Part of the E-Frame series, this 30-amp miniature circuit breaker delivers robust thermal-magnetic protection for commercial and industrial electrical systems. It is specifically designed to handle higher voltage applications up to 600Y/347VAC. The unit installs into Square D NF panelboards using a secure bolt-on mounting connection. It accepts 14-6 AWG copper or 12-6 AWG aluminum wire via standard lug terminals.
Which panelboards are compatible with the EDB16030 breaker?
This E-frame breaker is designed specifically for use in Square D NF series panelboards. It features a bolt-on mounting design to connect directly to the panel bus.
What are the acceptable wire sizes for the lugs on this 30A E-frame breaker?
The factory-installed lugs accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire.
How does the EDB16030 differ from EGB16030 and EJB16030 breakers?
They share the same physical footprint and 1-pole 30A rating for NF panelboards, but differ in interrupting capacity. The EDB is rated 18kAIC at 480Y/277VAC, while the EGB is rated 35kAIC and the EJB is rated 65kAIC at the same voltage.
Can this 1-pole breaker be used in 277V lighting circuits?
Yes, the EDB16030 is rated for 480Y/277VAC and 600Y/347VAC systems, making it suitable for 277V commercial lighting applications. It provides an 18kAIC interrupting rating at 277V.
Does this breaker feature adjustable trip settings?
No, the thermal magnetic trip unit on this E-frame breaker has fixed long time and fixed instantaneous trip functions.
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Shipping
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 114 reviews.
5.0
Rated 5.0 out of 5 stars
Based on 114 reviews
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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.
Square D EDB34020 - 20A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
10/20/26
Breaker 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.
AM
Alex M.
Verified Buyer
Reviewing
Square D EDB34070 - 70A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
10/19/26
Another 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!
JL
Jeffery L.
Verified Buyer
Reviewing
Square D EDB34125 - 125A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
10/16/26
Square D Breakers
Good company & prices reasonable.
CO
Chris O.
Verified Buyer
Reviewing
Square D EDB34125 - 125A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/4/26
Fast and easy
Locating the product, checking out and delivery were top notch!
JD
John D.
Verified Buyer
Reviewing
Square D EDB14020 - 20A 1 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/16/26
Great place
My rep has been very responsive and helpful. He always gives me a good deal also