Eaton / Cutler-Hammer EHD3070V Molded Case Circuit Breaker

The "V" suffix designates that this breaker is calibrated for a 50 degrees Celsius ambient temperature, rather than the standard 40 degrees Celsius. This specialized calibration prevents nuisance tripping in high-temperature environments like boiler rooms or foundries.

This F-frame breaker is designed for direct installation in Eaton and Cutler-Hammer Series C panelboards, switchboards, and motor control centers.

As an Eaton Series C F-frame breaker, it serves as a modern replacement for obsolete Westinghouse, Challenger, and Bryant F-frame breakers, including the FB and EHB series. Always verify that the 14kA at 480VAC interrupting capacity meets or exceeds the rating of the original breaker.

For standard Eaton Series C panelboards, this bolt-on breaker mounts directly to the chassis without extra hardware. However, if you are retrofitting it into a legacy Westinghouse CDP panelboard, a separate F-frame branch retrofit kit is required to adapt the mounting brackets and bus connectors.

Yes, this breaker is rated for 250VDC applications with a 10kA interrupting capacity, making it versatile for both standard AC distribution and specific direct current systems.

The breaker comes equipped with standard lugs that accommodate conductors ranging from 14 AWG to 1/0 AWG. It is critical to follow the manufacturer torque specifications during installation to ensure a secure connection and maintain the integrity of the 50 degrees Celsius calibration.

No, this breaker features a fixed thermal and fixed magnetic trip unit. Both the long-time overload and instantaneous short-circuit protection levels are factory set for 70 amps and cannot be adjusted in the field.

This UL Listed breaker features a patented contact design with high-speed blow-open action. This mechanism rapidly clears faults, providing superior protection for conductors and connected apparatus against severe short circuits.