{"product_id":"eaton-cutler-hammer-qc3040h-40a-3p-240v-circuit-breaker","title":"Eaton Cutler-Hammer QC3040H 40A 3P 240V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton Cutler-Hammer QC3040H\u003c\/strong\u003e is a dependable \u003cstrong\u003e40 A, 3-pole, 240 V circuit breaker\u003c\/strong\u003e designed to shield panelboards, load centers, and electrical distribution networks from overloads and short circuits. Built to fit into Eaton’s QC lineup, this breaker is a trusted choice for both new installations and retrofit projects where keeping the exact part number matters for compatibility and service continuity.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact spec alignment for 3-phase systems\u003c\/strong\u003e — 3-pole design handles multi-wire loads; 240V operation suits common commercial and industrial configurations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart-number consistency\u003c\/strong\u003e — QC3040H labeling and footprint mean fewer compatibility questions during maintenance or retrofits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit-ready\u003c\/strong\u003e — ideal when updating or stocking spare parts across multiple panels without changing other components.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmpState availability\u003c\/strong\u003e — sourced from AmpState, ensuring reliable supply for maintenance cycles and projects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupports reliable protection\u003c\/strong\u003e for equipment like motors, conveyors, HVAC controls, and other 3‑phase loads.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits\u003c\/h3\u003e\n\u003cp\u003eElectrical contractors, facilities managers, and maintenance teams working with legacy Eaton Cutler-Hammer panels benefit from having a QC3040H on hand to minimize downtime and keep service labeling consistent.\u003c\/p\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit older panelboards that previously used the QC line — maintaining exact part numbers simplifies ordering and documentation.\u003c\/li\u003e \u003cli\u003eProtect three-phase machinery and HVAC equipment running on 240V with a dedicated 40A safety margin.\u003c\/li\u003e \u003cli\u003eStock for planned maintenance: quick swaps keep electrical distribution running smoothly during service windows.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility \u0026amp; how we help\u003c\/h3\u003e\n\u003cp\u003eNeed to confirm fit? Message us and we’ll help verify compatibility with your Eaton panel or distribution setup. AmpState can assist in locating the correct QC3040H replacement or cross-reference within the QC series.\u003c\/p\u003e \u003ch4\u003eSpecifications at a glance\u003c\/h4\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QC3040H\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton Cutler-Hammer\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eStocked by AmpState, the QC3040H is ready for order when you need dependable three‑phase protection with consistent part‑numbering across projects. Order the QC3040H today and keep your Eaton panel system protected with a trusted, compatible replacement part.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410975051938,"sku":"QC3040H","price":370.0,"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-qc3040h-40a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}