{"product_id":"flnr125-id","title":"FLNR125-ID - 125 Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFLNR125-ID - 125 Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExperience dependable, high‑performance circuit protection with the FLNR125‑ID 125 Amp Fuse. Built for demanding industrial and commercial power systems, this Class RK5 dual‑element time‑delay (Slo‑Blo) fuse from Littelfuse features knife‑blade terminals designed for secure, vibration‑resistant installation. With a 250 V AC \/ 125 V DC rating and interruption capabilities up to 300,000 A AC or 20,000 A DC, it’s engineered to handle both heavy inrush currents and catastrophic fault events. The built‑in visual blow indicator simplifies maintenance by instantly showing when a fuse has opened—minimizing downtime and cut‑over complexity. Whether you're protecting motors, transformers, control panels, or large commercial HVAC lines, the FLNR125‑ID delivers reliable protection that keeps your system running strong, even under severe stress.\u003c\/p\u003e\n\u003cp\u003eThis fuse is designed for systems where safety, reliability, and quick servicing matter most—and it’s optimized for industrial builds, commercial energy distribution, and mission‑critical infrastructure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt‑in Visual Indicator:\u003c\/strong\u003e A clear blown‑fuse flag allows maintenance teams to identify open fuses instantly, cutting diagnostic time and reducing unplanned downtime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime‑Delay (Slo‑Blo) Operation:\u003c\/strong\u003e The dual‑element design tolerates temporary overloads (like motor start‑up) without nuisance openings, yet still responds quickly to true short‑circuit events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Interrupting Capacity:\u003c\/strong\u003e Rated up to 300,000 A AC and 20,000 A DC, this fuse handles severe fault currents without failure, providing peace of mind in high‑demand installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy‑Duty Knife‑Blade Terminals:\u003c\/strong\u003e Vibration‑resistant terminals allow for secure connections in industrial‑grade hardware, helping maintain consistent performance in rugged environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual‑Element Design:\u003c\/strong\u003e Combines overload protection with short‑circuit response—offering longer equipment life and fewer false trips in demanding circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Brand Quality:\u003c\/strong\u003e From Littelfuse—an industry leader in overcurrent protection—this product meets rigorous standards and has a proven track record in mission‑critical settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e FLNR125‑ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 125 Amps continuous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 250 V AC \/ 125 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating:\u003c\/strong\u003e Up to 300,000 A AC; 20,000 A DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Type:\u003c\/strong\u003e Time‑Delay (Slo‑Blo), Dual‑Element\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass:\u003c\/strong\u003e RK5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Style:\u003c\/strong\u003e Knife‑Blade (Indicating version)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamily\/Series:\u003c\/strong\u003e FLNR\/FLNR_ID Indicating Fuse Line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Compliance and Certifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS‑Compliant:\u003c\/strong\u003e Manufactured without restricted substances, supporting environmentally responsible installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL Listed (UL 248‑12) and CSA Certified:\u003c\/strong\u003e Conforms to North American electrical safety standards for Class RK5 fuses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEC Compliance:\u003c\/strong\u003e Designed in compliance with the National Electrical Code (NEC) for appropriate use in industrial and commercial power systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe FLNR125‑ID shines in applications where heavy machinery, industrial motors, large control panels, and transformer feeds are present. It’s particularly effective in motor branch circuits, HVAC systems, switchboard mains and feeders, and in any facility where frequent high‑inrush or fault‑current events occur. If you operate a manufacturing plant, commercial building, or critical infrastructure site where equipment uptime and safety cannot be compromised, this is an excellent choice for protecting your investment and maintaining system performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003cdiv\u003e\n\u003cblockquote\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eUse of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. All trademarks and registered trademarks are the property of their respective owners.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mersen","offers":[{"title":"New In Box","offer_id":50459178959147,"sku":"FLNR125-ID","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459178991915,"sku":"FLNR125-ID  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0758\/1995\/files\/FLNR200IDcopy.png?v=1744755412","url":"https:\/\/store.circuitbreakersuperstore.com\/products\/flnr125-id","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}