{"product_id":"bussmann-frn-r-30a-250v-fusetron-dual-element-time-delay-rk5-cartridge-fuse","title":"Bussmann FRN-R 30A 250V Fusetron Dual-Element Time-Delay RK5 Cartridge Fuse","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe Bussmann FRN-R fuse is a heavy duty time-delay solution designed to guard motors and related circuits in demanding environments. Built with a brass body and a fiberglass tube, this cartridge fuse blends robust protection with reliable performance, helping to manage startup surges and longer overloads without prematurely interrupting operation.\u003c\/p\u003e\u003cp\u003eThis part carries UL Listing and CSA Certification, signaling adherence to recognized safety standards. Classified as RK5, it offers current limiting features that help maintain safe current levels during fault conditions. The dual-element design is purposefully tuned to permit short startup bursts typical of motors, while opening quickly during extended overloads or short circuits.\u003c\/p\u003e\u003ch3\u003eKey Benefits at a Glance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTime-delay protection to accommodate motor startups without sacrificing long-term safeguards.\u003c\/li\u003e\n\u003cli\u003eDual-element construction provides layered protection against overloads and short circuits.\u003c\/li\u003e\n\u003cli\u003eCurrent limiting with Class RK5 designation supports selective coordination in complex panels.\u003c\/li\u003e\n\u003cli\u003eUL Listed and CSA Certified for reliability and compliance.\u003c\/li\u003e\n\u003cli\u003eEnd cap grooves enable compatibility with Class H, Class K, or Class R fuse blocks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications and Real-World Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIdeal for motor control centers, power panelboards, and combination starters where higher amps or voltages are needed.\u003c\/li\u003e\n\u003cli\u003eUseful in industrial, commercial, and agricultural settings, including equipment like pumps, air conditioning systems, and industrial machinery.\u003c\/li\u003e\n\u003cli\u003eSupports selective coordination to help minimize blackout risk in multi-zone setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cp\u003eThe dual-element design opens in as little as 0.004 seconds under short-circuit conditions, while the time-delay feature allows initial startup surges to pass. When a longer, dangerous overload occurs, the fuse interrupts to protect connected equipment.\u003c\/p\u003e\u003ch3\u003eSpecifications and What's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCurrent rating: 30 A\u003c\/li\u003e\n\u003cli\u003eVoltage rating: 250 VAC\u003c\/li\u003e\n\u003cli\u003eClass RK5, current limiting\u003c\/li\u003e\n\u003cli\u003eUL Listed, CSA Certified\u003c\/li\u003e\n\u003cli\u003eConstruction: fiberglass tube, brass end caps\u003c\/li\u003e\n\u003cli\u003eIncludes: 1 FRN-R-30A cartridge fuse\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDesigned to fit in power panels, motor control centers, and machinery disconnects, this fuse supports robust motor protection without forcing frequent replacements.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What does the Bussmann FRN-R fuse protect?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It guards motors and circuits from overloads, single phasing, and short circuits in panels and motor control centers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Where is FRN-R typically used?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Common in power panels, motor control centers, starters, and machinery disconnects across industrial, commercial, and agricultural settings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Bussmann","offers":[{"title":"Default Title","offer_id":53087096176751,"sku":"B00004WA2X","price":22.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0598\/3087\/files\/bussmann-frn-r-30a-brass-250v-fusetron-dual-element-time-delay-fuse.jpg?v=1778648180","url":"https:\/\/taskholt.com\/products\/bussmann-frn-r-30a-250v-fusetron-dual-element-time-delay-rk5-cartridge-fuse","provider":"TaskHolt","version":"1.0","type":"link"}