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Square D EJB24110 Miniature Circuit Breaker
- 110A
- 2 Pole
- Bolt-On
Square D
EJB24110
Miniature Circuit Breaker
Brand
Square D
SKU
EJB24110
Quantity
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Square D EJB24110 - 110A 2 Pole Miniature Circuit Breaker
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Description
Built for heavy-duty commercial and industrial applications, the Square D EJB24110 is a 2-pole, 110A miniature circuit breaker. The unit provides reliable thermal-magnetic trip functions to protect critical branch circuits. It mounts into Square D NF panelboards using a secure bolt-on connection. Delivering a high interrupting capacity of 100kAIC at 240VAC and 65kAIC at 480Y/277VAC, it handles severe electrical faults. Features include a Visi-Trip indicator and HID/HACR ratings.Specifications
| Brand | Square D |
|---|---|
| Part Number | EJB24110 |
| Series | EJB |
| Amperage | 110A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 120VAC, 100kA @ 240VAC, 65kA @ 480Y/277VAC |
| 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | Aluminum Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, cULus, HACR, HID, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
5 answersWhich panelboards are compatible with the EJB24110 circuit breaker?
This E-frame breaker is designed specifically for use in Square D NF series panelboards. Because it features a bolt-on connection, it must be installed in a panel interior configured for bolt-on branch breakers.
Can I install this bolt-on breaker in a standard QO load center?
No. The EJB24110 is an E-frame breaker designed for commercial NF panelboards. Standard residential QO load centers require QO or QOB series breakers and will not accept E-frame dimensions or mounting hardware.
What wire sizes are accepted by the terminals on the EJB24110?
The factory-installed lugs accept 14 to 2/0 AWG copper wire or 12 to 2/0 AWG aluminum wire. Always verify the specific torque requirements printed on the breaker label before terminating the conductors.
How does the interrupting rating change based on the system voltage?
The EJB24110 provides a 65kA interrupting capacity at 480Y/277VAC. If installed in a lower voltage system, such as 120VAC or 240VAC, the interrupting capacity increases to 100kA.
What protection functions are included in this thermal-magnetic breaker?
It includes fixed long-time and instantaneous (LI) trip functions. The thermal element provides long-time protection against sustained overloads, while the magnetic element offers instantaneous protection against short circuits.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 13 reviews.
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Rating
13 reviews
- JMJessica M.Verified BuyerReviewingSquare D EJB34060 - 60A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/16/26Exactly what we needed
Purchased the Square D EJB34060 60A 3-Pole circuit breaker for a commercial electrical application. The breaker arrived as described, was well packaged, and was the correct Square D part we needed.
Electrical components like this can sometimes be difficult to locate, so it was great to find the exact breaker without having to substitute or modify the existing equipment. Installation went smoothly and the breaker fit and operated as expected.
Very satisfied with the purchase and would order again when we need hard-to-find Square D electrical equipment.
- 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.