{"product_id":"cutler-hammer-dh321frk-disconnect-switch","title":"Cutler-Hammer DH321FRK - 30A, 240V, 3-Pole, Fused Disconnect Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Cutler-Hammer DH321FRK is a robust 30 A, 240 V, 3-Pole Fused Disconnect Switch engineered for demanding industrial and commercial environments. It delivers safe, code-compliant electrical isolation and reliable disconnection under load, making it an essential component for safeguarding maintenance work and ensuring continuous operation of critical equipment. Designed to integrate with lockout\/tagout (LOTO) procedures, this switch helps teams work confidently around energized systems.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 30 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole for 3-phase circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure rating:\u003c\/strong\u003e NEMA 3R for outdoor and exposed installations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Fused disconnect switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/model:\u003c\/strong\u003e Cutler-Hammer DH321FRK\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy the DH321FRK stands out\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrongintegrated overcurrent protection:\u003e The fused design provides reliable protection against short circuits and overloads, helping to safeguard downstream equipment and extend motor life.\u003c\/strongintegrated\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe isolation for maintenance:\u003c\/strong\u003e Built with lockout\/tagout compatibility in mind, it makes energizing or de-energizing routines straightforward and compliant with safety standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged, weather-ready enclosure:\u003c\/strong\u003e The NEMA 3R rating means dependable performance in outdoor or damp environments, even under harsh conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficient serviceability:\u003c\/strong\u003e Field-replaceable fuses and a straightforward switch mechanism reduce downtime during maintenance or fuse changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable, long-term build:\u003c\/strong\u003e Engineered for continuous operation in demanding industrial settings, delivering consistent performance over time.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMotor drives and pumps in manufacturing plants, mills, and processing facilities\u003c\/li\u003e\n\u003cli\u003eOutdoor HVAC units, air handlers, and cooling systems that require safe isolation\u003c\/li\u003e\n\u003cli\u003eConveyor systems and material-handling equipment where quick, safe shutdown is critical\u003c\/li\u003e\n\u003cli\u003eIndustrial machinery and equipment that operate on three-phase 240 V circuits\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow the DH321FRK compares to alternative disconnects\u003c\/h2\u003e\n\u003cp\u003eCompared with non-fused disconnect switches, the DH321FRK adds explicit short-circuit protection through its fuses, helping to prevent cascading faults and protecting both personnel during maintenance and connected equipment. Its combination of three-pole design, 240 V rating, and NEMA 3R enclosure provides a well-rounded solution for environments where reliability, safety, and weather resilience are priorities.\u003c\/p\u003e \u003ch2\u003eTips for installation, use, and maintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that your circuit matches the 30 A, 240 V, 3-Pole specifications before installation.\u003c\/li\u003e\n\u003cli\u003eEnsure appropriate lockout\/tagout devices are used to secure the switch during servicing.\u003c\/li\u003e\n\u003cli\u003eRegularly inspect the enclosure for moisture or corrosion, especially in outdoor installations; address any seal or gasket wear promptly.\u003c\/li\u003e\n\u003cli\u003eWhen replacing fuses, select the correct fuse type and rating as specified for your load to maintain protection standards.\u003c\/li\u003e\n\u003cli\u003eDocument maintenance and fuse replacement intervals to support safety compliance and operational reliability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor teams seeking a dependable, clearly defined isolation point with integrated protection, the Cutler-Hammer DH321FRK delivers precise control, enhanced safety, and durable performance in 30 A, 240 V, 3-Pole configurations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default Title","offer_id":46383628353698,"sku":"DH321FRK","price":610.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/cutler-hammer-dh321frk-30a-240v-3-pole-fused-disconnect-switch-146.webp?v=1788812520","url":"https:\/\/www.ampstate.com\/products\/cutler-hammer-dh321frk-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}