Eaton / Cutler-HammerGHB3020S1
Eaton / Cutler-Hammer GHB3020S2 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
GHB3020S2
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GHB3020S2
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Eaton / Cutler-Hammer GHB3020S2 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
Eaton / Cutler-HammerGHB3025S1
25A 3 Pole Molded Case Circuit Breaker
Eaton / Cutler-HammerGHB3015S1
15A 3 Pole Molded Case Circuit Breaker
Eaton / Cutler-HammerGHB3030S1
30A 3 Pole Molded Case Circuit Breaker
Description
Delivering robust overcurrent protection, the Eaton GHB3020S2 is a 3-pole, 20-amp molded case circuit breaker designed for commercial facilities. It utilizes fixed thermal and magnetic trip units to safeguard critical circuits. The breaker bolts securely into Eaton Pow-R-Line and Series C panelboards, as well as compatible switchboards. A key feature is its integrated 240VAC shunt trip, enabling remote shutdown capabilities alongside a 65kAIC interrupt rating at 240VAC.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHB3020S2 |
| Series | GHB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC, 14kA @ 125/250VDC |
| Frame Type | G |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line Panelboards, Series C Panelboards, Switchboards, Motor Control Centers |
| 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (240VAC) |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
8 answersWhat does the S2 suffix mean in the GHB3020S2 catalog number?
The S2 suffix indicates that this breaker includes a factory-installed 110-240V AC or DC shunt trip. This allows the breaker to be tripped remotely via a control signal.
What panelboards are compatible with the Eaton GHB3020S2?
This G-frame breaker is designed for use in Eaton Pow-R-Line panelboards, legacy Series C panelboards, switchboards, and motor control centers.
Does the GHB3020S2 use a plug-on or bolt-on connection?
The GHB series is strictly a bolt-on breaker. It secures directly to the panelboard bus using screws, providing a secure connection that resists vibration and thermal cycling in commercial and industrial environments.
Can the GHB3020S2 be used in DC circuits?
Yes. While primarily used in 480Y/277V AC systems, this breaker is also rated for 125/250V DC applications with a 14kAIC interrupting capacity, making it suitable for industrial DC control panels and battery systems.
Are the trip settings adjustable on the GHB3020S2?
No. This breaker features a fixed thermal-magnetic trip unit. The LI designation means it provides Long-Time (thermal overload) and Instantaneous (magnetic short-circuit) protection, but neither function can be manually adjusted in the field.
How does the shunt trip feature improve safety?
The factory-installed shunt trip allows the breaker to be opened remotely via a control voltage signal. This is critical for emergency shutdown systems, allowing operators or automated safety relays to instantly de-energize the circuit during a hazard.
What wire sizes and materials are compatible with the GHB3020S2 lugs?
The factory-installed lugs accept 14 AWG to 10 AWG conductors. They are dual-rated for both copper (Cu) and aluminum (Al) wire, providing flexibility during installation.
What frame size is the GHB3020S2?
This breaker belongs to the Eaton Series C G-frame family. It shares the same physical footprint as other GHB, GHC, and GD breakers, making it a direct fit for compatible Pow-R-Line panelboards.
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 30 reviews.
Reviews Summary
Generated by AI from 30 most recent customer reviews
Last updated 9/20/26
Customers say these breakers function reliably and arrive quickly with proper packaging. The ordering process is straightforward, and products consistently match descriptions. Many reviews highlight fast shipping, competitive pricing, and availability. Users appreciate the condition of refurbished units and easy online ordering. One customer reported receiving an incorrect amperage breaker despite paying for expedited delivery. Another noted disappointment when duplicate orders were not consolidated to reduce freight costs. Overall, customers value the quick procurement and dependable product quality.
Search
Rating
30 reviews
- TGTimothy G.Verified BuyerReviewingEaton / Cutler-Hammer GHB3020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26Used model
Breaker ohm tested out fine and currently working on load test with a longer term battery charger. So far so good. Packaged very well no visible damages during shipping. Even received a follow up call from customer that I missed.
- CKChristopher K.Verified BuyerReviewingEaton / Cutler-Hammer GHB3030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/16/26Great and easy support
Easy ordering process, and always helpful over support
- DMDustin M.Verified BuyerReviewingEaton / Cutler-Hammer GHB3030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/31/26Great Price and Worked as Expected
Bought the renewed breaker and all works as expected and saved us money. Great price and availability. Thank you.
- MWMARK W.Verified BuyerReviewingEaton / Cutler-Hammer GHB1020 - 20A 1 Pole Molded Case Circuit BreakerRated 3 out of 5 stars7/21/26Good Product, but Disappointed With the Service
Good product, but I was disappointed with the service. I accidentally placed two separate orders and ended up paying freight on both. I had requested that they combine the orders, and had that been done with the freight waived, it would have saved me money.
Other than that, everything was good. I’m just disappointed that no one communicated this to me.
- AWAnthony W.Verified BuyerReviewingEaton / Cutler-Hammer GHB3080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/7/26Breaker
Item came quick and as described. Simple and easy process!