{"product_id":"sql50a-3-phase-diode-bridge-rectifier-50a-1200v-aluminum-case","title":"SQL50A 3-Phase Diode Bridge Rectifier — 50A 1200V Aluminum Case","description":"\u003ch2\u003eSQL50A — 50A 1200V 3-Phase Diode Bridge Rectifier\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSQL50A\u003c\/strong\u003e is a high-current \u003cstrong\u003e3-phase diode bridge rectifier module\u003c\/strong\u003e rated at \u003cstrong\u003e50A continuous current\u003c\/strong\u003e and \u003cstrong\u003e1200V peak reverse voltage\u003c\/strong\u003e. Housed in a robust \u003cstrong\u003ealuminum metal case\u003c\/strong\u003e with bolt-down mounting, it converts 3-phase AC power to DC with high efficiency — essential for industrial motor drives, welding equipment, UPS systems, and high-power DC power supplies.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eSQL50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003e3-Phase Bridge Rectifier (6-diode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage Output Current (I\u003csub\u003eO\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Reverse Voltage (V\u003csub\u003eRRM\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e1200V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Voltage Drop (V\u003csub\u003eF\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e~1.1V per diode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Current (I\u003csub\u003eFSM\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e500A (8.3ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eAluminum metal case (bolt-down)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eScrew terminal + bolt-down to heatsink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +150°C (junction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew, Original\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose SQL50A?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50A continuous rating\u003c\/strong\u003e — handles high-current industrial loads without derating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1200V V\u003csub\u003eRRM\u003c\/sub\u003e\u003c\/strong\u003e — safe margin for 3-phase 380V\/480V mains applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum case\u003c\/strong\u003e — direct bolt-down to heatsink for efficient thermal management\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500A surge capability\u003c\/strong\u003e — withstands inrush current from capacitive loads and motor starts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew terminals\u003c\/strong\u003e — secure, vibration-resistant connections for industrial environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-phase input\u003c\/strong\u003e — lower ripple and higher efficiency vs single-phase rectification\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial motor drives (VFD)\u003c\/strong\u003e — 3-phase AC to DC bus conversion for variable frequency drives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelding machines\u003c\/strong\u003e — high-current DC rectification for MIG, TIG, and stick welders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPS systems\u003c\/strong\u003e — 3-phase input rectifier for uninterruptible power supplies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-power DC power supplies\u003c\/strong\u003e — industrial bench supplies and battery chargers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectroplating equipment\u003c\/strong\u003e — high-current DC for electrochemical processes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC machine power stages\u003c\/strong\u003e — servo drive and spindle motor power conversion\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eMount the SQL50A directly to an \u003cstrong\u003ealuminum heatsink\u003c\/strong\u003e using thermal compound for optimal heat dissipation. At full 50A load, a heatsink with thermal resistance ≤0.5°C\/W is recommended. Use M5 or M6 bolts for secure mounting. Connect 3-phase AC inputs to terminals marked \u003cstrong\u003e~\u003c\/strong\u003e (or A, B, C) and DC output from \u003cstrong\u003e+\u003c\/strong\u003e and \u003cstrong\u003e−\u003c\/strong\u003e terminals.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What 3-phase voltage can SQL50A handle?\u003c\/strong\u003e\u003cbr\u003eA: With 1200V V\u003csub\u003eRRM\u003c\/sub\u003e, it safely handles 3-phase 380V (peak ~537V) and 480V (peak ~679V) mains with adequate safety margin.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does SQL50A require a heatsink?\u003c\/strong\u003e\u003cbr\u003eA: Yes. At currents above 10–15A, a heatsink is required to keep junction temperature within safe limits. The aluminum case facilitates direct heatsink mounting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the ripple frequency of the output?\u003c\/strong\u003e\u003cbr\u003eA: 3-phase bridge rectification produces 6× line frequency ripple (300Hz for 50Hz mains, 360Hz for 60Hz mains) — much lower ripple than single-phase designs.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× SQL50A 3-Phase Diode Bridge Rectifier Module (aluminum case)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991472492779,"sku":"\u003cnone\u003e","price":14.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/50a-1200v-3-phase-diode-bridge-rectifier-sql50a.webp?v=1761632029","url":"https:\/\/keszoox.com\/products\/sql50a-3-phase-diode-bridge-rectifier-50a-1200v-aluminum-case","provider":"Keszoox","version":"1.0","type":"link"}