{"product_id":"square-d-pbq3640graw-fusible-bus-plug","title":"Square D | PBQ3640GRAW | Fusible Bus Plug | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eDiscover the Square D PBQ3640GRAW Fusible Bus Plug — a purpose-built solution for maintenance, retrofit, and replacement in demanding 600V electrical environments. With a sturdy 400A capacity and a 3-pole configuration, this bus plug is designed to integrate seamlessly into compatible Square D switchgear, delivering reliable protection where you need it most.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 400 A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 600 V\u003c\/li\u003e \u003cli\u003ePart number: PBQ3640GRAW\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this fusible bus plug stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDirect-fit for maintenance and retrofit projects, reducing downtime and simplifying system upgrades in 600V networks.\u003c\/li\u003e \u003cli\u003eRobust 400A capacity for high-demand distribution paths, ensuring consistent protection under typical load conditions.\u003c\/li\u003e \u003cli\u003e3-pole design provides balanced protection across three phases, helping maintain electrical balance and system reliability.\u003c\/li\u003e \u003cli\u003ePart-by-part compatibility reference: using the PBQ3640GRAW ensures alignment with matching Square D equipment, streamlining ordering and installation.\u003c\/li\u003e \u003cli\u003eDurable construction designed for long service life in industrial environments, with attention to compatibility and safe, reliable operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance on existing Square D switchgear that requires fusible bus plugs for quick, safe reconfiguration.\u003c\/li\u003e \u003cli\u003eRetrofit projects where upgrading to a higher-current, three-pole fusible bus is needed to meet new load demands.\u003c\/li\u003e \u003cli\u003eReplacement for worn or damaged fusible bus plugs in 600V distribution systems, helping restore performance with minimal disruption.\u003c\/li\u003e \u003cli\u003eNew installations within 600V systems where a reliable, factory-matched fusible bus plug is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFit, compatibility, and purchasing tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings against your equipment’s manual. The PBQ3640GRAW part number is the most reliable reference for compatibility with matching Square D gear, so use it as your primary cross-check when sourcing replacements or upgrades. If you’re aligning with specific panels or switchgear catalogs, compare exact model numbers to ensure a seamless match.\u003c\/p\u003e \u003ch3\u003ePractical guidance for installation and care\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEngage qualified electrical professionals to perform installation and maintenance in accordance with manufacturer guidelines and safety standards.\u003c\/li\u003e \u003cli\u003eStore and handle fusible bus plugs as designed to prevent contamination or damage to contacts and mating surfaces.\u003c\/li\u003e \u003cli\u003ePeriodically verify connections and insulation integrity in service environments to maximize longevity and safe operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for reliability in critical power distribution, the Square D PBQ3640GRAW Fusible Bus Plug delivers precise compatibility, solid protection, and a clear path to streamlined maintenance and upgrades in 600V, 400A applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425755353250,"sku":"PBQ3640GRAW","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-pbq3640graw-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}