{"product_id":"square-d-pbqa3640g-fusible-bus-plug","title":"Square D | PBQA3640G | Fusible Bus Plug | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D PBQA3640G Fusible Bus Plug is a purpose-built solution for serviceability and panel modernization in commercial and light industrial environments. Designed for reliable, plug-in compatibility, this 400A, 3-pole unit delivers dependable fault isolation and fast replacement when you need to maintain, retrofit, or upgrade your electrical distribution system.\u003c\/p\u003e \u003ch4\u003eKey Specifications\u003c\/h4\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Fusible bus plug for streamlined maintenance and upgrades\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e Part number PBQA3640G for compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch4\u003eWhy this fusible bus plug stands out\u003c\/h4\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong purpose-built for maintenance and retrofit\u003e: Reduce panel downtime with a plug-in solution that matches your existing Square D infrastructure and ratings.\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear, reliable compatibility\u003c\/strong\u003e: The PBQA3640G is the best reference for ensuring a precise fit and correct ratings when replacing or upgrading bus plugs in compatible Square D panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSolid three-phase performance\u003c\/strong\u003e: With 3 poles and a 600V rating, this bus plug supports balanced distribution for medium-load, three-phase applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConcrete value in a single component\u003c\/strong\u003e: Combines monitoring-friendly configuration with a robust fusible design to protect equipment and maintain power integrity during changes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch4\u003eIdeal use cases\u003c\/h4\u003e\n\u003cul\u003e \u003cli\u003eMaintenance outages where a quick, reliable bus plug replacement minimizes downtime\u003c\/li\u003e \u003cli\u003eRetrofits or panel upgrades that require maintaining existing 400A, 3‑pole, 600V specifications\u003c\/li\u003e \u003cli\u003eReplacement of worn or obsolete bus plug assemblies in Square D systems, ensuring continued compatibility and safety\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch4\u003ePractical tips for installation and selection\u003c\/h4\u003e\n\u003cul\u003e \u003cli\u003eAlways \u003cstrong\u003econfirm fit and ratings before ordering\u003c\/strong\u003e; the PBQA3640G part number is your best reference for compatibility with your specific panel.\u003c\/li\u003e \u003cli\u003eEnsure the power is fully disconnected and follow site safety procedures before any installation or replacement work.\u003c\/li\u003e \u003cli\u003eUse as part of a planned maintenance schedule to reduce unexpected outages and extend the life of your distribution equipment.\u003c\/li\u003e \u003cli\u003eConsult a qualified electrician if you’re upgrading from a different amperage or pole configuration to ensure correct wiring and protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425753518242,"sku":"PBQA3640G","price":13848.0,"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-pbqa3640g-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}