Product Description
Benefits & Applications
The Eaton HFD-65K is a high-performance 3-pole, molded case circuit breaker engineered for demanding commercial and industrial power distribution systems. Part of Eaton’s proven Series C platform, this breaker delivers a 65 kA interrupting rating at 480V AC, providing superior protection against short circuits, overloads, and electrical faults. Its compact footprint, UL-listed reliability, and robust thermal-magnetic trip unit make the HFD-65K a trusted replacement in MCCs, control panels, switchboards, and machinery.
Ideal for both new installations and retrofit upgrades, the HFD-65K offers consistent performance, long mechanical life, and field-proven reliability in harsh environments. Eaton Series C breakers are widely used in commercial buildings, data centers, industrial plants, and OEM equipment.
Typical Applications
- Motor control centers (MCCs)
- Commercial and industrial power distribution
- Switchboards and panelboards
- OEM machinery and equipment protection
- Data centers, manufacturing plants, and utilities
Technical Advantages
- 65 kAIC interrupting rating @ 480V for high-fault environments
- Reliable thermal-magnetic trip unit
- Compact Series C frame for easy installation
- Field-replaceable trip unit (model dependent)
- Precision-engineered contacts for long mechanical and electrical life
- Meets UL489 standards for branch circuit protection
Compatibility Notes
The HFD-65K is part of Eaton’s FD-frame (Series C) family of molded case breakers. It is commonly used as a direct replacement for existing Eaton, Cutler-Hammer, and Westinghouse FD-series breakers that match the same:
- Frame size (FD)
- Amperage rating
- Trip configuration
- Mounting footprint
If your current breaker is labeled FD, HFD, or HFDDC and shares the same amp rating and pole configuration, the HFD-65K is often a direct-fit replacement. Always verify voltage, interrupting rating, and mounting requirements before installation.
Frequently Asked Questions
Q: What does “65K” mean in HFD-65K?
It indicates a 65,000 amp interrupting capacity (65 kAIC) at 480V AC, meaning the breaker can safely interrupt fault currents up to that level.
Q: What frame type is the HFD-65K?
It uses Eaton’s FD-frame (Series C), widely used in commercial and industrial equipment.
Q: Can the HFD-65K replace older Cutler-Hammer or Westinghouse FD breakers?
Yes. Eaton Series C FD breakers are designed to be backward compatible with older FD models of the same frame and rating. Always confirm the trip rating and voltage.
Q: Is this breaker suitable for motor protection?
Yes, the HFD-65K can be used in motor branch-circuit protection when properly sized, and is commonly found in MCC buckets and motor starters.
Q: Does the breaker support bolt-on and plug-in styles?
The availability of bolt-on or plug-in mounting depends on the exact catalog number. Check your enclosure or panel requirements before ordering.
