{"product_id":"bussmann-170m4209-fuses","title":"Eaton (Bussmann) 170M4209 — 170M Series High‑Speed Square‑Body Fuse, 250 A, 690 V AC (700 V UL), aR Semiconductor Protection, Fuse Size 1, Top Status Indicator (TN\/110) — Pack of 3","description":"\u003cp\u003eThe Eaton (Bussmann) 170M4209 is a high‑speed square‑body fuse engineered for semiconductor and power‑electronic protection. Rated 250 A and 690 V AC (700 V per UL), with aR utilization for semiconductor protection and a top fuse status indicator (TN\/110 Type T) for blown‑fuse signaling, this Fuse Size 1 unit provides high interrupting capability and reliable clearing in demanding industrial applications. Supplied as a pack of 3.\u003c\/p\u003e\n\u003cp\u003eKey specifications\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Eaton (Bussmann)\u003c\/li\u003e\n\u003cli\u003eCatalog \/ Model: 170M4209 — FUSE 250A 690V 1TN\/110 AR UC\u003c\/li\u003e\n\u003cli\u003eProduct type: High‑speed square‑body fuse (DIN 43653 style)\u003c\/li\u003e\n\u003cli\u003eAmpere rating: 250 A\u003c\/li\u003e\n\u003cli\u003eVoltage rating: 690 V AC (IEC); 700 V (UL)\u003c\/li\u003e\n\u003cli\u003eInterrupting \/ Breaking capacity: 200 kA (200 kAIC)\u003c\/li\u003e\n\u003cli\u003eUtilization category: aR (for semiconductor protection)\u003c\/li\u003e\n\u003cli\u003eFuse size \/ Construction size: 1\u003c\/li\u003e\n\u003cli\u003eFuse indicator: Top fuse status indicator (TN\/110 Type T)\u003c\/li\u003e\n\u003cli\u003eFuse shape \u0026amp; connection: Square body with slotted center bolted tags; blade end × blade end connection; center‑to‑center connection distance 108 mm; mounting dimension M10\u003c\/li\u003e\n\u003cli\u003eClearing (I2t): 42,000 A2s at 660 V (pre‑arc I2t: 155,000 A2s) — refer to datasheet for full time‑current characteristics\u003c\/li\u003e\n\u003cli\u003eWatt losses: 55 W (at rated current)\u003c\/li\u003e\n\u003cli\u003eInterrupt rating \/ Certification: IEC rated; UL recognized; CE marked; RoHS compliant\u003c\/li\u003e\n\u003cli\u003eWeight \u0026amp; dimensions (packaging dependent): Unit weight 162 g; product dimensions listed in manufacturer data\u003c\/li\u003e\n\u003cli\u003eTypical applications: Semiconductor protection, DC common bus, DC drives, power converters \/ rectifiers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFeatures \u0026amp; benefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eaR characteristic for fast clearing of faults in semiconductor devices and power converters.\u003c\/li\u003e\n\u003cli\u003eHigh 200 kA interrupting capability for heavy fault environments.\u003c\/li\u003e\n\u003cli\u003eIntegrated top status indicator (TN\/110) simplifies blown‑fuse detection and optional microswitch integration.\u003c\/li\u003e\n\u003cli\u003eRobust square‑body construction with bolted center tag for secure connections and reliable mechanical performance.\u003c\/li\u003e\n\u003cli\u003eEaton\/Bussmann quality standards and global certifications for industrial use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInstallation \u0026amp; handling notes\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFit into holders and fuse systems compliant with DIN 43653 and rated for 690 V AC fuse links.\u003c\/li\u003e\n\u003cli\u003eReplace only with identical Eaton 170M series aR fuses to maintain coordination and safety.\u003c\/li\u003e\n\u003cli\u003eObserve manufacturer guidance for torque on bolted tags (M10), conductor sizing and thermal considerations.\u003c\/li\u003e\n\u003cli\u003eConsult Eaton datasheet for complete time‑current curves and coordination examples.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOrdering \u0026amp; packaging\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePack of 3 (standard packaging). UPC: 051712258074. Non‑stocked\/lead time may apply; request delivery quote where required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv data-version=\"2.2.5\" data-event=\"v2\" id=\"whale-data-ext\"\u003e\u003c\/div\u003e","brand":"Bussmann","offers":[{"title":"Default Title","offer_id":47430361907479,"sku":"170M4209","price":250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/bussmann-170m4209-3pcs-bussmann-170m4209-fuses-1212531677.jpg?v=1766705978","url":"https:\/\/www.apexonsupply.com\/products\/bussmann-170m4209-fuses","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}