Square D EH14050 Molded Case Circuit Breaker
- 50A
- 1 Pole
- Plug-On
Quantity
Square D EH14050 - 50A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A drop-in solution for aging electrical systems, this 50A thermal-magnetic breaker provides essential overload and short-circuit protection. It is specifically engineered to mount into Square D NEHB panelboards using a standard plug-on configuration. For facilities upgrading their hardware, this legacy unit can be substituted with the EHB14050. It features a 65 kAIC interrupt rating at 120VAC and includes the signature Visi-Trip mechanism for rapid identification of tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | EH14050 |
| Series | EH |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 277VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 14kA @ 277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-2 AWG (Cu), 12-2 AWG (Al) |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Trip-Free Mechanism, Quick-Make/Quick-Break |
Product FAQs
6 answersWhat panelboards are compatible with the EH14050 circuit breaker?
The EH14050 is designed exclusively for use in legacy Square D NEHB panelboards. It will not fit in newer NF or NQ series panelboards.
Is there a direct replacement for the legacy EH14050 breaker?
Yes, the EHB14050 is a direct substitute for this unit. It shares the same physical dimensions and mounts into the exact same NEHB panelboard configuration.
What type of wire and gauge range is supported by the EH14050 terminals?
The factory-installed lugs accept either copper or aluminum conductors. The supported wire range is 14 AWG to 2 AWG for copper, and 12 AWG to 2 AWG for aluminum.
What do the LI trip functions indicate on this breaker?
The LI designation means this thermal magnetic breaker provides Long-Time overload protection and Instantaneous short-circuit protection.
Can this 1-pole breaker be used in 277V lighting circuits?
Yes, the EH14050 is rated for 277VAC applications with a 14kA interrupting capacity. This makes it suitable for commercial 277V lighting and single-phase loads.
Does the EH14050 feature a tripped circuit indicator?
Yes, this breaker includes the Square D Visi-Trip mechanism. When the breaker trips, a highly visible red indicator appears to help quickly identify the faulted circuit in the panelboard.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 7 reviews.
- TSThomas S.Verified BuyerReviewingSiemens EH3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/6/25Great
Thanks
- JMJim M.ReviewingSiemens EH3B040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/24/23They fit perfectly and saved
They fit perfectly and saved us a lot of money by being able to replace just these breakers
- KHKen H.ReviewingSiemens EH3B030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/12/23Great service
Great service and products fast shipping
- JSJerry S.ReviewingSiemens / ITE EH3B070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/20/22Great Price - Breakers Work Fine
My local Supplier was charging me three times the price for a breaker that i bought on super Breakers.
- MRMatt R.ReviewingSiemens EH3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/6/2020 Amp Breaker
Received item quickly and in great shape. Thank you!!!