Eaton HMCP003A0 - 3 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Eaton HMCP003A0 — a compact 3 A, 600 V, 3‑pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short‑circuit protection in panelboards and load centers.

Its compact molded case design optimizes panel space, freeing room for additional circuits without sacrificing safety or performance. The thermal‑magnetic trip unit delivers stable, repeatable protection: the thermal element handles sustained overloads, while the magnetic element provides a fast response during short circuits, reducing the risk of equipment damage and downtime.

Built for straightforward compatibility, the HMCP003A0 is designed to work with matching Eaton OEM load centers and panelboards, making replacement and system upgrades smoother for technicians and contractors alike.

Ideal for residential, commercial, and light industrial applications, this 3‑pole breaker is suited for three‑phase distribution and multi‑wire circuits where 3 A at up to 600 V protection is required. Use it in panelboards that demand reliable, space‑efficient protection for sensitive loads and small equipment circuits.

Key advantages

• Compact molded case design: Maximizes panel space and simplifies installation.
• Thermal‑magnetic trip unit: Delivers stable overload protection with fast short‑circuit response.
• 3‑pole configuration: Suitable for three‑phase circuits and multi‑wire panels.
• 600 V rating: Supports equipment and distribution circuits common in commercial and light industrial settings.
• 3 A rating: Provides precise protection for sensitive control loads and small equipment.
• OEM compatibility: Designed to work with matching Eaton load centers and panelboards for reliable integration.

Specifications

• Manufacturer: Eaton
• Part Number: HMCP003A0
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 3 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short‑circuit protection

Applications and use cases

• Panelboards and load centers in commercial facilities and light industrial environments
• Three‑phase distribution or multi‑wire circuits requiring 3 A protection at up to 600 V
• Replacement or upgrade for compatible Eaton OEM breakers within supported panel assemblies
• Control panels and equipment enclosures where compact, reliable protection is essential

Practical tips for best results

• Verify that the HMCP003A0 matches your panelboard’s OEM specification and form factor before installation.
• Ensure proper alignment and secure mounting within the panel enclosure to maintain reliable trip performance.
• Label circuits clearly and perform a functional test after installation to confirm correct operation.
• Follow general electrical safety practices and applicable codes when servicing or replacing breakers in existing panels.