The Eaton EHD3015 is a 3-pole molded case circuit breaker designed for robust performance in commercial and industrial electrical systems. As part of the Series C F-Frame family, it provides fixed thermal and magnetic trip protection for 15A circuits. This bolt-on breaker mounts into compatible Eaton panelboards and switchboards. It offers an interrupting rating of 14 kAIC at 480VAC and 18 kAIC at 240VAC, making it a reliable choice for standard facility power distribution needs.
Which Eaton panelboards accept the EHD3015 circuit breaker?
This Series C F-Frame breaker is typically installed in Eaton Pow-R-Line 1a, 2a, 3a, and 4 panelboards, as well as legacy Cutler-Hammer and Westinghouse switchboards built for F-Frame dimensions.
Can I use the EHD3015 to replace an old Westinghouse breaker with the exact same part number?
Yes. Eaton acquired the distribution equipment divisions of both Cutler-Hammer and Westinghouse. A newly manufactured Eaton EHD3015 is the direct, drop-in replacement for any legacy Westinghouse or Cutler-Hammer breaker sharing that catalog number.
Does this breaker include lugs on both the line and load sides?
No. Because it is a bolt-on panelboard breaker, it comes standard with load-side lugs only. The line side is designed to bolt directly to the panelboard bus assembly. For standalone wire-to-wire mounting, a line-side lug kit must be sourced separately.
Is the EHD3015 rated for continuous operation at its maximum amperage?
No, it carries a standard 80 percent continuous current rating. According to standard electrical codes, continuous loads operating for three hours or more should not exceed 12 amps, which is 80 percent of its 15-amp handle rating.
What types of systems utilize the 250VDC rating on this breaker?
The 250-volt direct current rating makes this unit suitable for ungrounded or grounded DC applications, including battery backup systems, solar photovoltaic control panels, and industrial DC motor circuits, provided the available fault current does not exceed its 10kA DC interrupting capacity.
What does the LI designation mean on the thermal-magnetic trip unit?
The LI code stands for Long-Time and Instantaneous protection. The fixed long-time thermal element protects the wiring from gradual overheating due to sustained overloads, while the fixed instantaneous magnetic element provides immediate tripping when a severe short circuit occurs.
Can I field-install internal accessories like a shunt trip in the EHD3015?
Yes. The Series C F-Frame platform supports field-installable internal accessories. Standard add-ons like shunt trips, undervoltage releases, and auxiliary switch contacts are typically mounted inside the right-hand pole cavity.
Can the handle on the EHD3015 be securely locked out for maintenance?
Yes, you can install an external handle padlock hasp, such as the Eaton PLK1 accessory, on this F-Frame breaker. This allows maintenance personnel to secure the breaker in the OFF position, ensuring compliance with standard lockout and tagout procedures.
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Customers rate this product 5.0 out of 5 based on 13 reviews.