{"product_id":"mersen-ajt300-fuse-class-j-300a-600vac-500vdc-time-delay-blade-fuse-amp-trap-2000®-ajt","title":"Mersen AJT300 Fuse – Class J – 300A – 600VAC\/500VDC – Time-Delay Blade Fuse (Amp-Trap 2000® AJT)","description":"\u003cp data-start=\"153\" data-end=\"737\"\u003eThe \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eMersen\u003c\/span\u003e\u003c\/span\u003e AJT300 is a Class J time-delay fuse designed for high-reliability protection in industrial and commercial power distribution systems. Rated at 300 Amps, this Amp-Trap 2000® fuse provides controlled time-delay performance, allowing it to withstand temporary inrush currents while still delivering fast and safe interruption during short-circuit conditions. With voltage ratings of 600VAC and 500VDC, it is suitable for AC and DC systems requiring high interrupting capacity, selective coordination, and compact installation.\u003c\/p\u003e\n\u003ch3 data-section-id=\"yc43s8\" data-start=\"739\" data-end=\"761\"\u003eVoltage and Rating\u003c\/h3\u003e\n\u003cul data-start=\"763\" data-end=\"916\"\u003e\n\u003cli data-section-id=\"abelif\" data-start=\"763\" data-end=\"791\"\u003eCurrent Rating: 300 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1jrwfrt\" data-start=\"792\" data-end=\"827\"\u003eVoltage Rating: 600VAC \/ 500VDC\u003c\/li\u003e\n\u003cli data-section-id=\"12sfb1r\" data-start=\"828\" data-end=\"851\"\u003eFrequency: 50\/60 Hz\u003c\/li\u003e\n\u003cli data-section-id=\"lh2ska\" data-start=\"852\" data-end=\"875\"\u003eFuse Class: Class J\u003c\/li\u003e\n\u003cli data-section-id=\"4myp57\" data-start=\"876\" data-end=\"916\"\u003eFuse Type: Time-Delay (Dual-Element)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"918\" data-end=\"940\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"942\" data-end=\"1239\"\u003e\n\u003cli data-section-id=\"1g99695\" data-start=\"942\" data-end=\"986\"\u003eProduct Type: Industrial Time-Delay Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"107qxqz\" data-start=\"987\" data-end=\"1017\"\u003eSeries: Amp-Trap 2000® AJT\u003c\/li\u003e\n\u003cli data-section-id=\"1433699\" data-start=\"1018\" data-end=\"1041\"\u003ePart Number: AJT300\u003c\/li\u003e\n\u003cli data-section-id=\"65a2sf\" data-start=\"1042\" data-end=\"1097\"\u003eManufacturer: \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eMersen\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jpwrkx\" data-start=\"1098\" data-end=\"1123\"\u003eMounting Style: Blade\u003c\/li\u003e\n\u003cli data-section-id=\"1xmrvyb\" data-start=\"1124\" data-end=\"1192\"\u003eResponse Type: Time-delay for motor and inrush current tolerance\u003c\/li\u003e\n\u003cli data-section-id=\"1qlxhwq\" data-start=\"1193\" data-end=\"1239\"\u003eIndicator: SmartSpot® blown-fuse indicator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"nucr17\" data-start=\"1241\" data-end=\"1269\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-start=\"1271\" data-end=\"1748\"\u003e\n\u003cli data-section-id=\"1ey55ch\" data-start=\"1271\" data-end=\"1356\"\u003eProtection Type: Overcurrent and short-circuit protection for industrial circuits\u003c\/li\u003e\n\u003cli data-section-id=\"upex6v\" data-start=\"1357\" data-end=\"1455\"\u003eApplication Suitability: Motor circuits, transformers, feeders, and power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"14hu3i9\" data-start=\"1456\" data-end=\"1549\"\u003eCoordination Type: Designed for selective coordination with downstream protective devices\u003c\/li\u003e\n\u003cli data-section-id=\"1fubvwr\" data-start=\"1550\" data-end=\"1666\"\u003eConstruction Features: High interrupting capacity, current-limiting design, and controlled delay characteristics\u003c\/li\u003e\n\u003cli data-section-id=\"1ad6lq8\" data-start=\"1667\" data-end=\"1748\"\u003eSystem Integration: Suitable for AC and DC systems up to rated voltage limits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"nr5bwx\" data-start=\"1750\" data-end=\"1777\"\u003eStandards and Approvals\u003c\/h3\u003e\n\u003cul data-start=\"1779\" data-end=\"1916\"\u003e\n\u003cli data-section-id=\"11a7gqd\" data-start=\"1779\" data-end=\"1792\"\u003eUL Listed\u003c\/li\u003e\n\u003cli data-section-id=\"1ygh62h\" data-start=\"1793\" data-end=\"1810\"\u003eCSA Certified\u003c\/li\u003e\n\u003cli data-section-id=\"luxhx6\" data-start=\"1811\" data-end=\"1846\"\u003eClass J fuse standard compliant\u003c\/li\u003e\n\u003cli data-section-id=\"1pnqzgh\" data-start=\"1847\" data-end=\"1916\"\u003eIEC equivalent industrial protection standards (where applicable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"1918\" data-end=\"1934\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"1936\" data-end=\"2072\"\u003e\n\u003cli data-section-id=\"8qge4f\" data-start=\"1936\" data-end=\"1991\"\u003eManufacturer: \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eMersen\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"107qxqz\" data-start=\"1992\" data-end=\"2022\"\u003eSeries: Amp-Trap 2000® AJT\u003c\/li\u003e\n\u003cli data-section-id=\"1433699\" data-start=\"2023\" data-end=\"2046\"\u003ePart Number: AJT300\u003c\/li\u003e\n\u003cli data-section-id=\"1hqgbrk\" data-start=\"2047\" data-end=\"2072\"\u003eEAN\/UPC: 782001962241\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"2074\" data-end=\"2090\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"2092\" data-end=\"2413\"\u003e\n\u003cli data-section-id=\"18xv2zo\" data-start=\"2092\" data-end=\"2124\"\u003eMotor control centers (MCCs)\u003c\/li\u003e\n\u003cli data-section-id=\"1g63lej\" data-start=\"2125\" data-end=\"2166\"\u003eIndustrial power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"13cmzo7\" data-start=\"2167\" data-end=\"2193\"\u003eTransformer protection\u003c\/li\u003e\n\u003cli data-section-id=\"t0h0e6\" data-start=\"2194\" data-end=\"2229\"\u003eFeeder circuits and sub-feeders\u003c\/li\u003e\n\u003cli data-section-id=\"1wibwmd\" data-start=\"2230\" data-end=\"2246\"\u003eHVAC systems\u003c\/li\u003e\n\u003cli data-section-id=\"svguz\" data-start=\"2247\" data-end=\"2295\"\u003ePumps, compressors, and heavy-duty machinery\u003c\/li\u003e\n\u003cli data-section-id=\"gsty6o\" data-start=\"2296\" data-end=\"2339\"\u003eCommercial and industrial installations\u003c\/li\u003e\n\u003cli data-section-id=\"ouxf1r\" data-start=\"2340\" data-end=\"2413\"\u003eSystems requiring inrush current tolerance with high fault protection\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mersen","offers":[{"title":"NEW","offer_id":48494290403577,"sku":"AJT300","price":168.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/PHP-AJT300-Mersen-TIMG_jpg.webp?v=1780845617","url":"https:\/\/mycircuitbreakers.com\/products\/mersen-ajt300-fuse-class-j-300a-600vac-500vdc-time-delay-blade-fuse-amp-trap-2000%c2%ae-ajt","provider":"My Circuit Breakers","version":"1.0","type":"link"}