Eaton HMCPS150U4 - 150 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton HMCPS150U4 is a 150 A, 600 V, 3-pole molded case circuit breaker engineered to protect branch circuits with precision in panelboards and load centers. Designed for dependable overload and short-circuit protection, this compact breaker fits tight panel spaces while delivering consistent performance across residential, commercial, and light industrial environments.

Why this breaker stands out

• Compact molded-case design maximizes panel space and simplifies installation, making it ideal for streamlined electrical layouts.
• Thermal-magnetic trip unit delivers stable, repeatable protection against overloads and short circuits, reducing nuisance trips and improving reliability in day-to-day operation.
• Three-pole configuration provides balanced protection for 3‑phase systems, ensuring all conductors are safeguarded consistently.
• OEM compatibility designed to pair with matching Eaton OEM loadcenters and panelboards for a seamless, drop-in replacement or upgrade.
• High amperage and voltage ratings—150 A at 600 V—cover a broad range of branch circuits in commercial and light industrial settings, while also accommodating certain residential applications requiring 3‑pole protection.

Technical specifications

• Manufacturer: Eaton
• Part number: HMCPS150U4
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 150 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and practical use cases

• New installations and panel upgrades in commercial spaces such as offices, retail, and light industrial facilities where reliable 3‑pole protection is required.
• Panelboard retrofits and replacement projects that demand a direct, compatible Eaton solution for consistent performance with existing OEM hardware.
• Residential projects with three‑phase considerations or multi‑wire branch circuits needing robust overcurrent protection without compromising space.

Installation and best practices

When integrating the HMCPS150U4, ensure it is used within compatible Eaton panelboards or loadcenters and follow the panel manufacturer’s guidance for torque and mounting. This breaker is built to deliver dependable performance in everyday duty cycles, from busy commercial hours to occasional peak loads. For longer-term reliability, verify that the protected circuit aligns with the rated amperage and voltage, and pair with appropriate conductors and accessories recommended by Eaton.