{"product_id":"eaton-cutler-hammer-ch390-90a-3p-circuit-breaker","title":"Eaton Cutler-Hammer CH390 90A 3P Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton Cutler-Hammer CH390\u003c\/strong\u003e 90A, 3-Pole Circuit Breaker\u003c\/p\u003e\n\u003cp\u003eBuilt 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.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e90 A, 3-Pole design\u003c\/strong\u003e provides solid protection for three-phase circuits, promoting balanced performance across all live conductors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number CH390\u003c\/strong\u003e ensures a precise, known fit in installations that specify this exact model, reducing compatibility uncertainty during upgrades or repairs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile installation\u003c\/strong\u003e suitable for panelboards, load centers, and electrical distribution networks—ideal for both new builds and retrofit work.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance-friendly\u003c\/strong\u003e simplifies inventory and replacement planning, so scheduled service can proceed with minimal downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmpState availability\u003c\/strong\u003e means you can confidently source and stock this unit; if you’re unsure about compatibility, \u003cem\u003emessage us\u003c\/em\u003e and we’ll help you confirm the right fit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis 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.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eUse cases\u003c\/strong\u003e: 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.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWhy it matters\u003c\/strong\u003e: maintaining a single, familiar part number reduces procurement errors, accelerates job timelines, and protects the integrity of your electrical distribution system.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIf 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.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410867671202,"sku":"CH390","price":10.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/eaton-cutler-hammer-ch390-90a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}