{"product_id":"square-d-pbq4640ghongs-fusible-bus-plug","title":"Square D | PBQ4640GHONGS | Fusible Bus Plug | 400A | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D PBQ4640GHONGS Fusible Bus Plug — a purpose-built solution for maintenance, retrofit, and replacement in industrial power distribution. This 400A, 600V fusible plug is designed to slot into compatible Square D bus assemblies, delivering reliable protection where uptime matters and compatibility is non-negotiable.\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 400A — robust enough to handle demanding distribution loads without unnecessary interruptions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V — suitable for typical medium-voltage bus systems found in commercial and industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFusible design:\u003c\/strong\u003e Integrated protection that isolates faults quickly to safeguard downstream equipment and maintain system integrity.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility reference:\u003c\/strong\u003e Part number PBQ4640GHONGS is the best reference for matching your equipment’s specifications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this fusible bus plug stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted for Square D systems:\u003c\/strong\u003e Built to align with Square D bus plug interfaces, ensuring a seamless fit and reliable electrical contact.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance-ready:\u003c\/strong\u003e Ideal for routine outages, component refreshes, or interim replacements during panel servicing, helping you minimize downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e retrofit-friendly:\u003c\/strong\u003e Supports updates to existing switchgear without a full panel replacement, preserving investment while upgrading protection alignment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility guidance:\u003c\/strong\u003e The exact part number PBQ4640GHONGS should be your primary reference when verifying fit, ratings, and installation requirements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing aging or failed fusible plugs in Square D switchgear during scheduled maintenance windows.\u003c\/li\u003e \u003cli\u003eRetrofit projects where you need to maintain current protection levels while upgrading components around the bus plug.\u003c\/li\u003e \u003cli\u003eEmergency swaps on 400A feeders within 600V distribution networks to restore service quickly and safely.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eHow to ensure a correct fit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMatch the amperage (400A) and voltage rating (600V) of your existing equipment.\u003c\/li\u003e \u003cli\u003eVerify that the exact part number PBQ4640GHONGS corresponds to your Square D bus plug application.\u003c\/li\u003e \u003cli\u003eConsult the equipment’s documentation or the panel manufacturer’s compatibility guide to confirm interface and mounting requirements before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the PBQ4640GHONGS Fusible Bus Plug, you gain a reliable, plug-in solution that respects your system’s protection scheme while offering practical paths for maintenance, retrofit, and replacement projects. When timing and compatibility matter, rely on Square D’s trusted design to keep your distribution running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425754042530,"sku":"PBQ4640GHONGS","price":11599.0,"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-pbq4640ghongs-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}