{"product_id":"abb-ss823-voting-unit-redundant-power-supply-control","title":"ABB SS823 Voting Unit Redundant Power Supply Control","description":"\u003ch2\u003e\u003cstrong\u003eABB SS823 Voting Unit for Redundant Power Systems\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #d35400;\"\u003eSS823\u003c\/strong\u003e is a critical control unit designed to manage and supervise redundant power supply configurations in high-integrity control systems. It ensures continuous, reliable power to essential automation hardware like the AC 800M High Integrity controller and S880 I\/O.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCore System Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Article Number:\u003c\/strong\u003e ABB, 3BSE038226R1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SS823\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Voter and Over Voltage Protection Unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Input Voltage:\u003c\/strong\u003e 1x 24 V DC (Nominal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Input Power:\u003c\/strong\u003e 500 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Output Current:\u003c\/strong\u003e 20 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Output Current (Overload):\u003c\/strong\u003e 35 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Voltage Drop (at max current):\u003c\/strong\u003e 1.2 V lower than input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Overvoltage Protection (OVP) Trip:\u003c\/strong\u003e \u0026lt; 30 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Dissipation:\u003c\/strong\u003e 24 W @ 20 A, 6 W @ 5 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Sharing:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupervision Relay:\u003c\/strong\u003e Yes (Voltage-free \"OK\" contact per channel)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Integrity Design:\u003c\/strong\u003e Yes, for SIL 3 applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical \u0026amp; Protection Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManages two redundant 24V DC power supplies, separating and supervising each input.\u003c\/li\u003e\n\u003cli\u003eDouble overvoltage protection circuit on both inputs safeguards connected equipment.\u003c\/li\u003e\n\u003cli\u003eDetects short and open circuits within the voting element itself for maximum reliability.\u003c\/li\u003e\n\u003cli\u003eOutput protected against overcurrent (current limiting) and overvoltage (OVP).\u003c\/li\u003e\n\u003cli\u003eInput designed for SELV (Safety Extra Low Voltage) or PELV (Protective Extra Low Voltage) power supplies.\u003c\/li\u003e\n\u003cli\u003eGreen LED per channel on front panel provides instant visual confirmation of correct output voltage.\u003c\/li\u003e\n\u003cli\u003eSimultaneous with LED illumination, a voltage-free \"OK\" relay contact closes for remote monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCertifications \u0026amp; Environmental Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Integrity:\u003c\/strong\u003e Certified for \u003cstrong\u003eSIL 3\u003c\/strong\u003e according to IEC 61508.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Safety:\u003c\/strong\u003e Compliant with IEC 61131-2, EN 50178.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Areas:\u003c\/strong\u003e ATEX Zone 2 certified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental:\u003c\/strong\u003e G3 compliance for corrosive atmospheres (ISA-S71.04).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMC:\u003c\/strong\u003e Complies with EN 61000-6-4 (Emissions) and EN 61000-6-2 (Immunity).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine:\u003c\/strong\u003e Certified by ABS, BV, DNV-GL, LR.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e IP20 protection rating (IEC 60529).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS\/WEEE:\u003c\/strong\u003e Compliant with EU directives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment Class:\u003c\/strong\u003e Class I (requires Protective Earth connection).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMechanical \u0026amp; Installation Data\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Simple DIN-rail mounting (35mm).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 116 mm x 132 mm x 145 mm (4.6\" x 5.3\" x 5.8\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 870 g (1.9 lbs.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Spacing:\u003c\/strong\u003e 15 mm side-to-side, 30 mm above\/below for ventilation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Ambient Temperature:\u003c\/strong\u003e 55 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePollution Degree:\u003c\/strong\u003e 2 (IEC 60664-1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Application Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall on a standard DIN rail within the control cabinet, observing required spacing for cooling.\u003c\/li\u003e\n\u003cli\u003eConnect the outputs of two redundant 24V DC power supplies (e.g., ABB SD83x series) to the voter inputs.\u003c\/li\u003e\n\u003cli\u003eConnect the voter's output to the power distribution for the AC 800M High Integrity controller and S880 I\/O system.\u003c\/li\u003e\n\u003cli\u003eWire the voltage-free \"OK\" supervision relay contacts to the controller or monitoring system for alarm\/status.\u003c\/li\u003e\n\u003cli\u003eEnsure proper protective earth (PE) connection as this is a Class I device.\u003c\/li\u003e\n\u003cli\u003eDo not exceed the maximum ambient temperature of 55°C to ensure rated performance.\u003c\/li\u003e\n\u003cli\u003eThis unit is a key component in safety instrumented systems (SIS) requiring SIL 3 power redundancy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor system integration support or to order the \u003cstrong\u003eABB SS823 Voting Unit (3BSE038226R1)\u003c\/strong\u003e, contact our engineering team.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact:\u003c\/strong\u003e Email \u003ca href=\"mailto:sales@nex-auto.com\"\u003e\u003cstrong\u003esales@nex-auto.com\u003c\/strong\u003e\u003c\/a\u003e or WhatsApp \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e\u003cstrong\u003e+86 153 9242 9628\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePartner:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003e\u003cstrong\u003eNexAuto Technology Limited\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e© 2026 \u003ca href=\"https:\/\/www.autonexcontrol.com\/\"\u003e\u003cstrong\u003eAutoNex Controls Limited\u003c\/strong\u003e\u003c\/a\u003e. All rights reserved.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45624646566049,"sku":"SS823","price":215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/3BSE038226R1SS823_3.jpg?v=1767689018","url":"https:\/\/www.autonexcontrol.com\/it\/products\/abb-ss823-voting-unit-redundant-power-supply-control","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}