{"product_id":"a2k400r","title":"A2K400R - 400Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eA2K400R - 400Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen electrical systems are exposed to high fault currents, dependable circuit protection becomes critical. The Mersen A2K400R Amp-Trap® Class RK1 Fast-Acting Fuse is built to help keep industrial and commercial power systems running safely and efficiently by reacting quickly to overloads and short circuits before costly damage can occur. Designed for demanding branch and feeder circuit applications, this 400A fast-acting fuse delivers advanced current-limiting protection that helps reduce stress on connected equipment while improving overall system reliability.\u003c\/p\u003e\n\u003cp\u003eBuilt with durability and performance in mind, the A2K400R features a compact blade-style design with tin-plated copper terminals for solid electrical connections and dependable conductivity. Its rugged PolyTube insulating body stands up well in challenging environments often found in manufacturing plants, power distribution systems, and commercial facilities. Because it is rated for both 250VAC and 250VDC applications, this fuse gives maintenance teams and electrical professionals added flexibility across a wide range of installations.\u003c\/p\u003e\n\u003cp\u003eWhether you are protecting switchboards, panelboards, motor control centers, or other critical electrical infrastructure, the Mersen A2K400R fuse provides the fast response and high interrupting capacity needed to help minimize downtime and protect valuable equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast-acting Class RK1 fuse engineered for rapid overload and short-circuit response\u003c\/li\u003e\n\u003cli\u003eCurrent-limiting protection helps reduce potential damage to downstream electrical equipment\u003c\/li\u003e\n\u003cli\u003eRated for both 250VAC and 250VDC systems for versatile installation options\u003c\/li\u003e\n\u003cli\u003eHigh 200 kA interrupting rating supports applications with elevated available fault currents\u003c\/li\u003e\n\u003cli\u003eBlade terminal construction with tin-plated copper connections promotes reliable conductivity\u003c\/li\u003e\n\u003cli\u003eExcellent choice for branch circuit, feeder circuit, and backup protection applications\u003c\/li\u003e\n\u003cli\u003ePolyTube insulating body offers dependable durability in demanding operating conditions\u003c\/li\u003e\n\u003cli\u003eRoHS compliant materials support modern environmental and compliance standards\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Mersen\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e A2K400R\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Amp-Trap® Fuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e Class RK1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed\/Characteristic:\u003c\/strong\u003e Fast-Acting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmpere Rating:\u003c\/strong\u003e 400A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating AC:\u003c\/strong\u003e 250VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating DC:\u003c\/strong\u003e 250VDC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50\/60 Hz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating:\u003c\/strong\u003e 200 kA AC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Blade\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Material:\u003c\/strong\u003e Tin-Plated Copper\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Clip\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e PolyTube\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Length:\u003c\/strong\u003e 219.2 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Diameter:\u003c\/strong\u003e 52.4 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 0.762 kg\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e RoHS Compliant\u003cbr\u003e\n\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\u003eThe Mersen A2K400R fuse is RoHS compliant, making it suitable for facilities and projects that require environmentally conscious material standards. Manufactured using quality insulating and conductive materials, including a PolyTube body and tin-plated copper terminals, this fuse is designed to deliver dependable electrical performance and long service life in industrial and commercial applications.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIt is commonly used in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial power distribution systems\u003c\/li\u003e\n\u003cli\u003eSwitchboards and panelboards\u003c\/li\u003e\n\u003cli\u003eMotor control centers\u003c\/li\u003e\n\u003cli\u003eBranch and feeder circuit protection\u003c\/li\u003e\n\u003cli\u003eBackup protection for electrical equipment\u003c\/li\u003e\n\u003cli\u003eManufacturing and processing facilities\u003c\/li\u003e\n\u003cli\u003eCommercial electrical infrastructure\u003c\/li\u003e\n\u003cli\u003eHeavy-duty power distribution equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\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.\u003cstrong\u003e CIRCUIT BREAKER SUPERSTORE®\u003c\/strong\u003e is an independent reseller and is \u003cstrong\u003enot \u003c\/strong\u003ean authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do \u003cstrong\u003enot\u003c\/strong\u003e apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eMersen® is a registered trademark of Mersen S.A. Products sold are surplus, used, or refurbished and are \u003cstrong\u003eNOT \u003c\/strong\u003esupplied by Mersen S.A. or its affiliates.\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":50459147206955,"sku":"A2K400R","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459147239723,"sku":"A2K400R  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/a2k400r","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}