{"product_id":"general-electric-sb421rgr-fusible-bus-plug","title":"General Electric | SB421RGR | Fusible Bus Plug | 30A | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eThe General Electric SB421RGR Fusible Bus Plug is a purpose-built component designed to restore and protect critical circuits in compatible GE panels. Built for maintenance, retrofit, and replacement projects, this 30A, 240V bus plug delivers reliable fusible protection where exact specifications matter most.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 30A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e SB421RGR\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Fusible bus plug\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e maintenance, retrofit, and replacement\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is the best reference for matching your panel requirements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this fusible bus plug matters\u003c\/h3\u003e\n\u003cp\u003eDesigned to integrate seamlessly with GE panels, the SB421RGR provides a controlled, fuse-protected path for circuits, helping to isolate faults quickly and protect downstream equipment. The fusible design supports safe de-energization during maintenance while preserving the panel’s original wiring geometry and contact interfaces. This isn’t a generic insert—it's a GE‑specific solution that preserves panel integrity and performance.\u003c\/p\u003e \u003ch3\u003eWho benefits most\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical technicians performing routine maintenance or panel upgrades within GE systems\u003c\/li\u003e \u003cli\u003eFacilities managers overseeing retrofit projects that require compliant, fuse-protected bus plugs\u003c\/li\u003e \u003cli\u003eReplacement workflows where the SB421RGR matches the existing panel’s protective topology\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and practical benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance and service:\u003c\/strong\u003e Quickly replace a worn or failed fusible link path to restore protected circuits without overhauling the entire panel.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit projects:\u003c\/strong\u003e Upgrade circuits to fused protection while preserving the original panel layout and bus architecture.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement scenarios:\u003c\/strong\u003e When a panel requires a precise GE-compatible bus plug, SB421RGR ensures compatibility and reliable operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSafety and reliability:\u003c\/strong\u003e The fusible path provides a defined, predictable fail mode, reducing the risk of uncontrolled fault propagation in fault conditions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation notes\u003c\/h3\u003e\n\u003cp\u003eBefore purchasing, verify that SB421RGR matches your panel’s bus configuration and ratings. The part number is the most reliable reference for compatibility. Installations should conform to local electrical codes and GE manuals, and must be performed by a qualified electrician to ensure safe, correct integration into your distribution system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":46425729040546,"sku":"SB421RGR","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\/general-electric-sb421rgr-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}