{"product_id":"mersen-30782001749072-class-rk5-time-delay-fuse-70a-600v","title":"Mersen 30782001749072 Class RK5 Time-delay Fuse 70A 600V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MERSEN 30782001749072 is a dual-element, time-delay, current-limiting fuse rated at 70 amps and 600 volts, classified as Class RK5 with a built-in rejection feature. Known in the trade as the Tri-Onic series, this fuse is engineered for branch-circuit and motor-circuit overcurrent protection in industrial electrical systems. The dual-element design separates the overload-sensing function from the short-circuit-sensing function, allowing the fuse to ride through normal motor startup inrush currents without nuisance opening while still providing fast response to genuine fault conditions. Licensed electricians and industrial maintenance technicians are the primary installers of this device.\u003c\/p\u003e\n\u003cp\u003eThis fuse is suited for industrial applications where reliable overcurrent protection is required on branch circuits and motor circuits. The Class RK5 rating with rejection feature prevents substitution of lower-performing fuse classes into the same fuseholder, maintaining the integrity of the overcurrent protection scheme. Typical installations include motor control centers, panelboards, disconnect switches, and combination motor starters in commercial and industrial facilities.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-element construction tolerates motor inrush current while responding to sustained overloads and short circuits\u003c\/li\u003e\n  \u003cli\u003eTime-delay characteristic reduces nuisance tripping on motor startup loads\u003c\/li\u003e\n  \u003cli\u003eCurrent-limiting design reduces available fault energy at the protected circuit\u003c\/li\u003e\n  \u003cli\u003eClass RK5 rejection feature prevents installation of non-rejection fuses in RK5 fuseholders\u003c\/li\u003e\n  \u003cli\u003e70-amp rating suitable for motor branch circuits and general-purpose branch circuits up to 600 volts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for Class RK5 time-delay fuses used in industrial branch-circuit and motor-circuit protection applications rated up to 600 volts.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a qualified, licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit using proper lockout\/tagout (LOTO) procedures before removing or installing any fuse. Verify the fuseholder is rated for Class RK5 rejection-style fuses and confirm the circuit voltage and amperage do not exceed the fuse rating. Never replace a blown fuse without first identifying and correcting the root cause of the overcurrent condition.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e: 70 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 600 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: RK5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: Dual-element time-delay current-limiting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRejection Feature\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MERSEN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 30782001749072\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERSEN","offers":[{"title":"Default Title","offer_id":51268171661618,"sku":"30782001749072","price":161.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/308910830.jpg?v=1780701145","url":"https:\/\/voomisupply.com\/products\/mersen-30782001749072-class-rk5-time-delay-fuse-70a-600v","provider":"Voomi Supply","version":"1.0","type":"link"}