{"product_id":"bussmann-rd40-3-508-disconnect-switch","title":"Bussmann RD40-3-508 - 40A, 600V, Disconnect Switch","description":"\u003cdiv\u003eThe Bussmann RD40-3-508 Disconnect Switch is built for safety, reliability, and long-term durability in demanding industrial and commercial environments. With a 40A amperage rating and a 600V voltage rating, it provides solid electrical isolation when you need to service, maintain, or isolate equipment without compromising safety or uptime. Key advantages\n\u003cul\u003e\n\u003cli\u003eLockout\/tagout ready: Designed to support proper lockout\/tagout procedures, helping you meet safety standards during maintenance and regulatory inspections.\u003c\/li\u003e\n\u003cli\u003e dependable disconnection under load: Engineered to interrupt power cleanly and reliably, reducing the risk of arcing or unintended energization while work is in progress.\u003c\/li\u003e\n\u003cli\u003eIndustrial-grade durability: Built to withstand demanding environments and frequent operation, delivering long-term performance in panels, switchgear, and equipment enclosures.\u003c\/li\u003e\n\u003cli\u003eClear specification alignment: 40A current capacity paired with a 600V rating makes it suitable for a wide range of medium-duty circuits in commercial buildings, manufacturing floors, and utility spaces.\u003c\/li\u003e\n\u003c\/ul\u003e Specifications at a glance\n\u003cul\u003e\n\u003cli\u003eAmperage Rating: 40A\u003c\/li\u003e\n\u003cli\u003eVoltage Rating: 600V\u003c\/li\u003e\n\u003cli\u003eProduct Type: Disconnect Switch\u003c\/li\u003e\n\u003cli\u003eBrand: Bussmann\u003c\/li\u003e\n\u003cli\u003eModel: RD40-3-508\u003c\/li\u003e\n\u003c\/ul\u003e Ideal for\n\u003cul\u003e\n\u003cli\u003eFacilities managers overseeing electrical rooms in manufacturing plants, warehouses, and large commercial facilities\u003c\/li\u003e\n\u003cli\u003eElectrical contractors performing safe service disconnections during maintenance or panel work\u003c\/li\u003e\n\u003cli\u003eSystems that require regular isolation of equipment for testing, calibration, or periodical servicing\u003c\/li\u003e\n\u003c\/ul\u003e Practical use and best practices\n\u003cul\u003e\n\u003cli\u003ePair with a compliant lock and tag to enforce lockout\/tagout procedures and prevent inadvertent energization.\u003c\/li\u003e\n\u003cli\u003eUse in panels or switchgear where a dedicated disconnect is needed to provide a visible, physical isolation point.\u003c\/li\u003e\n\u003cli\u003eVerify isolation with a proper testing instrument before beginning any maintenance, aligning with site safety protocols and electrical codes.\u003c\/li\u003e\n\u003cli\u003ePlan for future maintenance cycles by selecting a switch with durable construction that stands up to repeated operation in busy utility or production spaces.\u003c\/li\u003e\n\u003c\/ul\u003e Why the RD40-3-508 stands out\nThis disconnect switch from Bussmann is purpose-built to deliver reliable isolation where it matters most—during maintenance windows, safety lockouts, and routine servicing—while standing up to the rigors of commercial and industrial environments. Its combination of a solid 40A rating, 600V capability, and lockout-friendly design makes it a pragmatic, code-conscious choice for teams that value safety, reliability, and uninterrupted operations. Equip your electrical room with the RD40-3-508 to ensure quick, safe, and compliant isolation when servicing critical equipment.\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default Title","offer_id":46383474278562,"sku":"RD40-3-508","price":610.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/disconnect_switches_generic_e31ef03d-6367-45a7-83d4-96a50c61ebdc.png?v=1765249244","url":"https:\/\/www.ampstate.com\/products\/bussmann-rd40-3-508-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}