Eaton Cutler-Hammer CH320 20A 3P 240V Circuit Breaker, Plug-On | AmpState

Meet the Eaton Cutler-Hammer CH320 20A 3P 240V Circuit Breaker — a plug-on protection solution designed for reliable circuit safeguarding in panelboards, load centers, and electrical distribution systems. Built to match the original BOM, this CH320 keeps replacements exact and maintenance smooth, minimizing downtime and rework on critical electrical infrastructure.

• Amperage: 20 A
• Poles: 3 (three-pole) for 3-phase 240V circuits
• Voltage rating: 240V
• Mounting: Plug-On design for quick, secure installation on compatible bus systems
• Part Number: CH320
• Manufacturer: Eaton Cutler-Hammer
• Application: ideal for panelboards, load centers, and electrical distribution networks
• Best for replacement projects and stocking spares to keep your BOM aligned to the original part number

Why choose the CH320 in your electrical setup? It delivers a precise, OEM-aligned solution that preserves the original engineering intent of your panel. By using the exact CH320 part, you maintain consistent protection characteristics across your 3-phase 240V circuits, reducing the risk of incompatibilities during service events and simplifying inventory management for ongoing maintenance.

Ideal use cases include upgrading aging panelboards, performing field replacements in commercial or industrial environments, and stocking a reliable spare that matches the original equipment specification. This is especially valuable when your project requires strict BOM fidelity and rapid turnaround to minimize downtime on critical electrical systems.

AmpState makes it easy to source this component with confidence. Available now, the CH320 ships with the assurance that it will fit your Eaton Cutler-Hammer-based distribution framework. If you need help confirming compatibility with your specific panel model, send a message and our team will assist in verifying fit and ensuring a seamless replacement process.