{"product_id":"hf321s-30a-240v-3-pole-1-phase-fusible-safety-switch-nema-4","title":"HF321S - 30A, 240V, 3-Pole, 1-Phase, Fusible, Safety Switch, NEMA 4","description":"\u003cdiv\u003e\n\u003cp\u003eMeet \u003cstrong\u003eHF321S\u003c\/strong\u003e, a rugged, purpose-built safety switch that combines simple on\/off isolation with reliable overcurrent protection for demanding industrial and commercial environments. With a 30A rating, 240V operation, and a \u003cstrong\u003e3-Pole, 1-Phase\u003c\/strong\u003e configuration, this fusible safety switch is designed to keep motors, pumps, and feeders safely under control while reducing wiring complexity and maintenance downtime.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eIntegrated fusible protection\u003c\/strong\u003e means you get both disconnection and overcurrent protection in a single, compact unit. Fuses are designed for straightforward replacement, helping you minimize downtime when a fault occurs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNEMA 4 enclosure\u003c\/strong\u003e delivers dependable performance in a variety of environments—indoor, outdoor, or washdown areas—resisting dust, debris, and water exposure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, maintainable design\u003c\/strong\u003e fits neatly into crowded electrical rooms and panelboards, making it ideal for retrofit projects or new installations where space is at a premium.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile motor and circuit protection\u003c\/strong\u003e—perfect for motor disconnects, feeder disconnects in panelboards, and branch-circuit protection where fast, reliable isolation is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustry-ready performance\u003c\/strong\u003e supports single-phase systems requiring robust fault isolation, reducing the risk of fault energy propagating through the equipment and improving overall system safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho benefits most from the HF321S? Engineers and maintenance teams in manufacturing, HVAC, water treatment, and material handling environments that demand a dependable, easy-to-service safety switch for motors and circuits up to 30A. It’s particularly well-suited for installations where an all-in-one solution—combination of disconnect and fuse protection within a weather-resistant housing—simplifies wiring, inventory, and maintenance planning.\u003c\/p\u003e \u003cp\u003ePractical use scenarios include:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDisconnecting small to mid-size motors on conveyors, pumps, or fans while providing built-in protection against overcurrents.\u003c\/li\u003e \u003cli\u003eServing as a feeder or branch-circuit disconnect within a panelboard, reducing the number of separate protective devices required.\u003c\/li\u003e \u003cli\u003eOutdoor or washdown-ready installations in facilities where environmental exposure is a concern, thanks to the NEMA 4 rated enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey specifications at a glance:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eModel: HF321S\u003c\/li\u003e \u003cli\u003eAmperage: 30A\u003c\/li\u003e \u003cli\u003eVoltage: 240V\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003ePhase: 1-Phase\u003c\/li\u003e \u003cli\u003eEnclosure Rating: NEMA 4\u003c\/li\u003e \u003cli\u003eFusible: Yes (fusible safety switch)\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing HF321S means opting for a streamlined, reliable safety solution that reduces complexity without compromising protection. This fusible safety switch directly supports safer motor control and branch circuit protection, helping you maintain uptime and meet stringent safety standards. If your project calls for a compact, field-protective switch with proven performance in challenging environments, the HF321S is ready to install and perform.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default","offer_id":46390381084834,"sku":"HF321S","price":2016.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/fusible_disconnect_generic_403b3dd8-7d3b-4e8b-a16d-aa5a2d9f5bce.png?v=1765369710","url":"https:\/\/www.ampstate.com\/products\/hf321s-30a-240v-3-pole-1-phase-fusible-safety-switch-nema-4","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}