{"product_id":"a4j45","title":"A4J45 - 45 Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eA4J45 - 45 Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mersen A4J45 Amp-Trap® Class J fuse is designed for electrical systems that need fast, dependable protection when overloads or short circuits happen. Rated at 45 amps, this fast-acting fuse helps protect circuits and connected equipment by interrupting fault current before it can cause more serious damage. In commercial and industrial environments where downtime can affect productivity and repair costs add up quickly, reliable overcurrent protection is an important part of keeping systems running safely.\u003c\/p\u003e\n\u003cp\u003eThe A4J45 responds quickly during fault conditions to help reduce stress on motors, control panels, HVAC equipment, lighting systems, and other electrical components. Its current-limiting design helps lower the amount of fault energy moving through the system, which can help you reduce equipment damage and improve overall system protection.\u003c\/p\u003e\n\u003cp\u003eThis fuse also features a Class J rejection-style design that helps prevent incorrect replacement with lower-rated fuses. That added protection can help you support safer maintenance practices and more reliable electrical system performance. The ferrule-style terminals provide secure installation in compatible fuse holders, while the PolyTube body is designed for long-term use in demanding operating environments.\u003c\/p\u003e\n\u003cp\u003eWith a 600VAC \/ 300VDC rating and a high 200 kA interrupting capacity, the Mersen A4J45 is commonly used in branch circuits, industrial equipment, OEM machinery, power distribution systems, and commercial electrical applications where fast fault interruption is important.\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\u003e45 amp Class J fast-acting fuse:\u003c\/strong\u003e Designed for dependable overcurrent protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelps protect equipment from overloads and short circuits:\u003c\/strong\u003e Supports reliable circuit protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast response:\u003c\/strong\u003e Helps reduce damage during fault conditions.\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\u003eClass J construction:\u003c\/strong\u003e Helps prevent incorrect fuse replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh 200 kA interrupting rating:\u003c\/strong\u003e Designed for demanding fault-current conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for AC and DC applications:\u003c\/strong\u003e Supports commercial and industrial electrical systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerrule terminal design:\u003c\/strong\u003e Provides secure installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin-plated copper terminals:\u003c\/strong\u003e Provide reliable conductivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable PolyTube body:\u003c\/strong\u003e Designed for industrial and commercial environments.\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 A4J45\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\u003eAmp Rating:\u003c\/strong\u003e 45A\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 27 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Length:\u003c\/strong\u003e 60.5 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 0.0771 kg\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\/EAN:\u003c\/strong\u003e 782001960230\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\u003e\n\u003cstrong\u003eSuitable for industrial and commercial electrical systems:\u003c\/strong\u003e 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 A4J45 works well in industrial control panels, HVAC systems, branch circuits, lighting systems, motor control applications, OEM equipment, and electrical distribution systems where fast overcurrent protection is needed. It is especially useful in applications with sensitive electrical components that require quick interruption during overloads and short-circuit conditions to help reduce downtime and 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":50459154972971,"sku":"A4J45","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459155005739,"sku":"A4J45  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/a4j45","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}