Eaton CH320ST - 20 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Eaton CH320ST is a 20A, 240V, 3-pole plug-in molded-case circuit breaker designed to shield panelboards and load centers from overcurrent and short circuits. Its fast plug-in connection makes installation and future replacements quick and straightforward, minimizing downtime on service upgrades or expansions.

• Fast plug-in installation: Simplifies wiring upgrades and circuit changes, reducing field installation time and labor.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection performance, ensuring predictable behavior under varying load and fault conditions.
• OEM-compatible design: Engineered to pair with matching Eaton OEM load centers and panelboards for proper fit, coordination, and long-term reliability.
• Versatile applications: Ideal for residential, commercial, and light industrial environments where reliable 240V branch circuit protection is essential.
• Three-pole, 240V configuration: Provides comprehensive protection for multi-wire or 3-phase panelboard layouts, maintaining safe operation across the system.
• Key specs at a glance: Type — Thermal-magnetic molded case; Amperage — 20A; Voltage — 240V; Poles — 3; Mounting — Plug-in; Part Number — CH320ST.

Use cases and scenarios

• Upgrading existing panelboards or load centers in homes, offices, or light industrial facilities that require reliable 3-pole protection on 240V circuits.
• Installing new 3-phase or multi-wire circuits where fast replacement and consistent trip characteristics are important for safety and uptime.
• Expanding electrical service in commercial spaces where OEM compatibility ensures seamless integration with existing Eaton equipment.

Why choose the CH320ST? It combines a robust thermal-magnetic protection approach with a streamlined plug-in format, delivering dependable safety without complicating installation. By selecting a breaker that matches your OEM panelboard, you ensure proper trip coordination, easier maintenance, and long-term reliability across residential, commercial, and light industrial applications.

Product details at a glance

• Manufacturer: Eaton
• Part Number: CH320ST
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection