Eaton / Cutler-HammerGHB3080S1
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Eaton / Cutler-Hammer GHB3070S1 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
GHB3070S1
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GHB3070S1
Quantity
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Eaton / Cutler-Hammer GHB3070S1 - 70A 3 Pole Molded Case Circuit Breaker
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Description
Designed with a factory-installed 120VAC shunt trip accessory, this 70-amp breaker enables remote tripping for emergency shutdowns or automated control. The bolt-on G-frame unit integrates seamlessly into Eaton Pow-R-Line panelboards and motor control centers. Rated for 14kAIC at 480Y/277VAC, it utilizes fixed thermal-magnetic protection elements. This HACR-rated component supports reverse feeding for flexible commercial installations.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHB3070S1 |
| Series | GHB |
| Amperage | 70A |
| 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, 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, Padlock Attachment |
|---|---|
| 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 indicate on the GHB3070S1 catalog number?
The S1 suffix denotes a factory-installed 120VAC shunt trip with a rear left pigtail. This accessory allows the breaker to be opened remotely via a control signal for emergency shutdowns or automated processes.
What equipment is the GHB3070S1 breaker designed to fit?
This bolt-on G-Frame breaker installs into Eaton Pow-R-Line panelboards, Series C panelboards, switchboards, and motor control centers. It is not compatible with standard plug-on load centers.
How does the GHB3070S1 mount inside the panelboard?
It is a bolt-on circuit breaker that fastens directly to the panelboard bus using screws. This provides a highly secure, low-resistance connection ideal for commercial and industrial environments.
What are the wire gauge requirements for the terminals on this breaker?
The factory lugs accept copper or aluminum conductors ranging from 10 AWG up to 1/0 AWG. Ensure proper torque specifications are followed during installation as outlined by the manufacturer.
Is the GHB3070S1 suitable for reverse-feed installations?
Yes, this thermal-magnetic breaker is rated for reverse-feed use. This allows it to be back-fed when used as a main breaker or in specific generator and solar applications.
Are the trip settings adjustable on this 70A breaker?
No, the GHB3070S1 features a fixed thermal and fixed magnetic trip unit. Both the long-time and instantaneous (LI) trip functions are factory set and cannot be adjusted in the field.
Can this Eaton Series C breaker be used in direct current (DC) systems?
Yes, it carries a DC rating of 125/250VDC with a 14kA interrupting capacity, making it suitable for specific industrial DC control circuits and battery systems.
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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!