{"product_id":"a4j30","title":"A4J30 - 30 Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eA4J30 - 30 Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mersen A4J30 Amp-Trap® Class J Fast-Acting Fuse is built for your electrical systems that demand quick, dependable circuit protection in commercial and industrial environments. Rated at 30 amps, this fast-acting fuse responds rapidly to overloads and short circuits, helping you reduce the risk of damage to sensitive equipment and minimizing costly downtime. Its current-limiting design helps control fault energy before it can travel through the system, making it a smart choice for protecting motors, control panels, lighting circuits, HVAC equipment, and other critical power distribution components.\u003c\/p\u003e\n\u003cp\u003eWhat sets the A4J30 apart is its Class J construction, which uses unique physical dimensions to help prevent replacement with lower-rated fuses that may not provide the same level of protection. This added layer of safety is especially valuable in facilities where maintaining proper overcurrent protection is essential. With a high interrupting rating of 200 kA, the A4J30 is capable of handling demanding fault conditions often found in industrial electrical systems.\u003c\/p\u003e\n\u003cp\u003eDesigned with tin-plated copper ferrule terminals and a durable PolyTube body, the fuse offers reliable conductivity and dependable performance in everyday operating conditions. Whether you're installing it in new equipment or using it as a replacement fuse during maintenance, the A4J30 delivers the fast response and consistent protection that electrical professionals expect from the Mersen Amp-Trap® series.\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\u003e30 amp Class J fast-acting fuse:\u003c\/strong\u003e Designed for dependable overcurrent protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelps protect electrical systems from overloads and short circuits:\u003c\/strong\u003e Supports reliable circuit protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast response time:\u003c\/strong\u003e Helps reduce damage to sensitive equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent-limiting design:\u003c\/strong\u003e Helps lower fault energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnique Class J dimensions:\u003c\/strong\u003e Help prevent incorrect fuse substitution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated for 600VAC and 300VDC applications:\u003c\/strong\u003e Suitable for AC and DC electrical systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh 200 kA interrupting capacity:\u003c\/strong\u003e Designed for demanding environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerrule terminal design:\u003c\/strong\u003e Provides secure installation in compatible fuse holders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin-plated copper terminals:\u003c\/strong\u003e Provide dependable conductivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolyTube body:\u003c\/strong\u003e Designed for long service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for both AC and DC circuits:\u003c\/strong\u003e Supports commercial and industrial electrical applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eROHS compliant:\u003c\/strong\u003e Supports environmental compliance requirements.\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 A4J30\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\u003eProduct Type:\u003c\/strong\u003e Fast-Acting Fuse\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\u003eAmpere Rating:\u003c\/strong\u003e 30A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600VAC \/ 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\u003eCurrent Type:\u003c\/strong\u003e AC\/DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Clip\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Ferrule\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\u003eBody Material:\u003c\/strong\u003e PolyTube\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Diameter:\u003c\/strong\u003e 20.7 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Length:\u003c\/strong\u003e 57.2 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 0.044 kg\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 782001960186\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.\u003c\/li\u003e\n\u003cli\u003eSuitable for commercial and industrial electrical protection systems: Designed for dependable overcurrent protection.\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 A4J30 fuse is commonly used in industrial machinery, motor control centers, HVAC systems, lighting panels, control circuits, and power distribution equipment where fast overcurrent protection is important. It is especially effective in applications that include sensitive electrical components requiring quick interruption during fault conditions to help maintain system reliability and reduce equipment damage.\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":50459154579755,"sku":"A4J30","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459154612523,"sku":"A4J30  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/a4j30","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}