{"product_id":"mersen-a2k40r-250v-rk1-fuse-40-amp","title":"Mersen A2K40R 250V RK1 Fuse 40 Amp","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MERSEN A2K40R is a 40-amp, 250-volt Class RK1 current-limiting fuse designed for branch circuit and equipment protection in industrial, commercial, and HVAC applications. Class RK1 fuses provide a high degree of current limitation, reducing fault energy and protecting downstream components from damage during short-circuit events. Licensed electricians and HVAC technicians install this fuse in fusible disconnects and distribution panels where RK1 rejection-style fusing is required.\u003c\/p\u003e\n\u003cp\u003eThis fuse is suited for motor circuits, HVAC equipment disconnects, and general-purpose branch circuit protection rated at 250 volts AC or less. Its RK1 rejection feature prevents substitution with lower-rated fuse classes, maintaining system protection integrity. It is commonly installed in residential and light commercial service equipment, rooftop unit disconnects, and motor control panels.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e40-amp continuous current rating for branch circuit and load protection\u003c\/li\u003e\n  \u003cli\u003e250-volt AC voltage rating suitable for single-phase and multi-phase equipment circuits\u003c\/li\u003e\n  \u003cli\u003eClass RK1 current-limiting design minimizes fault energy and protects downstream components\u003c\/li\u003e\n  \u003cli\u003eRejection-style blade configuration prevents installation of lower-performing fuse classes\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard RK1 fusible disconnect switches and fuse holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for Class RK1 fusible disconnect holders and distribution equipment rated at 250 volts and accepting 40-amp fuses.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the circuit before handling any fuse or fusible disconnect. Verify the replacement fuse matches the voltage and amperage rating of the original before installing. Do not substitute a non-RK1 fuse in a rejection-style holder.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 40 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 250 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: RK1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 78200191513\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: A2K40R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERSEN","offers":[{"title":"Default Title","offer_id":51383495590194,"sku":"A2K40R","price":172.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312677961.jpg?v=1782598418","url":"https:\/\/voomisupply.com\/products\/mersen-a2k40r-250v-rk1-fuse-40-amp","provider":"Voomi Supply","version":"1.0","type":"link"}