Eaton HMCPS003A0Y - 3 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Eaton HMCPS003A0Y—a compact 3 A, 600 V, 3-pole molded-case circuit breaker designed to protect branch circuits in panelboards and load centers. Built for reliable overcurrent and short-circuit protection, this unit helps keep electrical systems safe and compliant across residential, commercial, and light industrial environments.

• Compact molded-case design maximizes panel space without sacrificing performance, making it ideal for crowded or retrofit installations.
• Thermal-magnetic trip unit delivers stable, repeatable protection across temperature variations, with fast response to short circuits and controlled operation for steady long-term reliability.
• 3-pole configuration provides true common-trip across all three lines, simplifying protection for three-phase systems and reducing risk during fault conditions.
• OEM-compatible engineered to pair with matching Eaton OEM load centers and panelboards for straightforward installation, labeling, and warranty alignment.
• Versatile applications well-suited for residential, commercial, and light industrial circuits requiring dependable branch circuit protection.

Technical snapshot: Type — Thermal-magnetic molded case; Amperage Rating — 3 A; Voltage Rating — 600 V; Poles — 3; Manufacturer — Eaton; Part Number — HMCPS003A0Y. These specifications translate to precise protection for wiring, devices, and downstream equipment in your distribution system.

Practical use cases include upgrading a panelboard to accommodate a dedicated three-phase load, replacing a failing breaker in a service panel, or provisioning a compact, reliable protective device for small commercial equipment racks. The 3-pole design ensures synchronized disconnection, which is critical for maintaining balance and safety in three-phase layouts.

If you’re evaluating protection options, choose this Eaton breaker for its combination of space efficiency, dependable thermal-magnetic trip performance, and seamless compatibility with Eaton panel ecosystems. It’s a thoughtful, long-term solution for safeguarding circuits while preserving easy serviceability and consistent operation across your electrical infrastructure.