Eaton / Cutler-Hammer HFD3050 Molded Case Circuit Breaker

No. This is a molded case commercial F-frame breaker designed for Series C panelboards, motor control centers, and switchboards. It features a bolt-on mounting style and is not compatible with standard plug-on residential panels.

The HFD models feature a high interrupting capacity designed for electrical systems with higher available fault currents. The HFD3050 provides up to 65,000 amps of interrupting capacity at 480VAC, whereas the standard FD model is built for lower fault current applications. Both utilize the exact same physical footprint.

Yes. Eaton acquired Cutler-Hammer and continues to manufacture this Series C breaker under the Eaton brand. The physical footprint, bolt-on mounting hardware, and thermal magnetic trip characteristics are exactly the same.

No. The thermal magnetic trip unit features fixed Long Time and fixed Instantaneous protection. The trip curve parameters are set at the factory and cannot be modified in the field.

If you need replacement mechanical line and load lugs, Eaton catalog number 3T100FB is the standard multi-wire pressure terminal kit for F-frame breakers up to 100 amps.

Yes. Standard Eaton Series C F-frame molded case circuit breakers are suitable for reverse feed applications. The fixed thermal magnetic trip unit will operate correctly regardless of which side the line voltage is applied.

Both are Series C F-frame breakers and share identical physical dimensions and mounting. However, the HFD series has a lower interrupting capacity than the extra high interrupting FDC series. You must verify that your system fault current does not exceed the HFD rating before making this substitution.