Designed for 480Y/277V commercial systems, this 100A, 3-pole miniature circuit breaker ensures consistent power distribution and protection. It mounts into Square D NF series panelboards using a dependable bolt-on connection that withstands industrial vibrations. Delivering an 18 kAIC interrupt rating at its maximum voltage, the unit features a non-interchangeable trip and the highly visible Visi-Trip indicator to quickly identify tripped circuits during maintenance.
Which panelboards are compatible with the Square D EDB34100?
This E-frame circuit breaker is designed specifically for use in Square D NF panelboards. It hooks onto the mounting rail and bolts directly to the bus assembly.
How many panel spaces does the EDB34100 require?
As a 3-pole E-frame circuit breaker, it occupies three standard pole spaces in a compatible NF panelboard.
What is the recommended lug torque specification for this breaker?
The required tightening torque depends on the wire size used. For 14 to 10 AWG conductors, torque the lugs to 34.5 lb-in (3.9 N.m). For larger 8 to 2/0 AWG conductors, tighten to 50 lb-in (5.6 N.m).
Is this circuit breaker suitable for HVAC applications?
Yes, the EDB34100 is HACR rated, meaning it is certified and approved for use with heating, air conditioning, and refrigeration systems.
What are the instantaneous trip settings for the EDB34100?
The magnetic instantaneous trip mechanism features a hold current of 1000A and a trip current of 2300A. This means the breaker will hold up to 1000A without an instantaneous trip, but is guaranteed to trip instantly if the fault current reaches 2300A.
What is the ambient temperature calibration for this breaker?
The thermal magnetic trip unit in this breaker is factory calibrated for an ambient operating temperature of 40 degrees Celsius (104 degrees Fahrenheit).
Are there higher interrupting rating alternatives available for this model?
Yes. If your electrical system requires a higher fault current rating than 18kA at 480Y/277VAC, you can upgrade to the EGB34100, which is rated at 35kA, or the EJB34100, rated at 65kA. Both alternatives share the same physical dimensions and fit the exact same NF panelboards.
Does this breaker provide a visual trip indication?
Yes, E-frame breakers feature a signal indicator that visually confirms when a trip has occurred, allowing electricians to quickly identify faulted circuits within the panelboard.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
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.
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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
Rated out of 5 stars
2
Total 4 star reviews: 2
3
Rated out of 5 stars
0
Total 3 star reviews: 0
2
Rated out of 5 stars
0
Total 2 star reviews: 0
1
Rated out of 5 stars
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.
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