Square D EHB34020-1042 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Quantity
Square D EHB34020-1042 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial distribution, this 3-pole, 20A MCCB belongs to the legacy Square D E-Frame lineup. It provides reliable thermal-magnetic protection and includes a factory-installed shunt trip for remote disconnect capabilities. This bolt-on breaker installs into classic Square D NEHB panelboards. For modern upgrades, it is replaced by the EDB34020, which requires an NF series panelboard. Rated 14 kAIC at 480Y/277V, it features a Visi-Trip indicator for rapid fault identification.Specifications
| Brand | Square D |
|---|---|
| Part Number | EHB34020-1042 |
| Series | EHB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Frame Type | E |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-10 AWG (Cu/Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
6 answersWhich panelboards are compatible with the EHB34020-1042?
This bolt-on circuit breaker is designed specifically for use in legacy Square D NEHB panelboards. It is not compatible with modern NF series panelboards.
Can I use the EDB34020 as a direct replacement for the EHB34020-1042?
No. Although the EDB34020 is the modern equivalent for 20A, 3-pole applications, it is designed for NF series panelboards and will not physically fit into a legacy NEHB panelboard.
What does the -1042 suffix indicate on this Square D breaker?
The -1042 suffix signifies that the breaker includes a factory-installed shunt trip. This accessory allows the breaker to be opened remotely via a separate control voltage signal.
How does the Visi-Trip indicator assist with troubleshooting?
When the breaker trips, the handle moves to a center position and a bright red indicator appears in the breaker window. This provides immediate visual confirmation of a tripped circuit, speeding up fault identification in a panel.
How do I properly reset the breaker after a trip?
To reset the breaker, you must first push the handle completely to the "OFF" position to re-latch the internal mechanism. Once reset, push the handle firmly back to the "ON" position.
Is the EHB34020-1042 suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires group motor protection.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 19 reviews.
- TSThomas S.Verified BuyerReviewingSquare D EHB24060 - 60A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/28/26President NGE
The quality is excellent, but you need to double check when you order that the corrected one gets delivered
- MDMitchell D.Verified BuyerReviewingSquare D EHB14020HID - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars2/4/26Hard to find
Super breakers has just what I was looking for when no one else did!!
- MSMike S.Verified BuyerReviewingSquare D EHB34060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/21/25Fast reliable service, reasonable prices
I recently ordered the incorrect breakers for a job, but I contacted Drew at SuperBreakers and he got me the correct breakers shipped out that day, which I received the next day. He sent me a label to send the wrong breakers back, and I was quickly refunded a restocking fee that I incurred for my mistake. I was able to get the breakers installed, and the power running to meet the deadline. Not to mention, the price was better than I found elsewhere. Thanks Drew!
I would definitely recommend this company if you need fast, reliable service for your electrical product needs. And I'm sure I will use them again.
Thank you SuperBreakers! Nice job Drew!
- DTDavid T.ReviewingSquare D EHB14020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/12/23Everything worked out perfect thanks
Everything worked out perfect thanks again
- GCGULF C.ReviewingSquare D EHB34020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/5/23Perfect condition
This breaker arrived as advert and timely. Perfect condition. Good working condition