Eaton / Westinghouse FB2150 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Bolt-On
Eaton / Westinghouse
FB2150
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
FB2150
Quantity
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Eaton / Westinghouse FB2150 - 150A 2 Pole Molded Case Circuit Breaker
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Description
Part of Eaton's legacy F-Frame lineup, the FB2150 is a 150A, two-pole molded case circuit breaker supplied in a three-pole housing. It utilizes AB De-Ion technology to rapidly extinguish arcs, ensuring reliable thermal-magnetic protection. This bolt-on breaker mounts into vintage Westinghouse CDP and FDP panelboards. It provides a seamless replacement solution for discontinued FDB2150 and FD2150 models, requiring no modifications. Rated to handle 18kAIC at 240VAC, it accepts 4 to 4/0 AWG wire.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | FB2150-R |
| Series | FB |
| Amperage | 150A |
| 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 CDP Panelboards, FDP Panelboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 4/0 AWG (Cu/Al) |
| Max Wire | 4/0 AWG |
| Min Wire | 4 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 Technology, 2-Pole in 3-Pole Housing |
Product FAQs
5 answersWhat panelboards are compatible with the FB2150 circuit breaker?
The FB2150 is designed for use in legacy Westinghouse CDP and FDP power distribution panelboards, as well as compatible motor control centers. It is a bolt-on breaker and will not fit in standard plug-on load centers.
Is the Westinghouse FB2150 circuit breaker still manufactured?
The original Westinghouse FB frame is obsolete and no longer in active production. It has been superseded by Eaton Series C F-frame breakers, such as the FDB or FD series, though exact fitment depends on the specific panelboard and mounting hardware.
Does the FB2150 require a specific mounting kit for panelboard installation?
Yes, installing this bolt-on breaker into a Westinghouse CDP or FDP panelboard requires the appropriate bus connector kit and mounting hardware, which are typically sold separately from the breaker itself.
What does the LI trip function indicate on the FB2150?
The LI designation means the thermal-magnetic trip unit provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection. Both the thermal and magnetic trip settings are fixed on this specific model.
What maintenance is recommended for the FB2150 terminals?
Eaton recommends periodically inspecting the terminations for evidence of overheating or looseness. If aluminum conductors are used, ensure a suitable joint compound is applied to reduce the possibility of terminal overheating and nuisance tripping.
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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.