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Eaton / Cutler-Hammer FB3050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
FB3050
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FB3050
Quantity
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Eaton / Cutler-Hammer FB3050 - 50A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial distribution, the Eaton FB3050 provides 50A of thermal-magnetic protection. This three-pole MCCB operates on systems up to 600VAC, making it ideal for legacy infrastructure. As a bolt-on component, it installs into classic Westinghouse Pow-R-Line panelboards and motor control centers. For modern upgrades, it is replaced by the FDB3050. Rated at 14 kAIC at 480V, it features fixed long-time and instantaneous trip functions. It is HACR rated and supports reverse feed.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FB3050-R |
| Series | FB |
| Amperage | 50A |
| 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 / Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 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 Terminals |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
5 answersWhat panels and equipment are compatible with the FB3050 circuit breaker?
This F-frame breaker is designed for use in Westinghouse and Eaton Pow-R-Line panelboards, switchboards, and motor control centers.
Is the Eaton FB3050 the same as the Westinghouse FB3050?
Yes. Eaton acquired the Westinghouse distribution equipment business. The Cutler-Hammer and Eaton FB3050 are direct, interchangeable replacements for the original Westinghouse FB3050.
Can the FB3050 breaker be reverse fed?
No. Eaton FB-frame circuit breakers are marked with line and load designations and are not UL listed for reverse feed applications.
Is the FB3050 rated for DC applications?
Yes, this thermal magnetic breaker is rated for DC systems up to 250VDC with a 10kA interrupting capacity.
Does the FB3050 feature a push-to-trip mechanism for testing?
Yes, Eaton F-frame breakers include a push-to-trip button to mechanically trip the breaker, allowing you to periodically exercise and verify the operation of the tripping mechanism.
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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.