{"product_id":"square-d-h321n-disconnect-switch","title":"Square D H321N - 30A, 240V, 3-Pole, Fused Disconnect Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D \u003cstrong\u003eH321N\u003c\/strong\u003e is a high-performance \u003cem\u003efused disconnect switch\u003c\/em\u003e designed for demanding industrial and commercial environments that demand safe, reliable electrical isolation. With a 30A, 240V rating across three poles, this device provides decisive control over three-phase circuits while supporting proper lockout\/tagout procedures for safer maintenance and servicing.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole reliability\u003c\/strong\u003e ensures complete isolation across all phases, reducing the risk of partial circuit energization and simplifying safe servicing of equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFused protection\u003c\/strong\u003e adds current interruption capability at the source, helping to manage fault currents and protect downstream equipment and personnel.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndoor, general-use enclosure\u003c\/strong\u003e with a \u003cem\u003eNEMA 1\u003c\/em\u003e rating makes it well-suited for clean, non-corrosive spaces such as control rooms, switchgear areas, and manufacturing floors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLockout\/tagout readiness\u003c\/strong\u003e supports compliant maintenance procedures, giving workers a clear, verifiable way to secure circuits during service.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurability for long-term use\u003c\/strong\u003e designed to withstand regular on\/off operation in busy environments, delivering dependable disconnection when you need it most.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e motor control circuits, conveyor lines, HVAC equipment, and other three-phase installations where reliable isolation is essential for safety and uptime. Whether you're upgrading legacy gear or specifying new equipment for a busy production line, the H321N provides a compact, robust solution that integrates with existing electrical distributions without sacrificing safety or performance.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy choose the H321N over non-fused disconnects?\u003c\/strong\u003e The built-in fusing complements the switch by offering immediate current interruption at the source, helping manage surge and fault conditions while enabling straightforward lockout\/tagout workflows. This means easier maintenance, improved safety, and reduced downtime in everyday operations.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage rating: \u003cstrong\u003e30A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage rating: \u003cstrong\u003e240V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eNumber of poles: \u003cstrong\u003e3-Pole\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eEnclosure: \u003cstrong\u003eNEMA 1\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eProduct type: \u003cstrong\u003eFused Disconnect Switch\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eBrand\/model: \u003cstrong\u003eSquare D H321N\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eEquip your electrical system with a purpose-built, safety-first disconnect that engineers and technicians can rely on. The Square D H321N translates industrial-grade protection into practical, everyday reliability for a safer, more efficient operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default Title","offer_id":46383655551138,"sku":"H321N","price":410.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/disconnect_switches_generic_a1e5bfe4-a2b1-40cb-bfa9-7cb90eb7adca.png?v=1765251745","url":"https:\/\/www.ampstate.com\/products\/square-d-h321n-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}