{"product_id":"square-d-h365n-400a-3p-600v-safety-switch","title":"Square D H365N 400A 3P 600V Safety Switch, NEMA 1, Fusible | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D H365N 400A 3P 600V Safety Switch\u003c\/strong\u003e (NEMA 1, Fusible) from AmpState is a durable equipment disconnect and isolation solution designed for reliable, at-a-glance safety at the point of use. Built to serve maintenance teams, panel builders, and spare inventory programs, this 400 A, 3-pole unit keeps critical systems protected and easy to service in today’s industrial environments.\u003c\/p\u003e \u003ch3\u003eKey features that matter on the job\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400 A amperage rating\u003c\/strong\u003e provides a robust disconnect for mid-size to larger loads, reducing downtime during maintenance and service.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3 poles\u003c\/strong\u003e tailored for three-phase systems, ensuring proper interruption and coordination across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V maximum rating\u003c\/strong\u003e accommodates a wide range of motors, drives, and feeders common in industrial facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNEMA 1 enclosure\u003c\/strong\u003e optimized for indoor, dry environments, delivering dependable protection in standard shop floors and control rooms.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFusible design\u003c\/strong\u003e combines overcurrent protection with a disconnect, enabling precise protection schemes and straightforward fuse replacement when needed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDirect part-number match\u003c\/strong\u003e simplifies procurement and reduces downtime when sourcing spares or replacements from AmpState.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits most\u003c\/h3\u003e\n\u003cp\u003eThis safety switch is ideal for teams that need a reliable, easily serviceable disconnect for motors, conveyors, pumps, and other 3-phase equipment. It’s also a practical choice for panel builders who specify a ready-to-install, compatible fusible safety switch, and for maintenance inventories where fast access to exact part numbers matters.\u003c\/p\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cp\u003e- Isolating equipment for safe maintenance on production lines, HVAC systems, and processing machinery\u003c\/p\u003e\n\u003cp\u003e- Providing a clear, local disconnect point in control panels and switchgear assemblies\u003c\/p\u003e\n\u003cp\u003e- Stocking a ready-to-go spare that aligns with standard Square D specifications and your existing fleet\u003c\/p\u003e \u003ch3\u003eWhy this configuration stands out\u003c\/h3\u003e\n\u003cp\u003eFusible safety switches like the H365N offer a clear balance between protection and operability. The fuse-based protection helps coordinate with downstream devices, while the switch handle delivers a straightforward, human-friendly means to disconnect power for servicing. Choosing a Square D unit also aligns with widely used control architectures and training resources, making it easier for technicians to implement and maintain.\u003c\/p\u003e \u003ch3\u003eImportant considerations and support\u003c\/h3\u003e\n\u003cp\u003eEnsure your installation matches the device’s 600 V rating and three-pole configuration, and pair with the appropriate fuse blocks for the expected fault currents. If you’re unsure about fit or compatibility, AmpState can assist in confirming the correct part number match to your panel or system.\u003c\/p\u003e \u003cp\u003eOrder with confidence: the Square D H365N 400A 3P 600V Safety Switch, NEMA 1, Fusible is the dependable choice for clean, safe, and efficient equipment isolation at the point of use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411001790626,"sku":"H365N","price":11122.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-h365n-400a-3p-600v-safety-switch-nema-1-fusible-ampstate-944.webp?v=1789002059","url":"https:\/\/www.ampstate.com\/products\/square-d-h365n-400a-3p-600v-safety-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}