{"product_id":"abb-tb846-3bse021439r1-system-800xa-s800-redundant-modulebus-adapter","title":"ABB TB846 3BSE021439R1 System 800xA S800 Redundant ModuleBus Adapter","description":"\u003ch2\u003eABB TB846 Redundant ModuleBus Cable Adapter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB TB846\u003c\/strong\u003e (Part Number: \u003cstrong\u003e3BSE021439R1\u003c\/strong\u003e) is a redundant ModuleBus cable adapter built for the ABB S800 I\/O system within the System 800xA automation platform. It extends the ModuleBus line across separate DIN rails, allowing distributed I\/O modules on the same logical bus section to be physically dispersed within the control cabinet while maintaining communication redundancy.\u003c\/p\u003e\n\u003ch3\u003eCommunication Extension and Architecture\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTB846\u003c\/strong\u003e adapter establishes redundant bus extensions in electrical or optical configurations. When paired with a TB845 adapter and two TK801V0xx interconnecting cables, it provides dual electrical ModuleBus links to prevent single-point communication failures. Alternatively, it integrates with a TB842 adapter to enable optical ModuleBus extension, extending signal reach and offering isolation for sensitive signal lines.\u003c\/p\u003e\n\u003ch3\u003eEnvironmental and Compliance Specifications\u003c\/h3\u003e\n\u003cp\u003eDesigned for industrial enclosure installation, the unit carries an IP20 protection rating and operates in Class 2 pollution environments. It functions within an operating temperature range of 0 deg C to +55 deg C and withstands relative humidity levels from 5% to 95% (non-condensing). The module complies with IEC 61131-2 and UL 61010-1 standards for programmable controllers and industrial control equipment.\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eTB846\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e3BSE021439R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRedundant ModuleBus Cable Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eABB S800 I\/O, System 800xA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-25 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePollution Degree\u003c\/td\u003e\n\u003ctd\u003eClass 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eIEC 61131-2, UL 61010-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eSweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: How does the ABB TB846 extend the ModuleBus across different DIN rails? A: It connects via two TK801V0xx cable assemblies to a TB845 adapter to extend electrical ModuleBus communication across separated mounting rails.\u003c\/p\u003e\n\u003cp\u003eQ: Can the TB846 be used for optical ModuleBus extension? A: Yes, it can be combined with a TB842 adapter to configure an optical ModuleBus extension link.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43774673649763,"sku":"TB846","price":676.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/227_7e9b9812-c35e-4219-99b6-ff50b241bb26.jpg?v=1760316841","url":"https:\/\/www.autocontrolglobal.com\/products\/abb-tb846-3bse021439r1-system-800xa-s800-redundant-modulebus-adapter","provider":"AutoControl Global","version":"1.0","type":"link"}