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Square D EJB24020 Miniature Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Square D
EJB24020
Miniature Circuit Breaker
Brand
Square D
SKU
EJB24020
Quantity
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Square D EJB24020 - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Square D EJB24020 - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | EJB24020 |
| Series | EJB |
| Amperage | 20A |
| 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 | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 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 |
|---|---|
| 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, HID Rated, Visual Trip Indicator |
Quantity
Square D EJB24020 - 20A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | EJB24020-R |
| Series | EJB |
| Amperage | 20A |
| 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 | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 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 |
|---|---|
| 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, HID Rated, Visual Trip Indicator |
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Description
Rated for 20 amps, this 2-pole E-Frame circuit breaker delivers dependable power distribution for commercial and industrial facilities. It is designed to bolt into Square D NF panelboards, ensuring a tight, reliable connection for branch circuits. The breaker offers a 65kAIC interrupting rating at 480Y/277VAC and includes fixed thermal-magnetic trip functions. It is both HACR and HID rated for specialized lighting and HVAC loads, complete with a Visi-Trip indicator for quick status checks.Specifications
| Brand | Square D |
|---|---|
| Part Number | EJB24020 |
| Series | EJB |
| Amperage | 20A |
| 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 | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 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 |
|---|---|
| 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, HID Rated, Visual Trip Indicator |
Product FAQs
7 answersWhat panelboards are compatible with the EJB24020 circuit breaker?
The EJB24020 is a bolt-on E-frame breaker designed specifically for use in Square D NF panelboards. It is not compatible with NQ or I-Line panels.
What does the 65kAIC rating at 480Y/277V mean for this breaker?
This rating indicates the maximum fault current (65,000 amps) the breaker can safely interrupt at 480Y/277V without sustaining damage. This high interrupting capacity makes it suitable for commercial and industrial facilities with high available fault currents.
Can I use the EJB24020 to replace an EDB24020 or EGB24020?
Yes. The EJB24020 has the highest interrupting rating (65kAIC at 480Y/277V) in the E-frame family. It can safely replace the lower-rated EDB (18kAIC) or EGB (35kAIC) breakers of the same amperage and pole count, provided the panel accepts bolt-on E-frame breakers.
What wire sizes are accepted by the EJB24020 terminals?
The standard lugs on this breaker accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire. Ensure conductors are properly torqued according to the manufacturer specifications printed on the breaker faceplate.
Is the EJB24020 suitable for use with heating, air conditioning, and refrigeration equipment?
Yes, all Square D EDB, EGB, and EJB circuit breakers are UL Listed as HACR type, making them safe and compliant for use with HVACR motor loads.
How does the bolt-on connection of the EJB24020 benefit commercial installations?
Bolt-on breakers secure directly to the panel bus with screws, providing a highly reliable, vibration-resistant connection. This is critical in commercial and industrial environments where high fault currents or mechanical vibrations could loosen plug-on connections.
Is the EJB24020 rated for switching lighting loads?
Yes, this breaker is UL Listed for High Intensity Discharge (HID) applications, making it suitable for switching HID lighting loads in commercial environments.
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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.
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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.
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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.
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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 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.