Eaton / Cutler-Hammer HFDE322532 Molded Case Circuit Breaker

This breaker is designed for use in Eaton Pow-R-Line C panelboards, Series C panelboards, switchboards, and motor control centers. It fits standard F-frame mounting spaces, though you should verify your specific chassis hardware requirements before installation.

Yes, as part of the Series C F-Frame family, it shares the same physical footprint as thermal-magnetic FD and HFD breakers. This allows it to fit into existing spaces when upgrading to an electronic trip unit or higher interrupting capacity.

This specific configuration is supplied with load side lugs only. The line side is designed to bolt directly to the bus in compatible Eaton panelboards and switchboards.

Yes, the factory-installed load lugs are dual-rated for both copper and aluminum conductors ranging from 4 AWG to 4/0 AWG. Ensure you apply a suitable oxide inhibitor when terminating aluminum wire to prevent corrosion and overheating.

The LSI (Long-Time, Short-Time, Instantaneous) electronic trip unit allows you to fine-tune the overload and short-circuit protection settings. This enables precise coordination with downstream breakers in your system and helps meet specific load requirements.

Unlike traditional thermal-magnetic breakers, the solid state Digitrip unit provides highly accurate, repeatable trip curves that are not affected by ambient temperature variations. This makes it ideal for environments with fluctuating temperatures or where precise coordination is required.

The electronic trip unit features adjustable dials on the face of the breaker that can be set using a standard small flathead screwdriver. Always ensure adjustments are made by a qualified electrician according to an engineered coordination study to prevent nuisance tripping or equipment damage.