Free Shipping Over $99
Eaton / Westinghouse EHB3020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
EHB3020
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
EHB3020
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Eaton / Westinghouse EHB3020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
15A 3 Pole Molded Case Circuit Breaker
30A 3 Pole Molded Case Circuit Breaker
40A 3 Pole Molded Case Circuit Breaker
Description
Serving as a crucial component for older commercial systems, this 20A, three-pole MCCB delivers reliable long-time and instantaneous protection. The bolt-on configuration fits perfectly into classic Westinghouse panelboards. It serves as a seamless drop-in solution that eliminates the need for retrofit kits, and crosses over to the EHD3020. With a 14kAIC rating at 480Y/277VAC, this E-frame unit includes a fixed thermal-magnetic trip.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | EHB3020-R |
| Series | EHB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480Y/277VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersHow is the EHB3020 secured inside the panelboard?
This breaker uses a bolt-on mounting configuration. Instead of snapping into place, it is mechanically bolted directly to the panel busbars. This provides a highly secure, vibration-resistant connection common in commercial and industrial distribution systems.
Which panelboards accept the EHB3020 breaker?
It is designed specifically for legacy Westinghouse, Cutler-Hammer, and Eaton bolt-on panelboards. Because it utilizes a standard legacy footprint, it fits directly into these classic enclosures without the need for specialized mounting hardware or retrofit adapters.
What is the modern direct replacement for the EHB3020?
The Eaton EHD3020 serves as the official modern cross-reference for this breaker. The EHD3020 shares identical physical dimensions, bolt-on mounting features, and performance characteristics, making it a direct drop-in replacement for aging EHB3020 units.
Can the trip settings on the EHB3020 be adjusted in the field?
No. The breaker is equipped with a non-interchangeable, fixed thermal-magnetic trip unit. Both the long-time thermal overload threshold and the instantaneous magnetic short-circuit pickup are factory-calibrated and cannot be altered.
What conductor types and sizes do the EHB3020 load lugs accept?
The factory-installed load-side lugs are dual-rated for both copper (Cu) and aluminum (Al) conductors. They accommodate wire sizes ranging from 14 AWG up to 10 AWG, providing flexibility for standard 20-amp commercial branch circuits.
Is the EHB3020 suitable for use in DC electrical systems?
Yes. In addition to standard AC voltages, the thermal-magnetic trip mechanism is tested and rated for direct current applications. It can safely interrupt up to 10kA at 250V DC, making it appropriate for specific industrial control circuits and battery-backed power systems.
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