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Square D EDB36050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Square D
EDB36050
Molded Case Circuit Breaker
Brand
Square D
SKU
EDB36050
Quantity
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Square D EDB36050 - 50A 3 Pole Molded Case Circuit Breaker
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Description
Part of Square D's E-Frame lineup, the EDB36050 delivers dependable overcurrent and short-circuit protection for commercial and industrial distribution systems. This unit features a bolt-on mounting style designed specifically for installation in Square D NF panelboards. It accepts 14-2/0 AWG copper or 12-2/0 AWG aluminum wire via load side lugs, ensuring a secure connection. Rated to handle 18 kAIC at 480Y/277V, the breaker utilizes fixed thermal-magnetic trip technology and a Visi-Trip flag.Specifications
| Brand | Square D |
|---|---|
| Part Number | EDB36050 |
| Series | EDB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC, 600Y/347VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 14kA @ 600Y/347VAC |
| 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, 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
7 answersWhat panelboards are compatible with the EDB36050 circuit breaker?
This E-Frame breaker is designed exclusively for bolt-on installation in Square D NF series panelboards. It requires three pole spaces for mounting.
What is the difference between Square D EDB, EGB, and EJB breakers?
All three are E-Frame breakers that fit NF panelboards, but they have different interrupting ratings at 480Y/277V. The EDB is standard-rated at 18 kAIC, the EGB is high-interrupting at 35 kAIC, and the EJB is extra-high interrupting at 65 kAIC.
What are the lug tightening torque specifications for the EDB36050?
For the factory-installed aluminum lugs, the required tightening torque is 34.5 lb-in (3.9 N-m) for 14-10 AWG wire, and 49.6 lb-in (5.6 N-m) for 8-2/0 AWG wire.
Can the EDB36050 be used in reverse-feed applications?
Yes, Square D EDB series breakers are suitable for reverse-feed applications. This allows them to be back-fed when utilized as a main breaker in a panelboard.
Is there a direct replacement for the EDB36050 if a higher interrupting rating is required?
Yes, if your system requires a higher fault current rating, you can use the EGB36050 (35 kAIC at 480Y/277V) or the EJB36050 (65 kAIC at 480Y/277V). Both share the same physical dimensions and bolt-on mounting as the EDB36050.
Is the EDB36050 rated for HVAC and lighting loads?
Yes, this breaker is both HACR-rated for heating, air conditioning, and refrigeration equipment, and HID-rated for high-intensity discharge lighting applications.
Does the EDB36050 feature a visual trip indicator?
Yes, it includes the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or short circuit, the handle snaps to a midpoint position and a highly visible red flag appears to help quickly locate the tripped circuit.
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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