{"product_id":"reliance-electric-78155-77a-heat-sink-assembly-ready-to-ship","title":"78155-77A | Reliance Electric Rectifier Stack Heat Sink Assembly","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe Reliance Electric 78155-77A is a heat sink unit designed for thermal management within rectifier stack assemblies used in industrial drive systems. This component dissipates heat from high-temperature devices to support stable electrical operation and protect associated rectifier components.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.9752%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eReliance Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eDrives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003e78155-77A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eHeat Sink for Drive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eRectifier Stack Heat Sink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eAssociated System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eReliance Electric Rectifier Stack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eMounting Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eFour-Center Hole Mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eIntegrated Components\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eMOV and Power Resistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eMOV Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eMetal Oxide Varistor (Wired)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eResistor Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003e63481-40AX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eResistor Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003e50 W, 30 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eConstruction Profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003eFlat Heat Sink with Extended Side Section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 32.4726%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.39%;\"\u003e0.99 lb (0.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About 78155-77A\u003c\/h4\u003e\n\u003cp\u003eThe 78155-77A is a heat sink assembly manufactured by Reliance Electric for use in industrial rectifier stack applications. Its primary role is to collect and dissipate heat generated by power conversion components operating under high electrical loads. The unit features a flat mounting surface with four central mounting holes and an extended section that supports additional electrical components mounted directly to the heat sink. Designed for integration into drive and rectifier systems, it supports thermal stability and long-term component reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRectifier stack thermal management: Designed specifically to dissipate heat from rectifier stack components used in industrial drive systems.\u003c\/li\u003e\n\u003cli\u003eIntegrated electrical components: Includes a mounted metal oxide varistor and a high-power resistor to support voltage suppression and energy dissipation.\u003c\/li\u003e\n\u003cli\u003eHigh-power resistor assembly: Fitted with a 50 W, 30 Ohm resistor (63481-40AX) mounted directly to the heat sink for effective thermal transfer.\u003c\/li\u003e\n\u003cli\u003eFlat mounting design: Features four central mounting holes to allow secure installation within rectifier and drive assemblies.\u003c\/li\u003e\n\u003cli\u003eExtended component surface: Side-mounted section provides a dedicated surface for electrical component attachment and heat conduction.\u003c\/li\u003e\n\u003cli\u003eIndustrial-grade construction: Built to withstand continuous operation and elevated temperatures in demanding industrial environments.\u003c\/li\u003e\n\u003cli\u003eCompatibility with legacy systems: Used in Reliance Electric and ABB-associated rectifier stack designs for drive applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 78155-77A delivers the reliability and precision required for effective heat dissipation and component protection in Reliance Electric industrial rectifier and drive systems.\u003c\/p\u003e","brand":"Reliance Electric","offers":[{"title":"Default Title","offer_id":48868637344042,"sku":"78155-77A","price":1256.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/reliance-electric-60888131-rectifier-stack-7815577a-used.jpg?v=1720272390","url":"https:\/\/iqelectro.com\/products\/reliance-electric-78155-77a-heat-sink-assembly-ready-to-ship","provider":"IQElectro","version":"1.0","type":"link"}