{"product_id":"siemens-xp421g-fusible-bus-plug","title":"Siemens | XP421G | Fusible Bus Plug | 4-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens \u003cstrong\u003eXP421G\u003c\/strong\u003e Fusible Bus Plug — a precise, OEM-grade solution designed for maintenance, retrofit, and replacement in Siemens switchgear and bus assemblies. This 4-pole configuration delivers reliable, balanced protection across all phases, ensuring consistent performance in demanding industrial environments.\u003c\/p\u003e \u003cp\u003eKey advantages you’ll feel in the field:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-grade compatibility:\u003c\/strong\u003e Specifically engineered by Siemens to align with original equipment specifications, mounting geometry, and contact interfaces.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4-pole configuration:\u003c\/strong\u003e Provides complete phase protection for four-wire systems, promoting even current distribution and predictable fault responses.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRapid maintenance and retrofit:\u003c\/strong\u003e Designed to slot into existing Siemens infrastructure with minimal setup, helping reduce downtime during service windows.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable replacement:\u003c\/strong\u003e A dependable, manufacturer-backed part that simplifies stocking and ensures consistent electrical characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eImportant compatibility guidance:\u003c\/p\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings against your equipment specifications. The part number \u003cstrong\u003eXP421G\u003c\/strong\u003e is the best reference for compatibility, so use it to verify exact fitment in your Siemens bus assemblies.\u003c\/p\u003e \u003cp\u003eIdeal use cases include:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRetrofit of aging Siemens panels where a four-pole fusible plug is required\u003c\/li\u003e \u003cli\u003eMaintenance replacements to restore protective functionality quickly\u003c\/li\u003e \u003cli\u003eSpare-part stocking for field service teams to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips for installation and maintenance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify model, panel rating, and mounting compatibility against equipment documentation using the XP421G reference.\u003c\/li\u003e \u003cli\u003eHandle fusible components with appropriate safety procedures and ensure the system is de-energized before installation.\u003c\/li\u003e \u003cli\u003eDocument the part number in maintenance records to streamline future replacements and audits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe Siemens XP421G Fusible Bus Plug delivers targeted, reliable protection for four-pole systems, backed by OEM engineering and designed to keep your critical infrastructure running smoothly. Whether you’re refreshing an aging installation or performing a strategic retrofit, this plug provides the trusted compatibility you need to maintain performance and safety.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425684770978,"sku":"XP421G","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-xp421g-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}