{"product_id":"mersen-hsj125-class-j-time-delay-fuse-125a","title":"Mersen HSJ125 Class J Time-delay Fuse 125A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MERSEN HSJ125 is a 125-amp Class J time-delay fuse designed for branch circuit and equipment protection in commercial and industrial electrical systems. Class J fuses provide current-limiting performance, interrupting fault currents quickly to protect downstream components including motors, transformers, and panel boards. The HSJ125 fits standard Class J fusible disconnects and loadcenters. Licensed electricians install this fuse as part of overcurrent protection schemes governed by the National Electrical Code. Its time-delay characteristic allows motors and other inductive loads to start without nuisance blowing while still providing fast response to sustained overloads and short circuits.\u003c\/p\u003e\u003cp\u003eThe HSJ125 is suited for use in commercial HVAC equipment, motor control centers, industrial machinery, and branch circuit protection panels where Class J fusing is specified. It is a common choice when upgrading from non-current-limiting fuse types to meet modern code requirements or when replacing a blown protective fuse in a fusible disconnect switch rated for Class J elements.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e125-amp continuous current rating for branch circuit overcurrent protection\u003c\/li\u003e\n\u003cli\u003eClass J current-limiting design for fast fault interruption\u003c\/li\u003e\n\u003cli\u003eTime-delay characteristic accommodates inductive motor start-up inrush\u003c\/li\u003e\n\u003cli\u003eCompact form factor fits standard Class J fusible disconnect holders\u003c\/li\u003e\n\u003cli\u003eSingle fuse per pack\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement for Class J fusible disconnect switches and loadcenters rated to accept 125-amp Class J fuses.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a licensed electrician in accordance with applicable National Electrical Code requirements. De-energize and lock out the circuit at the upstream overcurrent device before removing or installing the fuse. Verify that the fusible disconnect or fuse holder is rated for Class J fuses and for the required voltage and ampere rating before inserting the fuse. Never install a fuse with a higher ampere rating than the circuit or equipment is designed to handle.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmpere Rating\u003c\/strong\u003e: 125 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: Class J\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 6.000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.690 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 1.690 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.840 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity per Pack\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 78200132961\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: HSJ125\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERSEN","offers":[{"title":"Default Title","offer_id":51383056302386,"sku":"HSJ125","price":476.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312675702.jpg?v=1782586819","url":"https:\/\/voomisupply.com\/products\/mersen-hsj125-class-j-time-delay-fuse-125a","provider":"Voomi Supply","version":"1.0","type":"link"}