{"product_id":"merit-brass-a2d20r-time-delay-fuse-20a-250v-rk1","title":"Merit Brass A2D20R Time-delay Fuse 20A 250V RK1","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MERIT BRASS A2D20R is a Class RK1 time-delay fuse rated at 20 amps and 250 volts. It is designed for overcurrent protection in electrical distribution systems where temporary inrush currents from motors or transformers must be tolerated without nuisance tripping. The time-delay characteristic allows the fuse to hold through startup surges while still providing fast response to sustained fault conditions. Licensed electricians install this fuse in panelboards, motor control centers, and disconnect enclosures. It ships in a 10-unit pack, weighing 0.42 pounds total.\u003c\/p\u003e\n\u003cp\u003eThe A2D20R suits residential and light commercial electrical installations where Class RK1 protection is specified. RK1 fuses offer a higher degree of current limitation compared to standard Class K fuses, making them a common choice in motor branch circuits, HVAC equipment disconnect boxes, and industrial control panels. The 250-volt rating covers single-phase and lower-voltage three-phase applications. Installers typically replace these on a scheduled maintenance cycle or following fault events that result in a blown fuse.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass RK1 rating provides superior current-limiting performance over standard fuse classes\u003c\/li\u003e\n  \u003cli\u003eTime-delay design tolerates motor and transformer inrush without nuisance opens\u003c\/li\u003e\n  \u003cli\u003e20-amp continuous current rating at 250 volts AC\u003c\/li\u003e\n  \u003cli\u003ePacked 10 fuses per unit, reducing per-unit cost for service inventory\u003c\/li\u003e\n  \u003cli\u003eCompact form factor: 3.000 inches x 2.060 inches x 1.190 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for Class RK1 time-delay fuse positions in standard fusible disconnects and panelboards rated for 20A at 250 volts AC.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a licensed electrician in accordance with applicable NEC requirements. Always de-energize and lock out the circuit before removing or installing fuses. Verify the replacement fuse class, ampere rating, and voltage rating match the original equipment specification before installing. Do not substitute a higher-amperage or lower-class fuse as a workaround for repeated fuse failures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 20A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 250V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: RK1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: Time-Delay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (L x W x H)\u003c\/strong\u003e: 3.000 inches x 2.060 inches x 1.190 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10 per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.42 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 78200199084\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: MERIT BRASS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: A2D20R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERIT BRASS","offers":[{"title":"Default Title","offer_id":51383855186226,"sku":"A2D20R","price":38.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312678649.jpg?v=1782609596","url":"https:\/\/voomisupply.com\/products\/merit-brass-a2d20r-time-delay-fuse-20a-250v-rk1","provider":"Voomi Supply","version":"1.0","type":"link"}