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Square D EDB34050SA Miniature Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Square D
EDB34050SA
Miniature Circuit Breaker
Brand
Square D
SKU
EDB34050SA
Quantity
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Square D EDB34050SA - 50A 3 Pole Miniature Circuit Breaker
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Description
The EDB34050SA is a 50A, three-pole miniature circuit breaker designed for commercial and industrial electrical systems. As part of the Square D E-Frame family, it provides dependable overcurrent protection. This unit features a bolt-on mounting style, ensuring a secure connection when installed into Square D NF panelboards.Specifications
| Brand | Square D |
|---|---|
| Part Number | EDB34050SA |
| Series | EDB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 277VAC, 480Y/277VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC, 18kA @ 277VAC, 18kA @ 480Y/277VAC, 25kA @ 120/240VAC |
| Frame Type | EDB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards |
| Wire Gauge | 14-2/0 AWG (Cu), 12-2/0 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 |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Aluminum Lugs Included, Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, cULus, HACR, HID, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Visual Trip Indicator |
Product FAQs
8 answersWhat does the SA suffix indicate on the EDB34050SA catalog number?
The SA suffix designates a factory-installed 120VAC shunt trip accessory. This allows the breaker to be tripped remotely for automation, emergency disconnect, or safety control applications.
What applications typically require a shunt trip breaker like the EDB34050SA?
Shunt trip breakers are commonly used for emergency power-off systems, fire alarm integration, or automated equipment shutdowns where a circuit must be disconnected quickly from a remote location.
Does the shunt trip accessory require an external power source?
Yes, the 120VAC shunt trip mechanism requires an external 120-volt control power source. When a voltage signal is applied to the shunt trip leads, it mechanically opens the breaker contacts.
Can the EDB34050SA be installed in a standard QO or Homeline load center?
No, this is a commercial E-frame bolt-on breaker designed exclusively for NF panelboards. It will not physically fit or connect in QO, Homeline, or I-Line enclosures.
Does the EDB34050SA include a tripped status indicator?
Yes, this E-frame breaker features a Visi-Trip indicator. This provides a highly visible red flag in the breaker window to help you quickly identify a tripped circuit during fault conditions.
Are there higher interrupting capacity alternatives to the EDB34050SA?
Yes, the Square D E-frame family includes the EGB and EJB series. While the EDB offers 18 kAIC at 480Y/277VAC, the EGB provides 35 kAIC, and the EJB delivers 65 kAIC. You must also ensure the alternate breaker includes the SA shunt trip suffix if remote tripping is required.
How does the EDB34050SA connect to the panelboard bus?
It features a direct bolt-on connection. This requires threaded fasteners to secure the breaker terminals to the NF panelboard bus bars, providing a high-reliability connection for commercial and industrial applications.
Can I add an auxiliary switch or a different voltage shunt trip to the EDB34050SA in the field?
No, internal accessories for Square D E-frame breakers, including shunt trips and auxiliary switches, are factory-installed. They cannot be added or modified in the field.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 111 reviews.
Total 5 star reviews: 109 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 87 most recent customer reviews
Last updated 8/7/25
Customers say these circuit breakers arrive quickly and function as expected. Many reviews mention competitive pricing and reliable shipping. The ordering process receives praise for its simplicity, with users noting the website is easy to navigate. Frequent comments address product availability and proper packaging. While some note receiving older stock items, users consistently report the breakers work effectively.
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Rating
111 reviews
- COChris O.Verified BuyerReviewingSquare D EDB34125 - 125A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/26Fast and easy
Locating the product, checking out and delivery were top notch!
- JDJohn D.Verified BuyerReviewingSquare D EDB14020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Great place
My rep has been very responsive and helpful. He always gives me a good deal also
- DHDave H.Verified BuyerReviewingSquare D EDB34020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/6/26Brfeaker
good service and quick ship
- RPRonica P.Verified BuyerReviewingSquare D EDB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/30/26Great Experience from Start to Finish
Great experience! My order arrived on time and everything was exactly as expected. The items were packaged securely, and everything arrived in perfect condition. I appreciate the care taken with packaging and the prompt delivery. I would definitely order from them again!
- TBTheresa B.Verified BuyerReviewingSquare D EDB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/17/26Works as expected
Breaker worked as expected. Price was good and shipping and delivery were expedient. No complaints