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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 114 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 10/21/26
Customers say these breakers perform as expected and arrive quickly. Fast shipping and competitive pricing are frequently mentioned, with many noting significant savings compared to local suppliers. Customers appreciate the easy-to-use website, responsive sales representatives, and reliable delivery. Products consistently arrive in good condition and well-packaged. Common feedback highlights dependable service, wide product availability, and seamless ordering processes. Customers report using this supplier repeatedly for their breaker needs.
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Rating
114 reviews
- BBenVerified BuyerReviewingSquare D EDB34020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/20/26Breaker ordered and delivered.
Called in as a last attempt because my regular supplier didn't have any of these in stock. I got a very friendly salesperson, and they sold me a new breaker for less than half of what my standard supplier would have. Definitely going here again.
- AMAlex M.Verified BuyerReviewingSquare D EDB34070 - 70A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/19/26Another Perfect Order
SuperBreakers is an amazing resource for the company I work for. Their prices are very competitive to local suppliers and lower prices than we can get in our work area.
Thank you SuperBreakers!
- JLJeffery L.Verified BuyerReviewingSquare D EDB34125 - 125A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/16/26Square D Breakers
Good company & prices reasonable.
- 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