Eaton / Cutler-Hammer HFD3020V Molded Case Circuit Breaker

The V suffix indicates that the breaker is calibrated for a 50 degrees Celsius (122 degrees Fahrenheit) ambient temperature, rather than the standard 40 degrees Celsius. This is often required for marine, naval, or high ambient industrial applications.

This F-Frame breaker is designed for use in Eaton Series C panelboards, switchboards, and motor control centers. It requires a bolt-on connection and is not compatible with standard plug-on residential load centers.

No, the HFD3020V features a fixed thermal and fixed magnetic trip unit. Neither the long-time overload nor the instantaneous short-circuit trip settings can be adjusted in the field.

Yes, the standard factory-installed lugs accept 14 AWG to 1/0 AWG wire and are dual-rated for both copper and aluminum conductors. Apply the manufacturer recommended torque during installation to ensure a secure connection.

Yes, Eaton acquired the Cutler-Hammer and Westinghouse distribution equipment lines. The Eaton HFD3020V is a direct replacement for older Cutler-Hammer or Westinghouse breakers with the exact same catalog number.

The HFD3020V is built on the Eaton Series C F-Frame. It shares the same physical dimensions and mounting footprint as other F-Frame breakers, such as the standard FD, FDC, and ED models.

Molded case circuit breakers in the Eaton Series C family can typically be mounted vertically or horizontally without affecting their tripping characteristics. Always consult the specific panelboard labeling to ensure compliance with local electrical codes.

Installation should only be performed by a qualified electrician. Always de-energize the panelboard or switchboard, verify power is off using a properly rated voltage tester, and follow all lockout and tagout procedures before installing or servicing the breaker.

The interrupting capacity of a circuit breaker depends on the system voltage. The HFD3020V can safely clear a 100kA fault at 240VAC, but its capacity decreases to 65kA at 480VAC and 25kA at 600VAC. Always verify the available fault current at your specific installation point.