Part of the E-Frame family, this 110A three-phase breaker provides robust overcurrent protection for commercial and industrial electrical systems. It installs seamlessly into Square D NF series panelboards using a secure bolt-on connection, ensuring stable performance under load. Rated for 18 kAIC at 480Y/277V, the unit features a Visi-Trip indicator for rapid fault identification and is HACR rated for HVAC equipment compatibility.
Which panelboards are compatible with the EDB34110 circuit breaker?
This E-Frame breaker is designed specifically for Square D NF series panelboards. It secures directly to the panel bus using a bolt-on connection.
What are the direct replacements if a higher interrupting rating is required?
The EGB34110 and EJB34110 are exact dimensional upgrades for this breaker. The EGB model offers a 35kA interrupting rating, while the EJB provides 65kA at 480Y/277VAC.
Can the EDB34110 be used on a straight 480V Delta system?
No. Circuit breakers with a slash voltage rating like 480Y/277VAC are intended strictly for solidly grounded wye systems. The line-to-ground voltage must not exceed the lower value of 277V.
Can I install this E-Frame breaker in an NQ or I-Line panelboard?
No. NQ panelboards are rated up to 240V and require QO or QOB series breakers. I-Line panelboards require breakers with specific plug-on jaw assemblies. The EDB series is exclusively for NF panels.
How many mounting spaces does this breaker occupy in an NF panel?
The EDB34110 requires three standard circuit spaces, occupying one space per pole along the NF panelboard bus.
Does this breaker require a separate lug kit for installation?
No. Mechanical load-side lugs are factory-installed and included with the breaker. They are dual-rated for terminating either copper or aluminum conductors.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 114 reviews.
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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