Square D EHB340151212 Molded Case Circuit Breaker
- 15A
- 3 Pole
- Bolt-On
Square D
EHB340151212
Molded Case Circuit Breaker
Brand
Square D
SKU
EHB340151212
Quantity
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Square D EHB340151212 - 15A 3 Pole Molded Case Circuit Breaker
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Description
Built for advanced monitoring needs, this 15A three-pole breaker includes a factory-installed auxiliary switch (1A/1B) for remote status indication. It mounts securely into legacy Square D NEHB panelboards, offering a seamless maintenance solution for aging commercial facilities. Upgrading to the modern EDB series would necessitate a new NF panelboard, making this exact replacement highly valuable. It provides a 14kA interrupting capacity at 480Y/277V along with standard Visi-Trip functionality.Specifications
| Brand | Square D |
|---|---|
| Series | EHB |
| Amperage | 15A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Frame Type | EH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (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 | Shunt Trip, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Auxiliary Switch (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
7 answersWhat does the 1212 suffix mean on the EHB340151212?
The 1212 suffix indicates that this breaker includes a factory-installed 1A/1B auxiliary switch. This provides one normally open (NO) and one normally closed (NC) contact for remote status signaling.
What panelboards are compatible with the EHB340151212?
This breaker is designed exclusively for use in legacy Square D NEHB panelboards. It features a specific bolt-on mounting design that will not fit into NQOD, I-Line, or NF panelboards.
Can I replace this EHB breaker with a modern EDB series breaker?
No. While the EDB series is the modern equivalent to the EHB series, EDB breakers are designed for NF panelboards and will not fit into an NEHB panelboard. You must use an EHB series breaker to maintain compatibility with an existing NEHB panel.
Is the Square D EHB series still in active production?
No, the EHB series and the corresponding NEHB panelboards are obsolete and no longer manufactured by Square D.
How does the auxiliary switch in the EHB340151212 operate within a control circuit?
The factory-installed 1A/1B auxiliary switch changes state when the breaker trips or is manually turned off. The normally open and normally closed contacts can be wired to indicator lights, alarms, or remote monitoring systems to signal the breaker's status.
Does this breaker provide a visual indication when it trips?
Yes, Square D EHB breakers feature a Visi-Trip indicator. When the breaker trips due to an overload or short circuit, the handle snaps to a center position and a highly visible red indicator appears to help quickly identify the tripped breaker.
Can the trip settings on the EHB340151212 be adjusted?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time (thermal) and instantaneous (magnetic) trip functions are factory-set and cannot be adjusted in the field.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 19 reviews.
Total 5 star reviews: 16 Total 4 star reviews: 3 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
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