Eaton HFD3100K - 100 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton HFD3100K is a 100 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection for panelboards and load centers. Built for three-phase systems, it provides precise overcurrent protection and fast short-circuit response, helping safeguard wiring and connected equipment.

• Secure bolt-on mounting: ensures a rigid, vibration-resistant bus connection that remains dependable in challenging environments.
• Thermal-magnetic trip unit: combines thermal overload protection with instantaneous magnetic trips for stable, repeatable performance across varying loads.
• OEM-ready compatibility: designed to match matching OEM load centers and panelboards, simplifying replacement and inventory management.
• Versatile application: suitable for residential, commercial, and light industrial electrical distribution.

Technical snapshot

• Manufacturer: Eaton
• Part number: HFD3100K
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal uses and scenarios

Perfect for upgrading or installing three-phase panels in small to mid-size commercial spaces and light industrial facilities. The HFD3100K protects motors, pumps, conveyors, and other three-phase equipment, ensuring reliable protection where vibration or movement is a concern. Its three-pole design is ideal for three-phase feeders and distribution circuits, while its bolt-on mounting provides a robust connection in panels that require durable, long-term performance.

Why this Eaton breaker stands out

Unlike generic breakers, the HFD3100K emphasizes a durable mechanical connection and precise protection characteristics tailored for OEM panel compatibility. The combination of bolt-on mounting and a thermal-magnetic trip ensures both mechanical reliability and dependable protection—so you experience consistent trip behavior, reduced nuisance trips, and easier maintenance in your distribution system.

When planning installations or upgrades, consider how this breaker’s 3-pole, 100 A, 600 V rating aligns with your panelboard specifications and three-phase load requirements. Always follow local electrical codes and manufacturer guidelines to ensure a safe, compliant setup.