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Eaton / Cutler-Hammer GHB1020 Molded Case Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Eaton / Cutler-Hammer
GHB1020
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GHB1020
Quantity
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Eaton / Cutler-Hammer GHB1020 - 20A 1 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer GHB1020 - 20A 1 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHB1020 |
| Series | GHB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 14kA @ 277VAC, 14kA @ 125VDC |
| Frame Type | GHB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line C Panelboards, Series C 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Reverse Feed, Non-Interchangeable Trip |
Quantity
Eaton / Cutler-Hammer GHB1020 - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHB1020-R |
| Series | GHB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 14kA @ 277VAC, 14kA @ 125VDC |
| Frame Type | GHB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line C Panelboards, Series C 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Reverse Feed, Non-Interchangeable Trip |
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Description
Part of the Series C family, this 20-amp single-pole device provides dependable overcurrent protection for commercial and industrial electrical systems. It utilizes proven thermal-magnetic trip technology for consistent performance under varying load conditions. Installs into Eaton Pow-R-Line C and Series C panelboards using a standard bolt-on configuration. This mounting style guarantees a rigid connection that withstands vibrations in demanding environments.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHB1020 |
| Series | GHB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 14kA @ 277VAC, 14kA @ 125VDC |
| Frame Type | GHB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line C Panelboards, Series C 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
8 answersWhat panelboards are compatible with the GHB1020 circuit breaker?
This breaker is designed for use with Eaton Pow-R-Line C and Series C panelboards. It mounts directly to the panelboard bus using a bolt-on connection.
Can I use the GHB1020 in place of a BAB series circuit breaker?
No. While both are bolt-on breakers manufactured by Eaton, the GHB and BAB series have different physical dimensions, frame types, and voltage applications. The GHB1020 is a G-Frame breaker built for 277VAC systems, whereas BAB breakers are typically used in 120/240VAC panels. They are not interchangeable.
How does the interrupting capacity (AIC) vary based on system voltage?
The GHB1020 offers a maximum interrupting capacity of 65kAIC when used in 120VAC applications. However, when installed in a 277VAC system, the interrupting rating drops to 14kAIC. It is critical to verify the available fault current at your specific installation voltage.
Can the GHB1020 be utilized in direct current (DC) control panels?
Yes. In addition to alternating current applications, this thermal-magnetic breaker is safety rated for use in DC systems up to 125VDC, providing an interrupting capacity of 14kAIC.
What wire types and sizes are compatible with the standard lugs?
The factory-installed load lugs on the GHB1020 accept conductor sizes ranging from 14 AWG to 10 AWG. The terminals are rated for use with both copper (Cu) and aluminum (Al) wire.
Is it possible to adjust the trip curve on this circuit breaker?
No. The GHB1020 features fixed thermal and fixed magnetic trip functions for long-time and instantaneous (LI) protection. The trip settings are factory-calibrated and cannot be adjusted by the installer.
Are Eaton GHB1020 and Cutler-Hammer GHB1020 the exact same breaker?
Yes. Eaton acquired the Cutler-Hammer brand and integrated its product lines. A breaker labeled Cutler-Hammer GHB1020 is functionally and physically identical to a modern Eaton GHB1020.
Why is a bolt-on connection preferred for this type of industrial breaker?
Bolt-on connections physically secure the breaker to the panelboard busbar using mechanical fasteners. This creates a vibration-resistant contact that reduces the risk of arcing, heat buildup, and accidental disconnection in commercial or industrial environments.
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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 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.
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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!