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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 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