{"product_id":"mersen-a4bq4000-class-l-time-delay-fuse-4000a-600vac-amp-trap-2000®-blade-fuse","title":"Mersen A4BQ4000 Class L Time-Delay Fuse – 4000A – 600VAC – Amp-Trap 2000® Blade Fuse","description":"\u003cp data-start=\"110\" data-end=\"669\"\u003eThe Mersen A4BQ4000 is an ultra-high capacity Amp-Trap 2000® Class L time-delay fuse engineered for large-scale industrial, utility, and critical power distribution systems. Rated at 4000 Amps, this fuse provides time-delay performance to withstand high motor starting currents and transformer inrush while delivering rapid current-limiting protection under short-circuit conditions. With a voltage rating of 600VAC, it is designed for main service entrances, switchgear, and heavy-duty feeder protection in high-energy electrical networks.\u003c\/p\u003e\n\u003ch3 data-section-id=\"yc43s8\" data-start=\"671\" data-end=\"693\"\u003eVoltage and Rating\u003c\/h3\u003e\n\u003cul data-start=\"695\" data-end=\"867\"\u003e\n\u003cli data-section-id=\"11vqopc\" data-start=\"695\" data-end=\"724\"\u003eCurrent Rating: 4000 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1t5slu\" data-start=\"725\" data-end=\"751\"\u003eVoltage Rating: 600VAC\u003c\/li\u003e\n\u003cli data-section-id=\"12sfb1r\" data-start=\"752\" data-end=\"775\"\u003eFrequency: 50\/60 Hz\u003c\/li\u003e\n\u003cli data-section-id=\"lh2u8s\" data-start=\"776\" data-end=\"799\"\u003eFuse Class: Class L\u003c\/li\u003e\n\u003cli data-section-id=\"1uahc1k\" data-start=\"800\" data-end=\"843\"\u003eFuse Type: Time-Delay, Current-Limiting\u003c\/li\u003e\n\u003cli data-section-id=\"1yv1qsz\" data-start=\"844\" data-end=\"867\"\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"869\" data-end=\"891\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"893\" data-end=\"1156\"\u003e\n\u003cli data-section-id=\"1auomsb\" data-start=\"893\" data-end=\"932\"\u003eProduct Type: Industrial Power Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"1n6zvlu\" data-start=\"933\" data-end=\"964\"\u003eSeries: Amp-Trap 2000® A4BQ\u003c\/li\u003e\n\u003cli data-section-id=\"1r43bc3\" data-start=\"965\" data-end=\"990\"\u003ePart Number: A4BQ4000\u003c\/li\u003e\n\u003cli data-section-id=\"1rqx052\" data-start=\"991\" data-end=\"1032\"\u003eManufacturer: Mersen \/ Ferraz Shawmut\u003c\/li\u003e\n\u003cli data-section-id=\"jpwrkx\" data-start=\"1033\" data-end=\"1058\"\u003eMounting Style: Blade\u003c\/li\u003e\n\u003cli data-section-id=\"p9w8f\" data-start=\"1059\" data-end=\"1130\"\u003eTime-Delay Capability: Yes (motor and transformer inrush tolerance)\u003c\/li\u003e\n\u003cli data-section-id=\"1ozdgpy\" data-start=\"1131\" data-end=\"1156\"\u003eCurrent Limiting: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"nucr17\" data-start=\"1158\" data-end=\"1186\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-start=\"1188\" data-end=\"1665\"\u003e\n\u003cli data-section-id=\"1qu4uul\" data-start=\"1188\" data-end=\"1249\"\u003eProtection Type: Overcurrent and short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"u3w5qr\" data-start=\"1250\" data-end=\"1380\"\u003eApplication Suitability: Main service protection, large feeders, transformers, switchgear, and industrial distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"1lds084\" data-start=\"1381\" data-end=\"1458\"\u003eCoordination Type: Selective coordination for high fault current networks\u003c\/li\u003e\n\u003cli data-section-id=\"petco\" data-start=\"1459\" data-end=\"1579\"\u003eConstruction Features: Very high interrupting capacity, low let-through energy, robust industrial-grade construction\u003c\/li\u003e\n\u003cli data-section-id=\"6473v9\" data-start=\"1580\" data-end=\"1665\"\u003eSystem Integration: Designed for utility-scale and heavy industrial power systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"nr5bwx\" data-start=\"1667\" data-end=\"1694\"\u003eStandards and Approvals\u003c\/h3\u003e\n\u003cul data-start=\"1696\" data-end=\"1813\"\u003e\n\u003cli data-section-id=\"11a7gqd\" data-start=\"1696\" data-end=\"1709\"\u003eUL Listed\u003c\/li\u003e\n\u003cli data-section-id=\"1ygh62h\" data-start=\"1710\" data-end=\"1727\"\u003eCSA Certified\u003c\/li\u003e\n\u003cli data-section-id=\"rq6oc9\" data-start=\"1728\" data-end=\"1794\"\u003eCompliant with Class L high-capacity fuse protection standards\u003c\/li\u003e\n\u003cli data-section-id=\"4g87nq\" data-start=\"1795\" data-end=\"1813\"\u003eRoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"1815\" data-end=\"1831\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"1833\" data-end=\"1953\"\u003e\n\u003cli data-section-id=\"1rqx052\" data-start=\"1833\" data-end=\"1874\"\u003eManufacturer: Mersen \/ Ferraz Shawmut\u003c\/li\u003e\n\u003cli data-section-id=\"8n4nj8\" data-start=\"1875\" data-end=\"1901\"\u003eSeries: Amp-Trap 2000®\u003c\/li\u003e\n\u003cli data-section-id=\"1r43bc3\" data-start=\"1902\" data-end=\"1927\"\u003ePart Number: A4BQ4000\u003c\/li\u003e\n\u003cli data-section-id=\"1m5zues\" data-start=\"1928\" data-end=\"1953\"\u003eEAN\/UPC: 782001930172\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"1955\" data-end=\"1971\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"1973\" data-end=\"2300\"\u003e\n\u003cli data-section-id=\"1ofc6uh\" data-start=\"1973\" data-end=\"2017\"\u003eUtility-scale power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"1nu7gvt\" data-start=\"2018\" data-end=\"2065\"\u003eIndustrial main service entrance protection\u003c\/li\u003e\n\u003cli data-section-id=\"ovbe5m\" data-start=\"2066\" data-end=\"2098\"\u003eLarge transformer protection\u003c\/li\u003e\n\u003cli data-section-id=\"evlcg8\" data-start=\"2099\" data-end=\"2129\"\u003eHeavy-duty feeder circuits\u003c\/li\u003e\n\u003cli data-section-id=\"utzpw7\" data-start=\"2130\" data-end=\"2171\"\u003eSwitchgear and switchboard assemblies\u003c\/li\u003e\n\u003cli data-section-id=\"idmerf\" data-start=\"2172\" data-end=\"2218\"\u003eCritical infrastructure electrical systems\u003c\/li\u003e\n\u003cli data-section-id=\"1vnrfac\" data-start=\"2219\" data-end=\"2254\"\u003eHigh fault current environments\u003c\/li\u003e\n\u003cli data-section-id=\"or6urc\" data-start=\"2255\" data-end=\"2300\"\u003eLarge manufacturing and energy facilities\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mersen","offers":[{"title":"NEW","offer_id":48494008795385,"sku":"A4BQ4000","price":1637.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/PHP-A4BQ4000-Mersen-TIMG_jpg.webp?v=1780835430","url":"https:\/\/mycircuitbreakers.com\/products\/mersen-a4bq4000-class-l-time-delay-fuse-4000a-600vac-amp-trap-2000%c2%ae-blade-fuse","provider":"My Circuit Breakers","version":"1.0","type":"link"}