{"product_id":"frn-r-400","title":"FRN-R-400 - 400Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFRN-R-400 - 400Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe FRN‑R‑400 400 Amp fuse from the trusted Fusetron line delivers high‑performance protection for demanding industrial electrical systems. With a 400 A rating, 250 VAC \/ 125 VDC voltage capacity, and Class RK5 classification, this dual‑element time‑delay fuse is designed to handle both sustained overloads and short‑circuit events. Its current‑limiting construction greatly reduces destructive fault energy, helping protect downstream components and reduce unplanned downtime in mission‑critical installations.\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 Design:\u003c\/strong\u003e Combines overload delay and short‑circuit protection in one compact unit, making system design simpler and safer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent‑Limiting Action:\u003c\/strong\u003e Minimizes the let‑through energy (I²t) during fault events—this means less stress on equipment and a lower risk of arc‑flash incidents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Ratings for Industrial Use:\u003c\/strong\u003e With a 400 A current rating and 250 VAC \/ 125 VDC voltage capacity, it’s built to handle heavy‑duty applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Compliance:\u003c\/strong\u003e CE‑marked and in line with key UL and CSA standards, so you can rely on it in a variety of geographic and regulatory environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade‑end Connections:\u003c\/strong\u003e Easy to install with blade‑end x blade‑end configuration—ideal for motor control centers, switchboards, and automation panels.\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 FRN‑R‑400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 051712507530\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 5027590060813\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 400 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\n\u003cul\u003e\n\u003cli\u003e200 kA (AC)\u003c\/li\u003e\n\u003cli\u003e20 kA (DC)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResponse Time:\u003c\/strong\u003e ~10 seconds at 500% overload\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e RK5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Blade end × Blade end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicator Type:\u003c\/strong\u003e Non‑indicating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 8.63″\u003c\/li\u003e\n\u003cli\u003eWidth: 2.06″\u003c\/li\u003e\n\u003cli\u003eHeight: 2.06″\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.6 lbs\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\u003eCE Marked:\u003c\/strong\u003e Confirms conformance with European safety and environmental health standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL and CSA:\u003c\/strong\u003e Designed according to UL and CSA regulations, assuring its suitability and reliability in North American industrial settings.\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\u003eChoose the FRN‑R‑400 for heavy‑duty electrical protection in environments such as motor control centers, HVAC systems, factory automation panels, and switchboards. Whenever you need dependable safeguarding of high‑power circuits—reducing equipment damage, lessening downtime, and improving safety—this fuse is the right solution for professionals who demand performance and reliability.\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":50459190690091,"sku":"FRN-R-400","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459190722859,"sku":"FRN-R-400  [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-400","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}