Eaton / Cutler-HammerGHB3025S1
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Eaton / Cutler-Hammer GHB3030S1 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
GHB3030S1
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GHB3030S1
Quantity
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Eaton / Cutler-Hammer GHB3030S1 - 30A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial power distribution, the GHB3030S1 is a 3-pole, 30A molded case circuit breaker from Eaton's Series C family. It is built for heavy-duty industrial and motor control centers. This bolt-on breaker installs into Eaton Pow-R-Line and Series C panelboards. It features standard lug terminals supporting 10-1/0 AWG wire. Rated for 14 kAIC at 480Y/277V, it delivers robust thermal-magnetic protection. A factory-installed 120VAC shunt trip allows for remote circuit interruption.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHB3030S1 |
| Series | GHB |
| Amperage | 30A |
| 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, Undervoltage Release, Alarm Switch |
|---|---|
| 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 |
Product FAQs
7 answersWhat does the S1 suffix mean in the GHB3030S1 catalog number?
The S1 suffix indicates this breaker is equipped with a factory-installed 120VAC shunt trip. This allows the breaker to be tripped remotely via a control signal, making it ideal for emergency stop circuits or automated load shedding.
How is the shunt trip accessory wired on this breaker?
The factory-installed 120VAC shunt trip includes pigtail leads that exit the rear left side of the breaker case. These leads must be wired to a dedicated control circuit with cutoff provisions.
Can the Eaton GHB3030S1 be reverse fed?
Yes, this thermal-magnetic circuit breaker is suitable for reverse feed applications. You can safely supply line power to either the top or bottom terminals without affecting the breaker's protection characteristics.
Which electrical panels accept the GHB3030S1 bolt-on breaker?
This G-Frame bolt-on breaker is engineered for installation in Eaton Pow-R-Line panelboards, Series C panelboards, motor control centers, and compatible switchboards.
Is the Eaton GHB3030S1 interchangeable with Cutler-Hammer or Westinghouse versions?
Yes. Eaton acquired the electrical divisions of both Westinghouse and Cutler-Hammer. A GHB3030S1 breaker bearing any of these three brand names is physically and electrically identical and can be used interchangeably.
Are the thermal or magnetic trip settings adjustable on the GHB3030S1?
No, this G-Frame breaker comes with a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous trip parameters are factory set for 30 amps and cannot be adjusted in the field.
What safety features does the GHB3030S1 utilize for clearing short circuits?
This Series C breaker utilizes a patented contact design featuring high-speed blow-open action. When a high-level fault occurs, electromechanical forces rapidly separate the contacts before the mechanical trip mechanism fully actuates, reducing let-through current.
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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!