Part of the E-Frame series, the Square D EDB14030 is a 1-pole, 30A miniature circuit breaker. Designed for commercial and industrial environments, it provides dependable thermal-magnetic protection for lighting and distribution circuits. This bolt-on breaker installs into Square D NF panelboards. It accepts 14-6 AWG copper or 12-6 AWG aluminum wire via included lugs, ensuring a secure connection. Featuring a 25kAIC rating at 120VAC, it is HACR and HID rated with a built-in Visi-Trip indicator.
Can the EDB14030 be installed in a Square D NQ panelboard?
No. The EDB14030 is an E-frame breaker designed exclusively for Square D NF panelboards. NQ panelboards operate at lower voltages and require QO or QOB style circuit breakers.
What is the difference between the EDB14030, EGB14030, and EJB14030?
These breakers share the same physical frame size and panelboard compatibility but have different short-circuit interrupting capacities at 277V. The EDB is rated at 18kAIC, the EGB is rated at 35kAIC, and the EJB is rated at 65kAIC.
Is the EDB14030 suitable for HVAC and lighting applications?
Yes. This circuit breaker is HACR rated for heating, air conditioning, and refrigeration equipment. It is also HID rated for controlling high-intensity discharge lighting loads.
What is the required tightening torque for the load lugs?
The factory-installed lug requires a tightening torque of 30.1 lb-in (3.4 N.m) for both copper and aluminum conductors ranging from 14 AWG to 6 AWG.
Does the EDB14030 require a separate mounting kit to attach to the panel?
No. This is a bolt-on breaker with the mounting hardware integrated directly into the E-frame housing, allowing it to attach seamlessly to the bus of an NF panelboard.
Is it safe to use this 1-pole breaker on a 480V delta system?
No. Because it is a 277V rated 1-pole breaker, it is only safe for use on solidly grounded 480Y/277V wye systems. It must not be installed on ungrounded or corner-grounded 480V delta configurations, as the voltage to ground during a fault could exceed the 277V rating of the breaker.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 111 reviews.
5.0
Rated 5.0 out of 5 stars
Based on 111 reviews
5
Rated out of 5 stars
109
Total 5 star reviews: 109
4
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2
Total 4 star reviews: 2
3
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Total 3 star reviews: 0
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Total 2 star reviews: 0
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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.
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
DH
Dave H.
Verified Buyer
Reviewing
Square D EDB34020 - 20A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/6/26
Brfeaker
good service and quick ship
RP
Ronica P.
Verified Buyer
Reviewing
Square D EDB34015 - 15A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
6/30/26
Great 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!
TB
Theresa B.
Verified Buyer
Reviewing
Square D EDB34015 - 15A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
6/17/26
Works as expected
Breaker worked as expected. Price was good and shipping and delivery were expedient. No complaints