Eaton Cutler-Hammer CH390 90A 3P Circuit Breaker | AmpState

Eaton Cutler-Hammer CH390 90A, 3-Pole Circuit Breaker

Built for everyday electrical work, the CH390 delivers reliable circuit protection in panelboards, load centers, and broader electrical distribution. This model is particularly valuable for retrofit projects and maintenance planning where the part number needs to stay consistent, helping you keep inventories, drawings, and service plans aligned.

• 90 A, 3-Pole design provides solid protection for three-phase circuits, promoting balanced performance across all live conductors.
• Part Number CH390 ensures a precise, known fit in installations that specify this exact model, reducing compatibility uncertainty during upgrades or repairs.
• Versatile installation suitable for panelboards, load centers, and electrical distribution networks—ideal for both new builds and retrofit work.
• Maintenance-friendly simplifies inventory and replacement planning, so scheduled service can proceed with minimal downtime.
• AmpState availability means you can confidently source and stock this unit; if you’re unsure about compatibility, message us and we’ll help you confirm the right fit.

This CH390 is an excellent choice for electricians, facility managers, and contractors who require a dependable, consistent 90A three-pole breaker that stays true to its designation across multiple visits and projects.

• Use cases: retrofit upgrades to existing three-phase panels, ongoing maintenance in commercial spaces, and replacement installations where the CH390 is specified in drawings or OEM guidelines.
• Why it matters: maintaining a single, familiar part number reduces procurement errors, accelerates job timelines, and protects the integrity of your electrical distribution system.

If you need help verifying fit before purchase, the AmpState team is ready to assist. Send a message to confirm compatibility and ensure this CH390 90A 3P circuit breaker will integrate seamlessly with your panelboard or load center.