{"product_id":"siemens-xp421-fusible-bus-plug","title":"Siemens | XP421 | Fusible Bus Plug | 4-Pole","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens | XP421 | Fusible Bus Plug | 4-Pole\u003c\/strong\u003e is a purpose-built spare designed for Siemens switchgear, enabling maintenance, retrofit, and replacement projects where exact specifications are required.\u003c\/p\u003e\n\u003cp\u003eIdentified by part number XP421, this 4-Pole Fusible Bus Plug offers a reliable way to keep your electrical system running smoothly while matching the exact configuration your equipment expects.\u003c\/p\u003e \u003ch3\u003eKey specifications \u0026amp; compatibility\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 4-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility reference:\u003c\/strong\u003e XP421 is the best reference to ensure correct fit and ratings\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the Siemens XP421 Fusible Bus Plug\u003c\/h3\u003e\n\u003cp\u003eThis is not a generic bus plug. It’s designed to slot into Siemens equipment with the precise electrical interface and mechanical fit your system requires, reducing guesswork during maintenance and retrofit projects. The 4-pole configuration supports enhanced circuit control and interaction with higher-capacity bus assemblies.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance: Replace worn or failed fusible bus plugs on compatible Siemens gear.\u003c\/li\u003e \u003cli\u003eRetrofit: Upgrade existing installations to a 4-pole configuration where your system calls for it.\u003c\/li\u003e \u003cli\u003eReplacement planning: Maintain an inventory of genuine XP421 parts for rapid service deployment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings for your specific equipment. The part number XP421 is the best reference for compatibility, helping you avoid mismatched parts and downtime.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425684803746,"sku":"XP421","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\/siemens-xp421-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}