{"product_id":"square-d-h321nrb-30a-240v-3-phase-switch","title":"Square D H321NRB - 30A, 240V, 3-Phase, Switch","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D H321NRB—a rugged 30A, 240V, 3-Phase switch designed for dependable on\/off isolation and overcurrent protection in demanding industrial and commercial settings. Built to withstand the rigors of daily operation, this device serves as a reliable motor disconnect, protecting both equipment and personnel during maintenance and startup sequences.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey capabilities at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e H321NRB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 30A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-Phase\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Fusible switch for compact, maintainable circuit protection\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrimary use:\u003c\/strong\u003e Motor disconnects, panelboards, and branch circuit protection where space and serviceability matter\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the H321NRB stands out\u003c\/h3\u003e\n\u003cp\u003eDesigned for environments where reliability matters most, the Square D H321NRB delivers quick, clean isolation for 3-phase systems. Its compact form supports tight electrical rooms and panel enclosures, while the fusible switch design provides robust protection for motors and other 3-phase loads. This isn’t a generic disconnect—it’s a purpose-built solution that simplifies maintenance and enhances safety in busy facilities.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMotor disconnects in small to mid-sized industrial equipment\u003c\/li\u003e \u003cli\u003ePrimary protection device within panelboards handling 3-phase power\u003c\/li\u003e \u003cli\u003eBranch circuit protection where a dependable, easy-to-service switch is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical benefits you’ll notice\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eClear, immediate isolation of 3-phase circuits for safer maintenance and servicing\u003c\/li\u003e \u003cli\u003eDurable construction tuned for industrial and commercial duty cycles\u003c\/li\u003e \u003cli\u003eSimplified wiring and accessible contacts to reduce downtime during inspections\u003c\/li\u003e \u003cli\u003eConsistent performance for motor loads, pumps, conveyors, and other three-phase equipment\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and maintenance essentials\u003c\/h3\u003e\n\u003cp\u003eInstall by a qualified electrician in accordance with electrical codes and standards. Regularly inspect connections for secure torque, keep the switch enclosure clean, and verify that the protective device configuration remains appropriate for the connected 3-phase load. The Square D H321NRB is built for long service life, with maintenance-friendly features that minimize disruption when service is needed.\u003c\/p\u003e \u003cp\u003eWhether you’re outfitting a new panelboard or upgrading an aging disconnect, the Square D H321NRB delivers dependable 3-phase isolation at 240V with a compact footprint. It’s the practical choice for engineers and technicians who value precise, reliable control of motor and branch-circuit loads. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default","offer_id":46390342844578,"sku":"H321NRB","price":429.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-h321nrb-30a-240v-3-phase-switch-423.webp?v=1788864416","url":"https:\/\/www.ampstate.com\/products\/square-d-h321nrb-30a-240v-3-phase-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}