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Square D EJB34110 Miniature Circuit Breaker
- 110A
- 3 Pole
- Bolt-On
Square D
EJB34110
Miniature Circuit Breaker
Brand
Square D
SKU
EJB34110
Quantity
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Square D EJB34110 - 110A 3 Pole Miniature Circuit Breaker
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Description
Part of the robust E-Frame family, this 110-amp miniature circuit breaker provides essential long-time and instantaneous trip functions for commercial and industrial facilities. The three-pole configuration ensures consistent thermal-magnetic performance. This unit installs into Square D NF panelboards using a secure bolt-on mounting style. The standard aluminum lugs accommodate a wide range of wire gauges for flexible wiring. Rated for 65kAIC at 480Y/277V, it includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | EJB34110 |
| Series | EJB |
| Amperage | 110A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 277VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 120VAC, 100kA @ 240VAC, 65kA @ 277VAC, 65kA @ 480Y/277VAC |
| Frame Type | EJB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards |
| Wire Gauge | 14-2/0 AWG (Cu), 12-2/0 AWG (Al) |
| Max Wire | 2/0 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Standard Aluminum Lugs |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, cULus, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
8 answersWhat panelboards are compatible with the EJB34110 circuit breaker?
This E-Frame breaker is designed specifically for use in Square D NF panelboards.
What wire sizes are accepted by the terminals on the EJB34110?
The factory-installed lugs accept 14 AWG to 2/0 AWG copper wire, or 12 AWG to 2/0 AWG aluminum wire.
How does this breaker mount into the panelboard?
It utilizes a bolt-on connection to secure directly to the bus of an NF panelboard, ensuring a stable and reliable electrical connection.
What is the maximum interrupting rating for this breaker at 480Y/277VAC?
The EJB34110 has a maximum interrupting rating of 65kA at 480Y/277VAC.
Is the EJB34110 rated for use on 240V systems?
Yes, it can be applied to 120VAC or 240VAC systems, where it carries a higher interrupting rating of 100kA.
Are the trip settings on the EJB34110 adjustable?
No, this breaker features a fixed thermal-magnetic trip unit providing long-time and instantaneous (LI) protection.
What frame family does the EJB34110 belong to?
It is part of the Square D E-Frame molded case circuit breaker family.
What type of protection does the LI trip function provide?
The LI designation indicates thermal-magnetic protection, where the Long-Time (L) function protects against sustained overloads and the Instantaneous (I) function protects against short circuits.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 12 reviews.
Total 5 star reviews: 11 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
12 reviews
- EOEric O.Verified BuyerReviewingSquare D EJB14040 - 40A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/26Breaker Replacement
I needed a replacement breaker fast, and SuperBreakers pulled it off for me without any issues.
- BBBrad B.Verified BuyerReviewingSquare D EJB34125 - 125A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/27/26Breaker Order
Thanks! Ordering was easy and the part was delivered quickly and accurately. All I can ask for!
- RRRodolfo R.Verified BuyerReviewingSquare D EJB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/14/26Satisfied Customer
The breaker was received in good condition and it works good. Lead time was not long it all.
Very happy with SuperBreakers Rep. Good customer service.
- RNRandy N.Verified BuyerReviewingSquare D EJB34070 - 70A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars11/14/25Breaker value
saved a lot compared to what the electrician wanted to charge us, at least half the price.
- TWTimothy W.Verified BuyerReviewingSquare D EJB34020 - 20A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/15/25Circuit Breaker
Product arrived in a timely matter and met expectations to repair the problem that we had.