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Square D EGB34050SA Miniature Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Square D
EGB34050SA
Miniature Circuit Breaker
Brand
Square D
SKU
EGB34050SA
Quantity
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Square D EGB34050SA - 50A 3 Pole Miniature Circuit Breaker
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Description
Part of the Square D E-frame family, this 50-amp miniature breaker features a factory-installed shunt trip mechanism for remote power disconnection. The unit mounts into standard NF panelboards, providing robust thermal-magnetic protection for commercial facilities. Rated for 65kAIC at 240VAC, it includes standard load side lugs, HACR certification, and a visual trip indicator to streamline maintenance.Specifications
| Brand | Square D |
|---|---|
| Part Number | EGB34050SA |
| Series | EGB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC |
| Frame Type | EGB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards |
| Wire Gauge | 14 AWG-2/0 AWG (Cu), 12 AWG-2/0 AWG (Al) |
| Max Wire | 2/0 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 | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, cULus, HACR, HID, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Visual Trip Indicator |
Product FAQs
6 answersWhich panelboards are compatible with the EGB34050SA circuit breaker?
This E-frame breaker is designed exclusively for use in Square D NF series panelboards. It features a bolt-on connection and cannot be installed in QO, NQ, or I-Line panels.
What does the SA suffix indicate on the EGB34050SA?
The SA suffix means this breaker is equipped with a factory-installed 110-130VAC shunt trip for remote tripping capabilities. Because the shunt trip mechanism is factory-installed, it cannot be added in the field.
How many panel spaces does the EGB34050SA require?
Although it is a 3-pole breaker, the factory-installed shunt trip requires one additional pole space. Therefore, the EGB34050SA will occupy 4 spaces in your NF panelboard.
Can the EGB34050SA be used in series-rated combinations?
Yes, Square D EGB breakers are UL listed for use in series-rated systems when paired with approved upstream main breakers. Always consult the series rating label on your specific NF panelboard to verify the maximum short-circuit current rating for your installation.
What is the difference between EDB, EGB, and EJB breakers?
These are all E-frame breakers designed for NF panelboards, but they have different interrupting ratings at 480Y/277VAC. The EGB is the standard-tier version with a 35kAIC rating. The EDB has a lower interrupting rating of 18kAIC, while the EJB offers a higher rating of 65kAIC.
Does the EGB34050SA feature a visual trip indicator?
Yes, Square D E-frame breakers feature a VISI-TRIP indicator. When the breaker trips due to an overload or short circuit, the handle snaps to a center position and a highly visible red indicator appears, making it easy to identify the tripped breaker in the panel.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 25 reviews.
Total 5 star reviews: 23 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
25 reviews
- RSRobert S.Verified BuyerReviewingSquare D EGB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/21/26New breaker
Great product, exactly what I needed and shipped in a timely manner!
- EBEd B.Verified BuyerReviewingSquare D EGB34100 - 100A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars11/5/25100 amp breaker
Prompt ordering and shipping at a fair price. Thanks
- EBEd B.Verified BuyerReviewingSquare D EGB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/11/25Breaker purchase
quick response and shipping
- TITim I.Verified BuyerReviewingSquare D EGB34040 - 40A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/6/25Problem Solved
The breakers showed up packaged very well and in great shape. The pricing was very competitive and solved our problem sourcing older circuit breakers.
- MKMarvin K.Verified BuyerReviewingSquare D EGB34045 - 45A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Square D EGB34045 3 Pole Circuit Breaker
Breaker and service was great and always has been. Looking forward more business in the future. Thanks.