Eaton / Cutler-HammerGHB3090S1
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Eaton / Cutler-Hammer GHB3100S1 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
GHB3100S1
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GHB3100S1
Quantity
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Eaton / Cutler-Hammer GHB3100S1 - 100A 3 Pole Molded Case Circuit Breaker
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Description
Featuring a built-in 120VAC shunt trip, the Eaton GHB3100S1 enables remote tripping for enhanced control. This 100A, 3-pole MCCB is part of the reliable Series C G-Frame family. The bolt-on configuration ensures a secure connection within Eaton Pow-R-Line panelboards and motor control centers. It includes load side lugs accepting 10-1/0 AWG conductors. Capable of interrupting 14 kAIC at 480Y/277VAC, the device is HACR rated, supports reverse feed, and complies with UL 489 standards.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHB3100S1 |
| Series | GHB |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC, 14kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards, Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Shunt Trip (120VAC) |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
6 answersWhat does the S1 suffix indicate on the GHB3100S1 circuit breaker?
The S1 suffix means this breaker comes with a factory-installed 120VAC shunt trip, which allows for remote tripping of the breaker. It features a rear connection with a left pigtail.
Can the Eaton GHB3100S1 replace older Cutler-Hammer or Westinghouse breakers?
Yes, Eaton Series C GHB circuit breakers are direct replacements for legacy Cutler-Hammer and Westinghouse GHB breakers of the same rating.
Which panelboards are compatible with the GHB3100S1?
This G-frame bolt-on breaker is designed for use in Eaton Pow-R-Line panelboards, Series C panelboards, switchboards, and motor control centers.
What wire sizes are accepted by the lugs on the GHB3100S1?
The load side lugs accept 10 AWG to 1/0 AWG copper or aluminum (Cu/Al) conductors.
Can the GHB3100S1 be reverse fed?
Yes, this thermal-magnetic circuit breaker is suitable for reverse feed applications.
Are the trip settings adjustable on the GHB3100S1?
No, this breaker features a fixed thermal and fixed magnetic trip unit, meaning the long-time and instantaneous trip settings cannot be adjusted in the field.
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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!