Eaton GHB Series C Molded Case...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$101.20
Eaton GHB Series C Molded Case Circuit Breaker 277/480 VAC

Eaton GHB Series C Molded Case Circuit Breaker 277/480 VAC

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Model: GHB1020

In Stock (leaves warehouse same day if ordered before 3pm ET)

$101.20
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Eaton GHB Series C Molded Case Circuit Breaker 277/480 VAC 125 VDC Thermal Magnetic Protection

Professional Circuit Protection with Fixed Thermal and Magnetic Trip Technology

The Eaton GHB Series C molded case circuit breaker delivers reliable electrical protection for commercial and industrial applications. This UL Listed circuit breaker features fixed thermal and magnetic trip technology with 277 VAC and 125 VDC voltage ratings, providing dependable overcurrent protection in a compact G-frame design. The complete breaker assembly offers 14 kAIC interrupt rating at 277 VAC with 50/60 Hz frequency compatibility for versatile installation requirements.

Professional Features & Benefits

  • Dual Voltage Rating (277 VAC/125 VDC): Versatile voltage compatibility supports both AC and DC applications in commercial and industrial environments.
  • Fixed Thermal & Magnetic Trip: Reliable overcurrent protection technology provides consistent performance and precise trip characteristics.
  • 14 kAIC Interrupt Rating: High fault current interruption capability ensures safe operation in demanding electrical systems.
  • UL Listed Certification: Meets rigorous safety standards for professional electrical installations and code compliance.
  • Compact G-Frame Design: Space-efficient design maximizes panel utilization.
  • Series C Construction: Enhanced design features deliver improved performance and reliability for critical applications.

Technical Specifications

  • Certifications: UL Listed
  • Circuit Breaker Frame Type: Complete breaker
  • Circuit Breaker Type: GHB
  • Compliances: Federal Specifications Classification W-C375B
  • Frame: G
  • Frequency Rating: 50/60 Hz
  • Interrupt Rating: 14 kAIC at 277 Vac
  • Product Details: Molded case circuit breaker
  • Series: Series C
  • Trip Type: Fixed thermal, fixed magnetic
  • Voltage Rating: 277 Vac, 125 Vdc

Professional Applications

  • Commercial Building Electrical Systems
  • Industrial Control Panels
  • Motor Control Centers
  • Distribution Panels
  • Lighting Circuits
  • HVAC Equipment Protection
  • Manufacturing Facilities

Why Choose Eaton Quality?

Eaton GHB Series C circuit breakers combine proven thermal magnetic protection technology with UL Listed safety certification and Federal Specifications compliance. The robust G-frame construction and Series C enhancements ensure long-term reliability in demanding electrical environments, backed by Eaton's commitment to professional-grade electrical protection solutions.

Variant Specifications

Number of PolesChoose Amperage RatingSKU
Single-Pole15CGHB1015
Single-Pole20CGHB1020
Single-Pole25AGHB1025
Single-Pole30AGHB1030
Single-Pole40CGHB1040
Single-Pole45CGHB1045
Single-Pole60CGHB1060
Single-Pole70CGHB1070
Single-Pole80CGHB1080
Single-Pole90CGHB1090
Single-Pole100AGHB1100
Two-Pole15CGHB2015
Two-Pole20CGHB2020
Two-Pole25CGHB2025
Two-Pole30CGHB2030
Two-Pole35CGHB2035
Two-Pole40CGHB2040
Two-Pole45CGHB2045
Two-Pole50CGHB2050
Two-Pole60CGHB2060
Two-Pole70CGHB2070
Two-Pole80CGHB2080
Two-Pole00CGHB2100
Three-Pole15CGHB3015
Three-Pole20CGHB3020
Three-Pole25CGHB3025
Three-Pole30CGHB3030
Three-Pole35CGHB3035
Three-Pole40CGHB3040
Three-Pole45CGHB3045
Three-Pole50CGHB3050
Three-Pole60CGHB3060
Three-Pole70CGHB3070
Three-Pole80CGHB3080
Three-Pole90CGHB3090
Three-Pole100AGHB3100

Manufacturer Resources

Spec Sheet

Product Specs

Product Length Depth:
2.63 in
Department:
Electrical
Compliances:
Federal Specifications Classification W-C375B
Series:
Series C
Product Type:
Circuit Breaker
Certifications:
UL Listed
Circuit Breaker Frame Type:
Complete breaker
Trip Type:
Fixed thermal, fixed magnetic
Product Group:
Circuit Protection
Circuit Breaker Type:
GHB
Frequency Rating:
50/60 Hz
Product Details:
Molded case circuit breaker
Frame:
G
Product Subgroup:
Circuit Breakers

Eaton GHB1020 – Frequently Asked Questions

1) Can an Eaton GHB breaker be used on a 480Y/277V panel?
The GHB is rated 277 VAC, which is the line-to-neutral voltage of a 480Y/277 system. So single-pole GHB breakers work on 277 volt circuits, typically lighting branch circuits off a 480Y/277 panelboard. It carries a 14 kAIC interrupting rating at 277 VAC. Do not treat it as a full 480 VAC device: the AC rating on record is 277 VAC, so two- and three-pole line-to-line applications at 480 volts are outside what the breaker is rated for. It is also rated 125 VDC and runs at 50/60 Hz.
2) What amperage ratings and pole counts does the Eaton GHB Series C come in?
Three pole configurations, each with its own amp range. Single-pole: 15, 20, 25, 30, 40, 45, 60, 70, 80, 90 and 100 amps. Two-pole: 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80 and 100 amps. Three-pole: 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90 and 100 amps. Note the ranges are not identical, 35 and 50 amps are offered in two- and three-pole but not single-pole, and 90 amps is single- and three-pole only. Part numbers follow the pattern: GHB, then the pole count digit, then the amperage, so a three-pole 60 amp is GHB3060.
3) Can the trip setting on an Eaton GHB breaker be adjusted in the field?
No. The GHB uses fixed thermal and fixed magnetic trip, so both the overload and the instantaneous trip points are set at the factory and there is no dial or adjustment. If you need a different trip point you order a different amperage rating rather than adjusting the breaker. That is why the amp rating has to be right at the order stage: sizing is decided by the part number you pick, not by setting the breaker after it is installed.
4) I need to replace a failed breaker in a 277 volt lighting panel. What do I order to match?
Read three things off the face of the old breaker: the catalog number, the pole count and the amp rating. On a GHB the catalog number encodes the last two, GHB plus the pole digit plus the amperage. GHB1020 is single-pole 20 amp, GHB2030 is two-pole 30 amp, GHB3100 is three-pole 100 amp. Match the number exactly and the replacement drops into the same G frame position with the same 277 VAC, 14 kAIC and fixed thermal magnetic trip characteristics. Do not substitute a higher amp rating to stop nuisance tripping, the conductor size sets the maximum breaker size.
5) Is the GHB a bolt-on panel breaker or does it need an enclosure?
The GHB is supplied as a complete breaker in a G-frame molded case, meaning the breaker itself is the finished assembly rather than a trip unit or a replacement element that goes into a separate frame. It goes into a panelboard, switchboard, control panel or enclosure that accepts the G frame; the mounting hardware and enclosure are separate items, not part of the breaker.
6) Does the Eaton GHB breaker work on DC circuits?
Yes, the GHB carries a 125 VDC rating alongside its 277 VAC rating, so it can protect DC circuits such as control power, battery and UPS distribution up to 125 volts DC. The 14 kAIC interrupting rating that is published applies at 277 VAC. On DC, pole count matters for how the breaker is applied, and the same GHB catalog numbers cover single-, two- and three-pole builds.
7) Is the Eaton GHB breaker approved for federal and government facility work?
Two things a specifier looks for are on record here: the GHB is UL Listed, and it complies with Federal Specifications Classification W-C375B. That combination is what typically gets a molded case breaker accepted on government, institutional and military-adjacent projects where the submittal has to reference a federal specification rather than just a manufacturer datasheet.
8) Is Eaton GHB the same as Cutler-Hammer GHB?
Same breaker. GHB is the Cutler-Hammer catalog designation that carried over to Eaton after Eaton acquired the Cutler-Hammer line, and the Series C designation identifies the current generation of the design. A panel schedule or existing breaker marked Cutler-Hammer GHB1020 is matched by ordering GHB1020 from Eaton: the catalog number, pole count and amp rating are what identify the part.
9) How deep is the Eaton GHB breaker in the panel?
The published length/depth on the GHB is 2.63 inches. That is the figure to check against the gutter space and cover clearance in the enclosure or panel you are fitting it into, particularly on retrofits into an existing can where the wiring space behind the deadfront is already tight.
10) Can I use the GHB on both 50 Hz and 60 Hz systems?
Yes. The GHB is rated 50/60 Hz, so the same catalog number applies whether the facility runs on 60 Hz North American power or 50 Hz supply. That matters for OEM control panels and equipment built here and shipped abroad, since it avoids a separate breaker part number for the export build.
How fast can I get the Eaton GHB1020 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton GHB1020 come with a warranty?
Absolutely. The Eaton GHB1020 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton GHB1020?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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