Eaton HMCPS100R3Y - 100 A, 600 V, 3-Pole Circuit Breaker | AmpState

Eaton HMCPS100R3Y is a 100 A, 600 V, 3-pole molded case circuit breaker designed to protect branch circuits in panelboards and load centers. Engineered for dependable overcurrent and short-circuit protection, it meets the practical needs of modern electrical installations while preserving valuable panel space.

• Compact molded case design helps maximize panel utilization and simplifies wiring runs, making it ideal for tight service environments and crowded electrical rooms.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic trip for fast response to short circuits.
• OEM compatibility is built in—this breaker is designed to be compatible with matching OEM load centers and panelboards, preserving the integrity of the original panel assembly and its listing.
• Versatile application range supports residential, commercial, and light industrial settings, protecting distribution circuits ranging from lighting and receptacles to small motor loads.
• Three-pole configuration provides a common-trip solution for three-phase systems, improving fault clearing and system safety in multi-wire installations.
• Clear part identity—model HMCPS100R3Y, 100 A, 600 V, 3-pole—ensures straightforward replacement and maintenance within AmpState’s catalog of reliable Eaton safety devices.

Technical snapshot

• Manufacturer: Eaton
• Part Number: HMCPS100R3Y
• 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

This breaker is particularly well-suited for electricians and facility managers who need reliable protection without sacrificing panel space or installation flexibility. Use it when upgrading panels, replacing aging breakers, or configuring new load centers where three-phase protection and coordinated trip behavior enhance safety and system reliability.

Why choose the Eaton HMCPS100R3Y over other breakers? Its combination of a dense, space-saving design with a robust thermal-magnetic trip mechanism translates to predictable performance in real-world conditions, fewer nuisance trips, and straightforward integration with compatible Eaton panel ecosystems. Paired with the right OEM panel, it helps maintain system integrity and simplifies future maintenance or expansion projects.

Tip for installers: verify compatibility with your specific load center, follow manufacturer installation instructions, and ensure appropriate conductor sizing and torque per the panel’s guidelines. For reliable sourcing, AmpState provides this Eaton circuit breaker as a trusted option for professional electrical work.