{"product_id":"abb-safety-relay-module-nc-output-for-s800-i-o-do821","title":"ABB Safety Relay Module - NC Output for S800 I\/O - DO821","description":"\u003ch2\u003eDO821 Relay Module: 8-Channel Safety Control for Industrial Systems\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to ship today\u003c\/strong\u003e via FedEx, UPS, or DHL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-month product warranty\u003c\/strong\u003e for peace of mind\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert technical support\u003c\/strong\u003e included with your purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe DO821 module delivers \u003cstrong style=\"color: #2e86ab;\"\u003e8 safety relay outputs\u003c\/strong\u003e for your S800 I\/O system. This module handles \u003cstrong\u003e230V AC\/DC power\u003c\/strong\u003e with \u003cstrong style=\"color: #2e86ab;\"\u003e3A maximum current\u003c\/strong\u003e. Perfect for critical shutdown systems and safety applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong style=\"color: #a23b72;\"\u003eNormally Closed relay contacts\u003c\/strong\u003e for safety-first design\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividual channel isolation\u003c\/strong\u003e for maximum protection\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Status Protection (OSP)\u003c\/strong\u003e for error handling\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVisual status indicators\u003c\/strong\u003e for easy monitoring\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModuleBus communication\u003c\/strong\u003e for system integration\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ABB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DO821 | 3BSE013250R1\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Type:\u003c\/strong\u003e 8-Channel Relay (NC)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e 5-250V AC\/DC\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 3A per channel\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIsolation:\u003c\/strong\u003e 2000V AC dielectric test\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Use:\u003c\/strong\u003e Typical 2.9W\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temp:\u003c\/strong\u003e 0°C to +55°C\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWire Distance:\u003c\/strong\u003e 600 meters maximum\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModule Width:\u003c\/strong\u003e 45mm compact design\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.23kg lightweight\u003c\/p\u003e\n\u003ch3\u003eCompatible Mounting Units\u003c\/h3\u003e\n\u003cp\u003eUse with TU811, TU813, TU831, TU836, TU837, TU851\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKeying Code:\u003c\/strong\u003e CA required\u003c\/p\u003e\n\u003ch3\u003eSafety \u0026amp; Certifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCE Certified\u003c\/strong\u003e for European market\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUL Safety Standards\u003c\/strong\u003e compliant\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRoHS \u0026amp; WEEE\u003c\/strong\u003e environmental standards\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIP20 Protection\u003c\/strong\u003e against dust and touch\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Support\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFast Worldwide Shipping:\u003c\/strong\u003e FedEx, UPS, DHL\u003c\/p\u003e\n\u003cp\u003e\u003cstrong style=\"color: #28a745;\"\u003e12-Month Warranty\u003c\/strong\u003e on all components\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does Normally Closed (NC) mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe circuit is complete when de-energized. It opens when activated. This failsafe design is ideal for safety applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the OSP feature work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOutput Status Protection sets relays to a safe state if system errors are detected, preventing unexpected operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum wire size?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse 0.05-2.5mm² solid or 0.05-1.5mm² stranded wire. Strip 6-7mm of insulation for proper connection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix AC and DC voltages?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the DO821 handles both AC and DC signals from 5V to 250V on the same module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens during power loss?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module detects power issues and triggers warning LEDs. The error status can be read through ModuleBus communication.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45343485034657,"sku":"DO821","price":277.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/DO821.jpg?v=1762840320","url":"https:\/\/www.autonexcontrol.com\/th\/products\/abb-safety-relay-module-nc-output-for-s800-i-o-do821","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}