Eaton Series C EHD F-Frame Cir...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$256.26
Eaton Series C EHD F-Frame Circuit Breaker, Fixed Thermal-Magnetic Trip

Eaton Series C EHD F-Frame Circuit Breaker, Fixed Thermal-Magnetic Trip

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Model: EHD1040
$256.26

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

$256.26
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Eaton Series C EHD F-Frame Circuit Breaker, Fixed Thermal-Magnetic Trip

The Eaton Series C EHD is a complete molded case circuit breaker built on the compact F-Frame platform, engineered for dependable branch and feeder circuit protection in commercial and industrial electrical systems. This unit features a fixed thermal and fixed magnetic trip and is suitable for systems operating at 50/60 Hz. UL Listed for use in compatible panelboards and load centers, the Series C EHD delivers consistent, code-compliant overcurrent and short-circuit protection wherever a compact, complete breaker assembly is required. The Series C EHD platform is available in a range of pole and amperage configurations, including standard and line-side lug terminal options, to suit diverse distribution requirements.

Key Features

  • Frame: Compact F-Frame construction supports the Series C EHD circuit breaker platform for space-constrained panelboard applications.
  • Trip Type: Fixed thermal, fixed magnetic trip design provides consistent, non-adjustable overcurrent and short-circuit protection without field calibration.
  • Frequency Rating: Rated for 50/60 Hz electrical systems, supporting standard North American and international frequencies.
  • Construction: Molded case assembly designed for standard panelboard and load center mounting.
  • Configuration Range: Offered across single-pole, two-pole, and three-pole configurations with standard and line-side lug terminal options to match distribution requirements.

Certifications & Compliance

  • UL Listed

Technical Specifications

  • Frame: F
  • Circuit Breaker Type: EHD
  • Trip Type: Fixed Thermal-Magnetic
  • Frequency: 50/60 Hz

Typical Applications

  • Commercial and Industrial Panelboards
  • Branch and Feeder Circuit Protection
  • Load Center and Switchgear Retrofits
  • New Construction Electrical Distribution
  • Facility Upgrades Requiring UL Listed Breakers
  • Replacement Breaker for Existing Series C EHD Installations

Why Eaton?

Eaton's Series C EHD F-Frame circuit breaker delivers dependable, UL Listed overcurrent protection built for the demands of commercial and industrial electrical systems. With a fixed thermal-magnetic trip, this complete breaker is engineered for consistent, code-compliant performance that electrical professionals can rely on for new installations and breaker replacements alike. The compact F-Frame footprint and broad pole/amperage configuration range make it a practical choice for panelboard upgrades and retrofits where reliable, UL Listed protection at 50/60 Hz is essential.

Manufacturer Resources

Product Specs

Product Type:
Circuit Breaker
Series:
Series C EHD
Listing:
UL Listed
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers

Eaton EHD1040 – Frequently Asked Questions

1) What amperages does the Eaton Series C EHD F-Frame breaker come in, and which poles get which ratings?
Ampere ratings run from 10A to 90A depending on pole count. Single-pole covers 15A, 20A, 30A and 40A. Two-pole covers 15A, 20A, 30A, 40A, 50A and 70A. Three-pole covers 10A, 20A, 25A, 30A, 40A, 60A, 80A and 90A. So if you need 60A or above, you are in a three-pole EHD; the 70A two-pole is the top of the two-pole range.
2) What is the difference between EHD standard terminals and the L line-side lug version?
The L suffix on an EHD part number is the line-side lug terminal option, supplied with lugs on the line end rather than the standard terminal arrangement. Example pairs: EHD1040 standard versus EHD1040L line-side lug, both 15A... both single-pole 40A. Pick standard when the breaker lands on panelboard bus or a factory connector, and the L version when you are terminating incoming cable directly at the breaker. Not every amperage is offered both ways, so match the exact number: 30A single-pole is offered as EHD1030L, and 50A two-pole as EHD2050L.
3) Can I adjust the trip setting on an Eaton EHD breaker?
No. The EHD uses a fixed thermal and fixed magnetic trip, so neither the overload nor the instantaneous element is field adjustable and there is nothing to calibrate on site. You select protection by choosing the ampere rating of the breaker itself. If your coordination study calls for an adjustable instantaneous or an electronic trip unit, the EHD is the wrong device for that duty.
4) I need to replace a failed EHD breaker in an existing panelboard. How do I order the right one?
Match three things off the label of the breaker you are pulling: pole count, ampere rating, and terminal type. The EHD part number spells all of it out. The first digit after EHD is the number of poles, the following digits are the amperes, and a trailing L means line-side lug. EHD3060 is a three-pole 60A with standard terminals; EHD3040L is a three-pole 40A with line-side lugs. Replace like for like and the breaker drops back into the same F-Frame space.
5) Will an Eaton EHD work on a 50 Hz system for export or an overseas facility?
Yes. The Series C EHD is rated for 50/60 Hz, so it suits both North American 60 Hz distribution and 50 Hz systems on export-built equipment or international facilities.
6) Is the Eaton Series C EHD a UL Listed breaker for a permitted commercial job?
The Series C EHD is UL Listed for use in compatible panelboards and load centers, which is what an inspector looks for on commercial and industrial overcurrent protection. That is the certification carried on this breaker; no other listing is claimed for it.
7) Is the EHD a complete breaker or does it need a separate trip unit ordered?
It ships as a complete molded case breaker. The thermal-magnetic trip is built in and fixed, so there is no separate trip unit, rating plug, or accessory required to make it functional. Anything beyond the breaker itself is a mounting or accessory decision driven by your panelboard, not a missing piece of the device.
8) Can I use a two-pole EHD for a 240V single-phase load and a three-pole for three-phase?
That is the normal usage pattern. Single-pole EHD breakers protect one ungrounded conductor, two-pole units break both legs of a single-phase line-to-line circuit, and three-pole units break all three phases of a three-phase feeder or branch circuit. All three configurations exist in the EHD range, so you can standardize a panel on one breaker type across mixed loads: EHD2020 for a two-pole 20A, EHD3020 for a three-pole 20A.
9) Why choose an F-Frame EHD instead of a larger frame breaker for a feeder up to 90A?
The F-Frame is the compact platform in this class, which is the reason to use an EHD where panelboard space is tight. Up through 90A three-pole the EHD covers the range in that small footprint, so you keep space in the enclosure for other circuits. Once your feeder demand goes past what the EHD range covers, you move up to a larger frame breaker rather than paralleling EHDs.
How fast can I get the Eaton EHD1040 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 EHD1040 come with a warranty?
Absolutely. The Eaton EHD1040 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 EHD1040?
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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