{"product_id":"square-d-pbq4640gra-fusible-bus-plug","title":"Square D | PBQ4640GRA | Fusible Bus Plug | 400A | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered by Square D, the PBQ4640GRA Fusible Bus Plug delivers precise, reliable protection in a compact, field-ready package. Rated for 400A at 600V, this bus plug is designed for maintenance, retrofit, and replacement projects where exact specs and dependable performance matter most.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Fusible Bus Plug\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e PBQ4640GRA\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this fusible bus plug stands out\u003c\/h3\u003e\n\u003cp\u003eThis part provides the specific rating and form factor required for compatibility with Square D equipment. Using the exact part number PBQ4640GRA helps ensure a secure fit, reliable electrical contact, and consistent protective performance, reducing the risk of mismatched components during maintenance or retrofits.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Quick, swap-in protection when a bus plug reaches the end of life or shows signs of wear.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit:\u003c\/strong\u003e Modernize existing panels with fusible protection while preserving the established wiring layout.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement:\u003c\/strong\u003e Keep a ready-to-install part on hand for faster field repairs and minimized downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and ordering notes\u003c\/h3\u003e\n\u003cp\u003eConfirm fit and ratings before ordering. The PBQ4640GRA part number is the best reference for compatibility with your Square D equipment, ensuring a correct match for safe, reliable operation.\u003c\/p\u003e \u003ch3\u003eWho should consider this part\u003c\/h3\u003e\n\u003cp\u003eElectrical maintenance teams, facility managers, and service technicians working with Square D distribution gear that requires fusible protection at up to 600V and 400A will find the PBQ4640GRA essential for dependable performance and streamlined servicing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425753911458,"sku":"PBQ4640GRA","price":11438.0,"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-pbq4640gra-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}