{"product_id":"square-d-hu366-600a-3p-600v-safety-switch","title":"Square D HU366 600A 3P 600V Safety Switch, NEMA 1, Fusible, Non-Fusible | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D HU366 safety switch is a rugged, 3-pole disconnect designed for reliable point-of-use isolation in industrial environments. Built to support heavy loads, it offers both fusible and non-fusible configurations—making retrofit projects and maintenance planning simpler when the part number must stay consistent.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole, 600 A\u003c\/strong\u003e rating provides a robust disconnect for demanding motors and equipment\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V\u003c\/strong\u003e maximum voltage suitability for standard industrial distribution\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNEMA 1 enclosure\u003c\/strong\u003e ideal for indoor, dry environments with easy access for maintenance\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFusible or Non-Fusible\u003c\/strong\u003e configurations give you installation flexibility to match your protection strategy\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEquipment disconnect and isolation at the point of use\u003c\/strong\u003e supports safe servicing, lockout\/tagout, and quick Downtime planning\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e Retrofit-friendly\u003c\/strong\u003e keeps the catalog part number intact, simplifying ordering and spare-part continuity\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters in the field: HU366 is not just a switch—it's a strategic component that keeps downtime predictable and maintenance workflows efficient. The 3-pole design ensures balanced switching across phases, reducing electrical stress during disconnections and enabling clearer troubleshooting in complex panel layouts. The choice between fusible and non-fusible configurations lets you tailor protection without overhauling your control architecture.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: HU366\u003c\/li\u003e \u003cli\u003eProduct Type: Safety Switch\u003c\/li\u003e \u003cli\u003eAmperage: 600 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage: 600 V\u003c\/li\u003e \u003cli\u003eEnclosure: NEMA 1\u003c\/li\u003e \u003cli\u003eConfiguration: Fusible or Non-Fusible\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAvailable from AmpState, the HU366 is a dependable choice for facilities seeking a ready-to-install, configurable safety switch that aligns with retrofit projects and ongoing maintenance plans. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411000479906,"sku":"HU366","price":10341.0,"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-hu366-600a-3p-600v-safety-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}