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Square D EHB14050 Molded Case Circuit Breaker
- 50A
- 1 Pole
- Bolt-On
Square D
EHB14050
Molded Case Circuit Breaker
Brand
Square D
SKU
EHB14050
Quantity
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Square D EHB14050 - 50A 1 Pole Molded Case Circuit Breaker
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Description
Part of Square D's discontinued E-Frame series, this 1-pole 50A molded case circuit breaker is engineered for 120/277VAC commercial systems. It features a bolt-on connection designed strictly for legacy NEHB panelboards. The modern EDB14050 replacement requires an upgrade to an NF panelboard and will not fit NEHB enclosures. This unit provides reliable thermal-magnetic protection with a 14kA interrupting rating at 277V and includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | EHB14050-R |
| Series | EHB |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 14kA @ 277VAC |
| Frame Type | EH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14 AWG-2/0 AWG (Cu), 12 AWG-2/0 AWG (Al) |
| Max Wire | 2/0 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, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator |
Product FAQs
6 answersWhich panelboards are compatible with the EHB14050 circuit breaker?
This bolt-on breaker is designed specifically for use in legacy Square D NEHB series panelboards.
Is the Square D EHB14050 circuit breaker still actively manufactured?
No, the EHB series is a legacy product line that has been made obsolete by Square D. Replacements are typically sourced to maintain existing NEHB panelboards without requiring a full panel upgrade.
What wire sizes are accepted by the lugs on the EHB14050?
The factory lugs accept 14 AWG to 2/0 AWG copper wire, or 12 AWG to 2/0 AWG aluminum wire. Ensure proper torque specifications are applied during installation.
How does the interrupting rating differ between 120V and 277V applications?
The EHB14050 provides a 65kAIC rating when applied at 120VAC, but the interrupting capacity drops to 14kAIC when used on 277VAC systems. Verify your available fault current before installation.
Does the EHB14050 mount to a standard DIN rail?
No, this is a bolt-on molded case circuit breaker. It requires a bolted connection directly to the busbar of an NEHB panelboard and cannot be DIN rail mounted.
What type of trip mechanism does the EHB14050 use?
It utilizes a fixed thermal magnetic trip unit, providing both long time thermal overload protection and instantaneous magnetic short circuit protection.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 19 reviews.
Total 5 star reviews: 16 Total 4 star reviews: 3 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
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