinghouse
SKU FB2020S
Select Item Condition
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  • 20A
  • 2 Pole
  • Bolt-On

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Westinghouse FB2020S 2 Pole Circuit Breaker

Eaton / Westinghouse FB2020S - 20A 2 Pole Molded Case Circuit Breaker

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$187.82 In Stock

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Description

Engineered to support legacy electrical systems, the Eaton FB2020S is a 2-pole, 20A molded case circuit breaker. It operates across 600VAC and 250VDC networks, offering robust overcurrent defense for industrial facilities. This bolt-on unit serves as an exact substitute for the FDB2020, fitting seamlessly into existing Westinghouse switchboards. Facility managers can rely on its dimensions to maintain older enclosures. It delivers a 14 kAIC interrupting capacity at 480VAC with fixed LI trips.

Specifications

Key specifications
Brand Eaton / Westinghouse
Part Number FB2020S-R
Series FB
Amperage 20A
Poles 2
Mounting Style Bolt-On
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 1
AIC Rating 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC
Fit and installation
Terminal Type Lugs
For Use With Westinghouse Panelboards, Motor Control Centers, Switchboards
Wire Gauge 14 AWG - 1/0 AWG (Al/Cu)
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
Accessories Saf-T-Vue (Transparent Contact Cover)
Standards NEMA AB-1, UL 489, W-C-375b
Approval CSA, UL
Temp Rating 40C
Construction Features Visual Trip Indicator, AB De-Ion Technology

Product FAQs

5 answers
What enclosures are compatible with the FB2020S circuit breaker?

This F-frame breaker is designed to bolt directly into legacy Westinghouse panelboards, motor control centers, and switchboards.

What does the S suffix in the FB2020S catalog number indicate?

The S indicates that the breaker is equipped with stainless steel terminals, offering enhanced corrosion resistance compared to standard lugs.

Does the FB2020S come with lugs installed?

Yes, this breaker includes factory-installed lugs that accept 14 AWG to 1/0 AWG aluminum or copper wiring.

Is this breaker rated for use in DC electrical systems?

Yes, the thermal-magnetic trip unit is rated for direct current applications up to 250VDC, providing a 10kA interrupting capacity for DC loads.

Can the FB2020S replace a standard FB2020 breaker?

Yes, it shares the exact same physical dimensions, F-frame footprint, and electrical ratings as the standard FB2020, but includes upgraded stainless steel terminals.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
2 reviews
  • SD
    Sal D.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer FB3125 - 125A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/16/26
    Breakers

    Really happy with the breakers and with the quickness they were delivered

  • CB
    Christopher B.
    Flag of United States
    Reviewing
    Eaton / Cutler-Hammer FB3015L - 15A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    11/8/20
    AWESOME JOB

    Quick response and delivery. Exactly what I wanted.