Eaton / Westinghouse FB2020 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Eaton / Westinghouse
FB2020
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
FB2020
Quantity
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Eaton / Westinghouse FB2020 - 20A 2 Pole Molded Case Circuit Breaker
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Description
Built to handle demanding industrial loads, the 20-amp Eaton FB2020 features fixed thermal and magnetic trip functions. The breaker is uniquely configured as a two-pole device housed within a standard three-pole frame, leaving the center pole empty. Designed to integrate into vintage Westinghouse panelboards and motor control centers, it provides a seamless fit. Facility managers can use this unit to replace older FDB2020 and FD2020 breakers, maintaining system integrity and safety standards.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | FB2020-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 |
| Frame Type | FB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse Panelboards, Motor Control Centers |
| Wire Gauge | 14 AWG - 1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lug |
| Standards | NEMA AB-1, UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | AB De-Ion, Non-Interchangeable Trip |
Product FAQs
6 answersWhat types of enclosures and equipment are compatible with the FB2020 circuit breaker?
This legacy F-frame circuit breaker is designed for use in vintage Westinghouse panelboards and motor control centers. It is a bolt-on breaker that integrates directly into compatible legacy distribution systems.
Is the FB2020 suitable for direct current (DC) applications?
Yes, the thermal-magnetic trip unit allows this breaker to be used in DC circuits. It is rated for up to 250VDC with a 10kAIC interrupting capacity, making it suitable for specific industrial control applications.
Does the FB2020 include lugs on both the line and load sides?
No, this is a bolt-on circuit breaker. It features bolt-on connections on the line side for direct attachment to the panelboard bus, and standard lugs on the load side for wire termination.
What wire sizes are accepted by the load side lugs?
The standard load side lugs accept copper or aluminum (Cu/Al) conductors ranging from 14 AWG to 1/0 AWG. Always verify the specific torque requirements printed on the breaker faceplate during installation.
What is the modern Eaton replacement for the legacy Westinghouse FB2020?
The Eaton Series C FD2020 is the direct modern replacement for the legacy Westinghouse FB2020 circuit breaker. Both belong to the F-frame family and provide equivalent 20A overcurrent protection.
How does the thermal-magnetic trip unit in the FB2020 operate?
The breaker features fixed long-time and instantaneous (LI) trip functions. The thermal element provides delayed tripping for prolonged overloads, while the magnetic element trips instantly in the event of a short circuit.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 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
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Rating
2 reviews
- SDSal D.Verified BuyerReviewingEaton / Cutler-Hammer FB3125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/16/26Breakers
Really happy with the breakers and with the quickness they were delivered
- CBChristopher B.ReviewingEaton / Cutler-Hammer FB3015L - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/8/20AWESOME JOB
Quick response and delivery. Exactly what I wanted.