Eaton HMCP100K3C - 100 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Eaton HMCP100K3C — a 100A, 600V, 3‑pole molded case circuit breaker engineered to deliver dependable branch circuit protection in panelboards and loadcenters. This is the compact, reliable solution electricians rely on for safe, consistent electrical distribution in a range of settings.

The thermal-magnetic trip unit provides stable, repeatable protection against both overloads and short circuits. By combining thermal sensing with magnetic instantaneous tripping, it minimizes nuisance trips while delivering fast, predictable response during fault conditions. That means fewer service interruptions and more confident protection for people and equipment.

Designed with space in mind, the molded case construction delivers a compact footprint without compromising performance. Its streamlined profile makes it easier to fit into crowded panel spaces in both new builds and renovations, helping you maximize usable enclosure capacity.

Compatibility is a core strength. The HMCP100K3C is specifically designed to be compatible with matching OEM loadcenters and panelboards, ensuring a smooth, hassle-free installation and optimal coordination within Eaton’s or OEM ecosystems. This makes it an ideal replacement or upgrade option in panels that require a trusted, factory-tested fit.

Ideal for residential, commercial, and light industrial applications, this 3‑pole breaker protects multiple circuit branches with a single, robust device. Use cases include main and branch circuit protection in service panels, distribution panels, and other panelboard configurations where reliability and space efficiency are paramount.

Key features and benefits

• 100 A amperage rating for main or branch protection in large subpanels and service equipment
• 600 V voltage rating suitable for typical commercial and industrial distribution environments
• 3-pole design for three-phase or multi-branch configurations
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying loads and temperatures
• Compact molded case design optimizes panel space and reduces enclosure footprint
• OEM panelboard compatibility for reliable, drop‑in replacement and coordinated protection
• Suitable for residential, commercial, and light industrial electrical systems

Technical snapshot

• Manufacturer: Eaton
• Part Number: HMCP100K3C
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

For professionals building or upgrading electrical systems, the Eaton HMCP100K3C combines precise protection, compact design, and OEM‑based compatibility to deliver a dependable, long‑term solution. Whether you’re stocking a contractor’s van, outfitting a commercial panel, or upgrading a residential service, this 3‑pole molded case breaker is engineered to perform when it matters most.