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Square D EDB34020SA Miniature Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Square D
EDB34020SA
Miniature Circuit Breaker
Brand
Square D
SKU
EDB34020SA
Quantity
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Square D EDB34020SA - 20A 3 Pole Miniature Circuit Breaker
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Description
Built for commercial power distribution, the Square D EDB34020SA is a 20A, 3-pole miniature circuit breaker equipped with a factory-installed 120VAC shunt trip. This accessory enables remote tripping from external control systems, requiring four total pole spaces for installation. The breaker mounts into Square D NF panelboards via a robust bolt-on connection. Featuring an 18 kAIC rating at 480Y/277VAC, it utilizes fixed thermal-magnetic trip elements to safeguard lighting and HVAC circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | EDB34020SA |
| Series | EDB |
| Amperage | 20A |
| 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 | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 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, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, cULus, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Visual Trip Indicator, Non-Interchangeable Trip |
Product FAQs
8 answersWhat panelboards are compatible with the Square D EDB34020SA breaker?
This bolt-on circuit breaker is designed exclusively for use in Square D NF series lighting panelboards. It cannot be installed in NQ, I-Line, or QO load centers.
Does the SA suffix on the EDB34020SA mean it includes a shunt trip?
Yes, the SA suffix indicates that this breaker comes equipped with a factory-installed 120V AC shunt trip. This allows the breaker to be tripped remotely for safety or control purposes.
How much panel space does the EDB34020SA require with the built-in shunt trip?
Because factory-installed accessories like the shunt trip add an additional pole space to the breaker frame, this 3-pole breaker will require 4 pole spaces to mount in your NF panelboard.
Can I field-install a shunt trip or auxiliary switch on a standard EDB34020 breaker later?
No. Electrical accessories for Square D E-frame breakers, including shunt trips and auxiliary switches, are factory-installed only and cannot be added in the field.
Is the EDB34020SA rated for use with heating, air conditioning, and refrigeration equipment?
Yes. Like all E-frame circuit breakers, the EDB34020SA is UL Listed as HACR type. It is also rated for HID (High-Intensity Discharge) lighting applications.
What are the magnetic trip and hold current settings for this 20A breaker?
The instantaneous magnetic trip on this 20A E-frame breaker has a fixed hold current of 270 Amps and a trip current of 875 Amps.
Are there higher interrupting capacity versions of this breaker available?
Yes. While the EDB34020SA provides an 18 kA interrupting rating at 480Y/277VAC, you can upgrade to the EGB (35 kA) or EJB (65 kA) frame versions if your electrical system requires a higher fault current rating.
What does the Visi-Trip indicator do on this breaker?
Square D E-frame breakers feature a Visi-Trip visual indicator, which shows a highly visible red flag when the breaker has tripped due to an overload or short circuit. This allows maintenance personnel to quickly identify the tripped breaker in a crowded NF panelboard.
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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