{"product_id":"a4j250","title":"A4J250 - 250 Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eA4J250 - 250 Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProtecting critical electrical equipment starts with choosing the right fuse, and the Mersen A4J250 Amp-Trap® Class J Fast-Acting Fuse is built for exactly that purpose. Designed for demanding commercial and industrial environments, this 250A fuse reacts quickly to overloads and short circuits before they can cause costly damage to electrical systems. Whether you’re maintaining a power distribution panel, upgrading motor protection, or servicing industrial equipment, the A4J250 delivers the fast-acting performance and current-limiting protection professionals count on to keep your operations running safely and efficiently.\u003c\/p\u003e\n\u003cp\u003ePart of Mersen’s trusted Amp-Trap® A4J series, the A4J250 combines high interrupting capacity with a compact Class J footprint, helping reduce the risk of installing incorrect replacement fuses with lower performance ratings. Its fast response time helps protect sensitive components from excessive fault current, reducing downtime and helping extend the life of connected equipment. Rated for 600VAC and 300VDC applications, this fuse is suitable for a wide range of AC and DC electrical systems commonly found in manufacturing facilities, commercial buildings, HVAC systems, control panels, and heavy-duty industrial applications.\u003c\/p\u003e\n\u003cp\u003eBuilt with durable GMG insulating material and brass alloy blade terminals, the A4J250 is engineered for dependable long-term performance in challenging environments. With a 200 kA interrupting rating, it’s capable of handling high fault-current conditions while maintaining reliable circuit protection where it matters most. For electricians, facility managers, and maintenance professionals looking for dependable overcurrent protection, the Mersen A4J250 offers the combination of safety, speed, and performance modern electrical systems demand.\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\u003eFast-acting Class J fuse:\u003c\/strong\u003e Designed for rapid fault interruption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250A ampere rating:\u003c\/strong\u003e Suitable for demanding industrial and commercial applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600VAC and 300VDC ratings:\u003c\/strong\u003e Support both AC and DC systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced current-limiting protection:\u003c\/strong\u003e Helps minimize equipment damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh 200 kA interrupting rating:\u003c\/strong\u003e Suitable for challenging fault-current conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Class J design:\u003c\/strong\u003e Helps prevent incorrect fuse replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass alloy blade terminals:\u003c\/strong\u003e Provide secure electrical connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelps reduce downtime and improve electrical system reliability:\u003c\/strong\u003e Supports dependable system performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for protecting sensitive electrical and power distribution equipment:\u003c\/strong\u003e Suitable for commercial and industrial electrical systems.\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 A4J250\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Amp-Trap® A4J\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e Class J\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Type:\u003c\/strong\u003e Fast-Acting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmpere Rating:\u003c\/strong\u003e 250A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Voltage AC:\u003c\/strong\u003e 600VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Voltage DC:\u003c\/strong\u003e 300VDC\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\u003eMounting Type:\u003c\/strong\u003e Clip\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Blade\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Material:\u003c\/strong\u003e Brass Alloy\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulating Material:\u003c\/strong\u003e GMG\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Diameter:\u003c\/strong\u003e 54 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Length:\u003c\/strong\u003e 181.1 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 0.7938 kg\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\u003e\n\u003cstrong\u003eROHS Compliant:\u003c\/strong\u003e Designed to support environmental compliance requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Voltage UL\/CSA Applications:\u003c\/strong\u003e Designed for Low Voltage UL\/CSA fuse 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\u003cul\u003e\n\u003cli\u003eThe Mersen A4J250 is commonly used in power distribution systems, motor control centers (MCCs), industrial machinery and automation equipment, HVAC and refrigeration systems, commercial electrical panels, manufacturing facilities, branch circuit protection, and control panels and switchgear applications.\u003cbr\u003e\n\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\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":50459154448683,"sku":"A4J250","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459154481451,"sku":"A4J250  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/a4j250","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}