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Square D EHB34100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Square D
EHB34100
Molded Case Circuit Breaker
Brand
Square D
SKU
EHB34100
Quantity
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Square D EHB34100 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D EHB34100 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | EHB34100-R |
| Series | EHB |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 4-2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| 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 | 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 |
Quantity
Square D EHB34100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | EHB34100-R |
| Series | EHB |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 4-2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| 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 | 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 |
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Description
Built for commercial and industrial applications, the Square D EHB34100 is a 3-pole, 100A molded case circuit breaker. It utilizes thermal-magnetic technology to provide long-time and instantaneous protection. This bolt-on breaker mounts into legacy Square D NEHB panelboards. For newer installations, the EDB34100 serves as a substitute but requires an NF series panelboard. Rated at 14kAIC at 480Y/277VAC, it includes load-side lugs and features the signature Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | EHB34100-R |
| Series | EHB |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NEHB Panelboards |
| Wire Gauge | 4-2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| 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 | 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
8 answersWhat panelboards are compatible with the EHB34100 circuit breaker?
This breaker is specifically designed for use in legacy Square D NEHB panelboards. It features a bolt-on mounting style to secure directly to the panel bus.
How does the interrupting capacity of the EHB34100 change based on the system voltage?
The interrupting capacity is rated at 65kA when used on a 240V AC system. When installed on 480Y/277V AC systems, the interrupting rating drops to 14kA. Always verify the required fault current for your specific installation.
What wire sizes are accepted by the standard lugs on the EHB34100?
The standard factory lugs accept wire sizes ranging from 4 AWG up to 2/0 AWG. The terminals are rated for both aluminum and copper conductors.
What type of trip mechanism does the EHB34100 utilize?
It features a fixed thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. This provides standard overload and short-circuit protection for your system.
Can I install the EHB34100 in a modern Square D NF panelboard?
No. The EHB34100 is designed exclusively for legacy NEHB panelboards. Newer Square D panelboards require different breaker frames and bus connections.
What does the LI designation mean on this circuit breaker?
The LI designation indicates that the breaker includes Long-Time and Instantaneous trip functions. Long-Time protects against gradual overloads, while the Instantaneous function provides immediate tripping during severe short circuits.
What breaker frame family does the EHB34100 belong to?
It is part of the Square D E-Frame family. This specific EHB configuration is molded specifically for legacy NEHB series lighting and distribution panelboards.
Is the EHB34100 suitable for 480V ungrounded delta systems?
No. This breaker carries a 480Y/277VAC slash rating. Slash-rated circuit breakers are only approved for solidly grounded wye systems where the line-to-ground voltage does not exceed 277 volts. They must not be used on ungrounded or corner-grounded delta systems.
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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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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 4.8 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