{"product_id":"square-d-qo370-70a-3p-circuit-breaker","title":"Square D QO370 70A 3P Circuit Breaker, QO, Plug-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QO370 70A 3P Circuit Breaker is a dependable choice for protecting your electrical distribution setup—from panelboards to load centers. Designed in the proven QO family with plug-on mounting, this 3-pole breaker delivers secure,快速 installation and reliable interruption when faults occur, keeping your system safer and more resilient.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 70 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e QO plug-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QO370\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this QO370 breaks the mold for panel protection\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-On reliability:\u003c\/strong\u003e The plug-on design ensures fast, secure installation with consistent contact pressure, reducing installation time and potential loose connections.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection for multi‑phase systems:\u003c\/strong\u003e Ideal for 3‑pole configurations in electrical distribution, helping maintain balanced protection across circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConsistent compatibility for retrofits:\u003c\/strong\u003e Retain the same part number during maintenance or upgrades, simplifying inventory and planning for retrofit projects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDedicated support for fit checks:\u003c\/strong\u003e AmpState can help confirm compatibility if you’re aligning this breaker with your existing panel or load center.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects where a reliable 70 A, 3-pole QO plug-on breaker is required to upgrade or replace outdated protection devices.\u003c\/li\u003e \u003cli\u003eElectrical distribution upgrades in commercial or industrial environments where panelboards and load centers rely on a robust QO-type solution.\u003c\/li\u003e \u003cli\u003eMaintenance planning that benefits from a readily available, standard part number to minimize downtime and ordering complexity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat you get\u003c\/strong\u003e: one Square D QO370 circuit breaker, ready to install in compatible QO panelboards or load centers. If you’re unsure about fit, send a message—AmpState is ready to help verify compatibility and ensure you get the exact match for your system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410844536994,"sku":"QO370","price":418.0,"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-qo370-70a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}