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Eaton / Westinghouse EB3050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
EB3050
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
EB3050
Quantity
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Eaton / Westinghouse EB3050 - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Description
Engineered for commercial applications, the Eaton EB3050 delivers reliable thermal-magnetic protection. This 3-pole, 50A MCCB handles standard distribution needs. It installs into legacy Westinghouse and Eaton panelboards utilizing a secure bolt-on mount. Serving as the exact component now replaced by the EHD3050, it eliminates the need for retrofitting. Rated for 10 kAIC at 240VAC, it features fixed trip settings and AB De-Ion arc extinction. Load side lugs are included for quick wiring.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | EB3050-R |
| Series | EB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 5kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Panelboards, Eaton Panelboards |
| 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 Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards accept the EB3050 circuit breaker?
The EB3050 is a bolt-on E-Frame breaker designed for legacy Westinghouse and modern Eaton Cutler-Hammer panelboards. Verify your panelboard interior accepts E-Frame bolt-on breakers before installation, as they are not compatible with plug-on load centers.
What is the modern replacement for the obsolete Westinghouse EB3050?
Eaton replaced the legacy EB3050 with the EHD3050 F-Frame circuit breaker. While the EHD3050 provides equivalent electrical protection, installing it in vintage Westinghouse panelboards may require a retrofit kit. Sourcing an original EB3050 allows for a direct drop-in replacement without modifying the bus or panel deadfront.
What wire sizes are compatible with the EB3050 lugs?
The standard load side lugs accept 14 AWG through 1/0 AWG copper or aluminum conductors. Ensure proper torque specifications are followed during installation to maintain a secure connection and prevent terminal overheating.
Is the EB3050 suitable for direct current circuits?
Yes, in addition to its standard AC rating, the EB3050 is rated for 250VDC applications. It provides a 5kA interrupting capacity for DC systems, making it suitable for specific industrial control or battery applications.
What happens if the available fault current exceeds the rating of the EB3050?
The EB3050 is rated for a maximum of 10kA at 240VAC. If installed in a system with a higher available fault current, the breaker may fail to safely clear a short circuit, posing a severe fire and safety hazard. Always verify the system fault current before installation.
Are the trip settings on the EB3050 adjustable?
No, the EB3050 features a fixed thermal-magnetic trip unit. Both the long-time overload protection and the instantaneous short-circuit protection are factory-calibrated and cannot be adjusted in the field.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
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Rating
6 reviews
- THTerry H.Verified BuyerReviewingEaton / Westinghouse EB3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26no issues
As described, arrived quickly. As long as your homework is good the come through. They can also cross reference for you too.
- TMTROY M. C.Verified BuyerReviewingEaton / Westinghouse EB1020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/6/26westinghouse breaker for the very best
it work so good to turn on and off very satisfaction great for OCP. would buy again 10/10
- JSJames S.Verified BuyerReviewingEaton / Westinghouse EB3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25breaker
Ship time was fair; breaker fits & functions.
- JAJerry A.ReviewingEaton / Westinghouse EB1020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/1/20GE Braker
Re-certified breaker was the exact match for the old one. Thank you for the quick turnaround.
jerry-
- RBRobert B.ReviewingEaton / Westinghouse EB3040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/25/19The right one
Fit like a glove, works great