Square D EHB34030-1212 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Square D
EHB34030-1212
Molded Case Circuit Breaker
Brand
Square D
SKU
EHB34030-1212
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D EHB34030-1212 - 30A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
40A 3 Pole Molded Case Circuit Breaker
20A 3 Pole Molded Case Circuit Breaker
45A 3 Pole Molded Case Circuit Breaker
Description
Built for commercial facilities, the Square D EHB34030-1212 is a 30A, 3-pole MCCB. It includes a factory-installed 1A/1B auxiliary switch for remote circuit status monitoring. Designed for bolt-on installation, this unit mounts into legacy Square D NEHB panelboards. For modern NF panelboards, the EDB34030 serves as the current equivalent. Delivering 65kAIC at 240V and 14kAIC at 480Y/277V, this thermal-magnetic breaker features a Visi-Trip indicator to easily spot tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | EHB34030-1212 |
| Series | EHB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 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, Alarm Switch, Undervoltage Release, 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 | Visual Trip Indicator |
Product FAQs
6 answersWhich panelboards accept the EHB34030-1212 circuit breaker?
This bolt-on breaker is specifically designed for legacy Square D NEHB panelboards. It is not compatible with newer NF series panelboards, which require EDB series breakers.
What does the -1212 suffix indicate on this Square D catalog number?
The -1212 suffix signifies that the breaker includes a factory-installed 1A/1B auxiliary switch. This provides normally open and normally closed contacts for remote circuit status monitoring.
Are the lugs on this breaker rated for aluminum wire?
Yes, the terminals are dual-rated for both copper and aluminum conductors. Acceptable wire sizes are 14 to 10 AWG for copper and 12 to 10 AWG for aluminum.
Is this breaker suitable for ungrounded 480V delta systems?
No, the 480Y/277V rating indicates it is designed for solidly grounded wye systems where the voltage to ground does not exceed 277V. It should not be applied on 480V ungrounded or corner-grounded delta systems.
How can I identify if this EHB breaker has tripped in the panel?
It features a Visi-Trip indicator, which provides a highly visible red flag in the breaker window when it trips, allowing electricians to quickly locate the faulted circuit.
What type of protection does the EHB34030-1212 provide?
It features a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) functions. The thermal element protects against sustained overloads, while the magnetic element responds immediately to short circuits.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
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.
Same Day Shipping
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.
Expedited Shipments
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.
International Shipping
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
Search
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