{"product_id":"square-d-h326n-600a-3p-240v-safety-switch","title":"Square D H326N 600A 3P 240V Safety Switch, NEMA 1, Fusible | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D H326N: a rugged, fusible safety switch engineered for reliable equipment disconnect and isolation at the point of use. With a \u003cstrong\u003e600 A\u003c\/strong\u003e rating across \u003cstrong\u003e3 poles\u003c\/strong\u003e at \u003cstrong\u003e240 V\u003c\/strong\u003e, this \u003cstrong\u003eNEMA 1\u003c\/strong\u003e enclosure is designed for indoor electrical rooms and industrial spaces where fast, safe isolation is non‑negotiable.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eExact BOM-compatible replacement\u003c\/strong\u003e — the H326N is the ideal choice for replacement projects and stocking spares when you need to keep the bill of materials aligned to the original part number. Because this is the exact part your system was built around, you’ll avoid footprint mismatches, rewiring guesswork, or compatibility hiccups during maintenance or upgrades.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eKey specs:\u003c\/strong\u003e Square D, \u003cstrong\u003eH326N\u003c\/strong\u003e, \u003cstrong\u003e600 A\u003c\/strong\u003e, \u003cstrong\u003e3P\u003c\/strong\u003e, \u003cstrong\u003e240 V\u003c\/strong\u003e, \u003cstrong\u003eNEMA 1\u003c\/strong\u003e, Fusible\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePurpose:\u003c\/strong\u003e indoor equipment disconnect and isolation at the point of use, providing reliable overcurrent protection when paired with the correct fuses\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for:\u003c\/strong\u003e heavy machinery, large motor circuits, manufacturing lines, conveyors, and HVAC disconnects in industrial environments\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOperational advantage:\u003c\/strong\u003e simplifies maintenance windows by delivering a true, exact-match component that fits established electrical footprints and wiring schemes\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e available from AmpState with support to confirm fit and compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this matters in practice\u003c\/strong\u003e: choosing a fusible, three‑pole disconnect like the H326N means you’re pairing a robust switching device with the protective granularity you need for 600 A circuits. It supports controlled isolation for maintenance, reduces downtime by fitting straight into existing assemblies, and helps maintain regulatory and safety standards in your electrical rooms.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eUse cases and scenarios\u003c\/strong\u003e — install this switch wherever a reliable point‑of‑use disconnect is required for large motors, compressors, or process equipment operating on 240 V three‑phase power. It’s particularly valuable in retrofit projects where you’re restoring legacy protection schemes or aligning spares with the original equipment manufacturer’s numbering.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical tips\u003c\/strong\u003e:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify that your system is configured for 240 V three‑phase service and that a NEMA 1 indoor enclosure is appropriate for your environment.\u003c\/li\u003e \u003cli\u003ePair the fusible switch with the correct fuse blocks and protective devices to ensure proper overcurrent protection.\u003c\/li\u003e \u003cli\u003eKeep an exact BOM-aligned spare on hand to minimize downtime during maintenance or part replacement.\u003c\/li\u003e \u003cli\u003eIf you’re unsure about fit, \u003cem\u003emessage us\u003c\/em\u003e — AmpState can help confirm compatibility and guide you to the right part for your installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eReady to source an exact, reliable replacement? The Square D \u003cstrong\u003eH326N\u003c\/strong\u003e 600 A, 3P, 240 V Safety Switch (NEMA 1, Fusible) is available from AmpState. \u003cem\u003eNeed help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411002020002,"sku":"H326N","price":13261.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/square-d-h326n-600a-3p-240v-safety-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}