Eaton / Westinghouse EHB1050 Molded Case Circuit Breaker
- 50A
- 1 Pole
- Bolt-On
Quantity
Eaton / Westinghouse EHB1050 - 50A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for commercial applications, the EHB1050 is a 50A, single-pole molded case circuit breaker featuring fixed thermal and magnetic trip elements. It provides essential long-time and instantaneous protection for aging electrical systems. This legacy bolt-on breaker installs into classic Westinghouse panelboards, offering an exact fit to keep existing infrastructure operational. It delivers a 65 kAIC interrupting rating at 120VAC and is fully cross-referenced to the newer EHD1050.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | EHB1050-R |
| Series | EHB |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 14kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | EHB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse Panelboards |
| Wire Gauge | 14-2 AWG (Cu/Al) |
| Max Wire | 2 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 | Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards are compatible with the EHB1050 circuit breaker?
The EHB1050 is a bolt-on breaker designed primarily for legacy Westinghouse panelboards and Eaton Pow-R-Line C panelboards. It fits into chassis configurations designed for E-Frame and F-Frame breakers.
Is there a modern replacement for the EHB1050?
Yes, the Eaton EHD1050 is the direct modern replacement. As part of the Series C F-Frame family, the EHD1050 shares the same physical dimensions, bolt-on mounting, and electrical ratings as the legacy EHB1050.
Is the EHB1050 rated for direct current (DC) applications?
Yes, in addition to its alternating current (AC) ratings of 120VAC and 277VAC, the EHB1050 is rated for 125VDC applications with a 10kAIC interrupting capacity.
What type of conductors can be used with the EHB1050 lugs?
The factory-installed load side lugs are rated for both copper (Cu) and aluminum (Al) wire. They accept conductor sizes ranging from 14 AWG to 2 AWG.
Can the trip settings on the EHB1050 be adjusted in the field?
No, this breaker features a non-interchangeable, fixed thermal-magnetic trip unit. The long-time overload and instantaneous short-circuit trip functions are factory-set and cannot be modified.
How is the EHB1050 secured to the panelboard bus?
It utilizes a bolt-on connection type. The breaker bolts directly to the panelboard bus, ensuring a secure, high-contact-pressure connection suitable for commercial and industrial distribution systems.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 19 reviews.
- TSThomas S.Verified BuyerReviewingSquare D EHB24060 - 60A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/28/26President NGE
The quality is excellent, but you need to double check when you order that the corrected one gets delivered
- MDMitchell D.Verified BuyerReviewingSquare D EHB14020HID - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars2/4/26Hard to find
Super breakers has just what I was looking for when no one else did!!
- MSMike S.Verified BuyerReviewingSquare D EHB34060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/21/25Fast reliable service, reasonable prices
I recently ordered the incorrect breakers for a job, but I contacted Drew at SuperBreakers and he got me the correct breakers shipped out that day, which I received the next day. He sent me a label to send the wrong breakers back, and I was quickly refunded a restocking fee that I incurred for my mistake. I was able to get the breakers installed, and the power running to meet the deadline. Not to mention, the price was better than I found elsewhere. Thanks Drew!
I would definitely recommend this company if you need fast, reliable service for your electrical product needs. And I'm sure I will use them again.
Thank you SuperBreakers! Nice job Drew!
- DTDavid T.ReviewingSquare D EHB14020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/12/23Everything worked out perfect thanks
Everything worked out perfect thanks again
- GCGULF C.ReviewingSquare D EHB34020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/5/23Perfect condition
This breaker arrived as advert and timely. Perfect condition. Good working condition