{"product_id":"square-d-qh330-30a-3p-240v-circuit-breaker","title":"Square D QH330 30A 3P 240V Circuit Breaker, Plug-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QH330 30A 3P 240V Plug-On Circuit Breaker\u003c\/strong\u003e from AmpState is engineered to protect your electrical distribution with precision. Designed for panelboards, load centers, and general electrical distribution, this 30 amp, 3-pole unit is the reliable choice for replacement projects and stocking spares. Keeping the original part number in your BOM is easy with the QH330.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QH330\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 30 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Plug-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Panelboards, load centers, electrical distribution\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this breaker stands out\u003c\/h2\u003e\n\u003cp\u003eThe QH330 is a plug-on design that simplifies installation by snapping directly onto compatible bus systems, reducing setup time and minimizing field wiring complexity. With a 3-pole configuration, it provides balanced protection for 3-phase 240V circuits, making it a dependable fit for commercial and industrial panels where uptime matters. This unit is specifically suited for those who need to match an original part number precisely to maintain BOM integrity and ensure seamless panel compatibility.\u003c\/p\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed 30A, 3-pole, 240V breaker in an existing Square D panelboard or load center.\u003c\/li\u003e \u003cli\u003eStocking spare units to keep service fleets aligned with the original BOM and part numbering.\u003c\/li\u003e \u003cli\u003eMaintaining or restoring electrical distribution systems where exact OEM components are required for safety and certification.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCompatibility and purchase support\u003c\/h2\u003e\n\u003cp\u003eAmpState offers the QH330 as an authentic Square D component ready for procurement. If you’re unsure about fit, \u003cstrong\u003emessage us\u003c\/strong\u003e and we’ll help you confirm compatibility and ensure you’re selecting the correct part for your panel model and year.\u003c\/p\u003e \u003ch2\u003ePractical installation tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eAlways de-energize the panel and follow lockout\/tagout procedures before replacement.\u003c\/li\u003e \u003cli\u003eVerify that the panel is listed for a 3-pole 240V breaker and that the QH series is the correct family for your enclosure.\u003c\/li\u003e \u003cli\u003eHandle the breaker with care to avoid damage to the plug-on terminals and ensure a secure, snug connection to the bus.\u003c\/li\u003e \u003cli\u003eAfter installation, test the circuit to confirm proper operation and trip characteristics under controlled conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410945691810,"sku":"QH330","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\/square-d-qh330-30a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}