{"product_id":"frn-r-250","title":"FRN-R-250 - 250Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFRN-R-250 - 250Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe FRN‑R‑250 from the trusted Bussmann by Eaton family is a high‑capacity 250 amp, dual‑element, time‑delay fuse engineered for heavy‑duty electrical systems. With current‑limiting performance and a 250 V AC \/ 125 V DC rating, this Class RK5 fuse delivers dependable protection for industrial power distribution, large motor circuits, and transformer feeds. Its blade‑end mounting makes installation fast and secure, and its design helps reduce let‑through energy during fault conditions, minimizing stress on downstream equipment and improving system reliability.\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\u003eDual‑element time‑delay design:\u003c\/strong\u003e accommodates motor start‑up and temporary overloads without nuisance blowing, while still protecting against sustained overcurrent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent‑limiting technology:\u003c\/strong\u003e limits the energy that passes through during a fault, reducing damage to connected equipment and improving system safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade‑end mounting:\u003c\/strong\u003e ensures a secure, tool‑free fit into compatible RK5 fuse holders, simplifying replacement and maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven legacy:\u003c\/strong\u003e part of the Bussmann\/Eaton Class RK5 family, trusted in large‑scale commercial and industrial installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelective coordination friendly:\u003c\/strong\u003e streamlines selective protection strategy, helping isolate faults and maintain uptime.\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\u003eAmperage rating:\u003c\/strong\u003e 250 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 250 VAC \/ 125 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting rating:\u003c\/strong\u003e 200 kA (RMS Sym) @ 250 VAC; 20 kA @ 125 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResponse:\u003c\/strong\u003e Minimum 10-second time delay at 500% of rated current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection type:\u003c\/strong\u003e Blade‑end x blade‑end (for tool‑free mounting)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate weight:\u003c\/strong\u003e 0.896 lb\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"\u003e\u003cstrong\u003eBody size:\u003c\/strong\u003e Typical lengths and dimensions per datasheet for 225‑600 A range; consult the manufacturer's spec sheet for full dimensions.\u003c\/span\u003e\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\u003cstrong\u003eUL Listed to UL 248‑12 standard, Class RK5.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCSA Certified to C22.2 No. 248.12.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCE marked for compliance with relevant European directives.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCurrent‑limiting design meets rigorous industrial performance benchmarks for both overload and short‑circuit protection.\u003c\/strong\u003e\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\u003eThis fuse is ideal for large motors, switchgear, industrial HVAC systems, and power distribution panels where high‑capacity overload protection is critical. If you’re managing a commercial or industrial facility with significant inrush currents or heavy‑duty motor loads, the FRN‑R‑250 is a strong fit. It helps ensure reliable operation, limits downstream damage in fault events, and supports maintenance‑friendly installations.\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":50459190133035,"sku":"FRN-R-250","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459190165803,"sku":"FRN-R-250  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0758\/1995\/files\/FRNR400copy.png?v=1745357095","url":"https:\/\/store.circuitbreakersuperstore.com\/products\/frn-r-250","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}