Eaton HKD3100X - 100 A, 600 V, 3-Pole Circuit Breaker | AmpState

Engineered for dependable branch circuit protection, the Eaton HKD3100X is a 100 A, 600 V, 3-pole molded case circuit breaker designed to slot into panelboards and load centers. It delivers precise overcurrent and short-circuit protection, while saving valuable panel space with its compact molded-case design.

The built-in thermal-magnetic trip unit provides stable, repeatable protection—responding quickly to short circuits while minimizing nuisance trips during normal load fluctuations. This translates to safer equipment, reduced downtime, and long-term reliability for your electrical distribution system.

• Compact molded-case design frees up valuable panel space, helping you fit more circuits in tight enclosures without sacrificing protection.
• Three-pole configuration is ideal for protecting three-phase circuits and associated downstream devices within commercial and light-industrial panels.
• Thermal-magnetic trip delivers dependable overcurrent and short-circuit protection with consistent coordination across circuits.
• Plug-and-play compatibility with matching Eaton OEM load centers and panelboards, ensuring straightforward replacement and uniform trip characteristics.
• 100 A, 600 V rating supports typical branch circuits in residential, commercial, and light-industrial environments.

Technical specifications at a glance

• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Voltage rating: 600 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits from the HKD3100X? Electrical professionals and panel designers seeking dense, reliable protection for three-phase systems in residential-adjacent commercial spaces, retail environments, office networks, and light manufacturing. It’s especially valuable when you need to maximize panel capacity without compromising safety or protection performance.

Why choose this model over alternatives? The HKD3100X combines Eaton’s trusted protection architecture with a compact footprint, enabling efficient panel layouts, improved heat management, and consistent breaker behavior across multiple circuits. It’s a practical, long-term solution for panels that demand both space efficiency and dependable protection.

Straightforward use cases:

• Installing in new or existing panelboards where space is at a premium and three-phase protection is required.
• Upgrading subpanels in commercial spaces to ensure coordinated protection across downstream circuits.
• Replacing aging breakers in light industrial panels to restore reliable overcurrent and short-circuit protection.

Practical tips for installation and operation:

• Confirm that your panelboard is compatible with the HKD3100X 3-pole, 100 A, 600 V configuration before installation.
• Plan the layout to take advantage of the compact design, optimizing spacing for cooling and wiring convenience.
• Replace in existing Eaton panels with matching OEM compatibility to ensure consistent trip characteristics and reliable performance.