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Square D EJB24070 Miniature Circuit Breaker
- 70A
- 2 Pole
- Bolt-On
Square D
EJB24070
Miniature Circuit Breaker
Brand
Square D
SKU
EJB24070
Quantity
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Square D EJB24070 - 70A 2 Pole Miniature Circuit Breaker
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Description
Manufactured by Square D, the EJB24070 is a 2-pole, 70A miniature circuit breaker from the E-Frame series. It provides dependable thermal-magnetic protection for commercial and industrial branch circuits. This unit installs into Square D NF panelboards using a secure bolt-on mounting style. It accepts 14-2/0 AWG copper or 12-2/0 AWG aluminum wiring via standard lug terminals. Rated for 65 kAIC at 480Y/277VAC, it features a Visi-Trip indicator for quick fault identification.Specifications
| Brand | Square D |
|---|---|
| Part Number | EJB24070 |
| Series | EJB |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 120VAC, 100kA @ 240VAC, 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 | Aluminum Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, cULus, HACR, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
7 answersWhat panelboards are compatible with the EJB24070 circuit breaker?
This E-frame breaker is designed exclusively for use in Square D NF series panelboards. It bolts directly onto the panelboard bus.
Can I use the EJB24070 to replace an EDB24070 or EGB24070?
Yes. The EJB24070 shares the exact physical dimensions and mounting as the EDB and EGB versions but offers a higher interrupting rating of 65kA at 480Y/277VAC. It serves as a direct, higher-rated replacement.
What are the wire size and torque specifications for the EJB24070?
The lugs accept 14 to 2/0 AWG copper or 12 to 2/0 AWG aluminum wire. The required tightening torque is 34.5 lb-in for 14 to 10 AWG wire, and 49.6 lb-in for 8 to 2/0 AWG wire.
What does the J in the EJB24070 part number indicate?
In Square D E-frame breakers, the middle letter designates the interrupting rating. The J indicates a 65kA interrupting capacity at 480Y/277VAC, which is the highest tier compared to the D (18kA) and G (35kA) models.
Is the EJB24070 rated for use with HVAC equipment and HID lighting?
Yes. This breaker is both HACR rated for heating, air conditioning, and refrigeration motor loads, and HID rated for high intensity discharge lighting circuits.
How does the EJB24070 mount into the panelboard?
It features a bolt-on connection. The breaker is secured directly to the NF panelboard bus using mounting bolts, which provides a secure and reliable connection for commercial and industrial applications.
Does the EJB24070 include ground fault protection?
No. The standard EJB24070 provides thermal magnetic overload and short circuit protection. Ground fault protection is only included on Square D E-frame models with an EPD suffix.
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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.