Eaton / Westinghouse FB3090PF Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
FB3090PF
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
FB3090PF
Quantity
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Eaton / Westinghouse FB3090PF - 90A 3 Pole Molded Case Circuit Breaker
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Description
Manufactured under the classic Westinghouse brand, this 90A F-frame molded case circuit breaker delivers reliable power distribution. It features proven thermal-magnetic trip technology and AB De-Ion arc extinction. The bolt-on design mounts into vintage CDP and Pow-R-Line panelboards. It serves as an exact-fit solution for older infrastructure. Rated for 18kAIC at 240VAC, the unit includes line-side pressure fingers. Upgrading to the newer FDB3090 requires an adapter plate.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | FB3090PF |
| Series | FB |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Panelboards (CDP, Pow-R-Line) |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included, Line Side Panel Connectors |
| Standards | UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, 40C Ambient Calibration, AB De-Ion Arc Extinction |
Product FAQs
5 answersCan the Eaton FB3090PF replace an older Westinghouse or Cutler-Hammer FB3090PF?
Yes. Eaton acquired the Westinghouse distribution equipment division and integrated it with Cutler-Hammer. The Eaton FB3090PF is the direct replacement for legacy Westinghouse and Cutler-Hammer breakers with the same catalog number, maintaining the exact same F-Frame dimensions and UL listings.
What type of panelboards accept the FB3090PF circuit breaker?
The FB3090PF is a bolt-on molded case circuit breaker specifically designed to mount in Eaton, Cutler-Hammer, and legacy Westinghouse CDP and Pow-R-Line series panelboards.
How does the thermal-magnetic trip unit in the FB3090PF operate?
The FB3090PF features a fixed thermal and fixed magnetic trip unit providing LI (Long-Time and Instantaneous) functions. The thermal element provides long-time protection against gradual overloads, while the magnetic element provides instantaneous tripping to protect the circuit against severe short circuits.
How is the FB3090PF secured to the panelboard bus?
As a bolt-on circuit breaker, the FB3090PF connects directly to the panelboard busbars using threaded fasteners. This provides a highly secure, vibration-resistant mechanical and electrical connection suitable for heavy commercial and industrial applications.
What are the primary safety considerations when installing this bolt-on MCCB?
Installation must be performed by a qualified electrician with the panelboard fully de-energized. Because it is a bolt-on F-Frame breaker, the bus connections must be securely torqued to the manufacturer specifications to prevent high-resistance joints, overheating, and potential arc flash hazards.
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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.