{"product_id":"square-d-sd4210-fusible-bus-plug","title":"Square D | SD4210 | Fusible Bus Plug | 100A | 4-Pole | 240V","description":"\u003cdiv\u003e\n\u003cstrong\u003eSquare D SD4210 Fusible Bus Plug\u003c\/strong\u003e is a purpose-built solution for maintenance, retrofit, and replacement tasks in compatible Square D electrical systems. This 100A, 4-pole, 240V fusible bus plug is designed to slot into your panel configuration quickly, delivering reliable protection while minimizing downtime during service work. \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 4-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e SD4210\u003c\/li\u003e\n\u003c\/ul\u003e Designed for precise compatibility, the SD4210 is the straightforward choice when a direct, factory reference is required. Its fusible design provides the protective interruption needed to safely isolate circuits during maintenance, retrofits, or component replacements, helping you safeguard equipment and personnel while you work. Who benefits most:\n\u003cul\u003e \u003cli\u003ePlant engineers planning routine panel maintenance or phased upgrades\u003c\/li\u003e \u003cli\u003eMaintenance teams performing retrofit projects to upgrade protection schemes\u003c\/li\u003e \u003cli\u003eElectrical contractors needing a dependable, plug-in solution for 100A, 4-pole, 240V bus configurations\u003c\/li\u003e\n\u003c\/ul\u003e Key considerations and best practices:\n\u003cul\u003e \u003cli\u003eAlways \u003cstrong\u003econfirm fit and ratings before ordering\u003c\/strong\u003e—the SD4210 is the best compatibility reference\u003c\/li\u003e \u003cli\u003eVerify your panel accepts a fusible bus plug with \u003cstrong\u003e100A, 4-pole, 240V\u003c\/strong\u003e specifications\u003c\/li\u003e \u003cli\u003eKeep a spare SD4210 on hand for rapid maintenance cycles to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e Practical use scenarios:\n\u003cul\u003e \u003cli\u003ePerforming scheduled maintenance on a 240V distribution bus without compromising other feeders\u003c\/li\u003e \u003cli\u003eRetrofits where adding fusible protection to existing bus assemblies is required\u003c\/li\u003e \u003cli\u003eReplacing a failed or worn-out bus plug with a genuine Square D component to restore proper protection\u003c\/li\u003e\n\u003c\/ul\u003e This fusible bus plug from Square D combines straightforward installation with targeted protection, helping you maintain system reliability in demanding environments. If your panel and protection strategy align with 100A, 4-pole, 240V specifications, the SD4210 provides a dependable, exact-fit solution designed for long-term service continuity.\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425719996578,"sku":"SD4210","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\/square-d-sd4210-fusible-bus-plug","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}