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Eaton / Cutler-Hammer GHC3070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
GHC3070
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GHC3070
Quantity
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Eaton / Cutler-Hammer GHC3070 - 70A 3 Pole Molded Case Circuit Breaker
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Description
The GHC3070 is a 3-pole, 70A molded case circuit breaker from Eaton's Series C family. Built for commercial and industrial distribution, this G-frame device utilizes a fixed thermal-magnetic trip unit to deliver dependable long-time and instantaneous (LI) protection. Designed for flexible integration, this unit-mount MCCB installs into Series C panelboards, OEM panels, and motor control centers. Rated 14kAIC at 480Y/277VAC, it is HACR rated and fully capable of reverse feed applications.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GHC3070 |
| Series | GHC |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 14kA @ 480Y/277VAC, 14kA @ 125/250VDC |
| Frame Type | GHC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, OEM Panels, Enclosures, Motor Control Centers, DIN Rail (with adapter) |
| Wire Gauge | 10-1/0 AWG |
| 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
8 answersWhat types of enclosures or panels are compatible with the GHC3070?
This G-frame breaker is designed for use in Eaton Series C panelboards, motor control centers, and custom OEM panels. It utilizes a feed-thru connection for surface mounting.
Can I install the GHC3070 on a standard DIN rail?
Yes, while it is natively a unit mount breaker, it can be installed on a standard 35mm DIN rail using a specific Eaton DIN rail adapter plate.
Can this breaker be used on a 480V ungrounded delta system?
No. The 480Y/277VAC rating indicates it is slash-rated. It must only be applied on solidly grounded wye systems where the line-to-ground voltage does not exceed 277V. It is not suitable for 480V ungrounded or corner-grounded delta systems.
Can the GHC3070 be used in DC applications?
Yes, this thermal-magnetic breaker is rated for DC use up to 125/250VDC with a 14kA interrupting capacity. This makes it suitable for specific industrial control or battery backup circuits requiring a 3-pole configuration.
What are the acceptable wire sizes for the GHC3070 terminals?
The standard factory lugs accept wire gauges from 10 AWG up to 1/0 AWG. Ensure you use the correct torque specifications provided on the breaker faceplate during installation.
Does the GHC3070 feature adjustable trip settings?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous protection parameters are factory set and cannot be adjusted in the field.
Is there a difference between the Cutler-Hammer GHC3070 and the Eaton GHC3070?
No. Eaton acquired Cutler-Hammer and continues to manufacture the Series C G-frame breakers under the Eaton brand. The GHC3070 catalog number remains identical and fully interchangeable.
Is the GHC3070 suitable for reverse feed applications?
Yes. Like all Eaton Series C G-frame molded case circuit breakers, the GHC3070 is suitable for reverse feed use. This allows for flexible wiring configurations in control panels and switchboards.
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Reviews
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Customers rate this product 5.0 out of 5 based on 1 review.
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Rating
1 review
- WSWilliam S.ReviewingEaton / Cutler-Hammer GHC2030 - 30A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/13/22Good Experience
Everything came in as described and on time