{"product_id":"square-d-h321n-disconnect-switch-7","title":"Square D H321N - 30A, 240V, 3-Pole, Fused Safety Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D H321N is a 30A, 240V, 3-pole fused safety switch engineered for reliable electrical isolation in demanding industrial and commercial environments. Designed to support proper lockout\/tagout procedures, it delivers dependable disconnection under load, helping maintenance teams work safely and efficiently while minimizing downtime.\u003c\/p\u003e \u003ch3\u003eWhy this fused safety switch stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFull three-phase isolation\u003c\/strong\u003e thanks to a 3-pole design that safely interrupts all live conductors in a 3-phase system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFused protection\u003c\/strong\u003e provides controlled current interruption, adding an extra layer of safety for motor loads and control circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear electrical ratings\u003c\/strong\u003e at \u003cstrong\u003e30A\u003c\/strong\u003e and \u003cstrong\u003e240V\u003c\/strong\u003e, making it a versatile fit for a wide range of equipment in factories, warehouses, and large facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLockout\/tagout readiness\u003c\/strong\u003e aligned with standard maintenance practices, helping teams secure energy isolation during service and repair.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, long-term performance\u003c\/strong\u003e built to withstand the rigors of busy industrial environments while delivering consistent disconnection under load.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMotor control centers and conveyors in manufacturing floors where rapid, safe isolation is essential for servicing equipment.\u003c\/li\u003e \u003cli\u003eHVAC pumps and fans in commercial buildings that require reliable shutdown during maintenance windows.\u003c\/li\u003e \u003cli\u003eIndustrial pumps, mixers, and processing line equipment where full disconnects are necessary for safe service procedures.\u003c\/li\u003e \u003cli\u003eMaintenance fleets and OEMs seeking a dependable, easy-to-integrate safety switch that supports robust lockout\/tagout protocols.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it fits into your system\u003c\/h3\u003e\n\u003cp\u003eMount the H321N in a compatible electrical enclosure and wire it to the three power conductors. Its fused design ensures a clean, predictable disconnection path under load, reducing arc exposure and enabling technicians to work on energized equipment with confidence. By providing a clear, mechanical disconnect for all three lines, it helps you meet safety requirements and streamline servicing workflows.\u003c\/p\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 30A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Fused Safety Switch\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e H321N\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUpgrade to the Square D H321N to enhance electrical safety, simplify lockout\/tagout procedures, and ensure dependable disconnection under load across your critical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default Title","offer_id":46383751725218,"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_e6484d51-f2ab-4173-bb32-d7a4e55a7b79.png?v=1765253460","url":"https:\/\/www.ampstate.com\/products\/square-d-h321n-disconnect-switch-7","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}