{"product_id":"a4by1800","title":"A4BY1800 - 1800Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eA4BY1800 - 1800Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMeet the Mersen A4BY1800 Amp-Trap® Class L Time-Delay Fuse—your go-to solution for keeping high-current electrical systems safe without compromising performance. Rated for 1800 amps, this fuse is built to handle heavy-duty service entrance equipment, feeder circuits, and circuit breakers. Its smart time-delay design lets it ride through harmless surges, like motor startups or temporary spikes, so you don’t get unnecessary trips—but it acts fast when a real fault occurs, protecting your equipment and minimizing downtime.\u003c\/p\u003e\n\u003cp\u003eIf you want protection that’s precise, dependable, and built for real-world performance, the A4BY1800 has you covered.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTime-delay design passes harmless surges without tripping\u003c\/li\u003e\n\u003cli\u003e1800A rating for heavy-duty service entrance and feeder circuits\u003c\/li\u003e\n\u003cli\u003eRated for 600VAC \/ 300VDC applications\u003c\/li\u003e\n\u003cli\u003eHigh 200kA AC interrupting capacity for fault clearing\u003c\/li\u003e\n\u003cli\u003eSilver-plated copper blade terminals for reliable connections\u003c\/li\u003e\n\u003cli\u003eClear markings simplify identification and servicing\u003c\/li\u003e\n\u003cli\u003eBolt-mounted installation for secure connections\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 A4BY1800\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e A4BY – Class L – Time-Delay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e Class L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmpere Rating:\u003c\/strong\u003e 1800A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600VAC \/ 300VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed\/Characteristic:\u003c\/strong\u003e Time-Delay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Blade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Material:\u003c\/strong\u003e Silver-Plated Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Max Interrupting Rating:\u003c\/strong\u003e 200kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e GMG (Glass Melamine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 88.9 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 273 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 3.8374 kg\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\u003eRoHS Compliant\u003c\/li\u003e\n\u003cli\u003eMeets UL\/CSA standards for low-voltage fuses\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 A4BY1800 shines in applications where high-current protection and surge tolerance are essential:\u003c\/li\u003e\n\u003cli\u003eService entrance panels\u003c\/li\u003e\n\u003cli\u003eFeeder circuits and distribution systems\u003c\/li\u003e\n\u003cli\u003eIndustrial machinery protection\u003c\/li\u003e\n\u003cli\u003eCommercial power distribution\u003c\/li\u003e\n\u003cli\u003eCircuit breakers in critical infrastructure\u003c\/li\u003e\n\u003cli\u003eFast, reliable, and built to last, the Mersen A4BY1800 is a fuse that keeps your electrical systems running safely and smoothly—exactly what you need in demanding industrial or commercial environments.\u003c\/li\u003e\n\u003c\/ul\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\u003eCIRCUIT BREAKER SUPERSTORE®\u003c\/strong\u003e is an independent reseller and is \u003cstrong\u003enot\u003c\/strong\u003e an 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":50459152384299,"sku":"A4BY1800","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459152417067,"sku":"A4BY1800  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/a4by1800","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}