{"product_id":"abb-tu846-3bse022460r1-s800-i-o-module-termination-unit","title":"ABB TU846 3BSE022460R1 S800 I\/O Module Termination Unit","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTU846\u003c\/strong\u003e is a \u003cstrong\u003eModule Termination Unit\u003c\/strong\u003e (MTU) designed for the \u003cstrong\u003eS800 I\/O\u003c\/strong\u003e system. It provides the physical housing, electrical connections, and termination points for two \u003cstrong\u003eCI840\u003c\/strong\u003e Fieldbus Communication Interfaces in a \u003cstrong\u003e1+1 redundant\u003c\/strong\u003e configuration. This unit enables \u003cstrong\u003eredundant I\/O\u003c\/strong\u003e capabilities and is engineered for \u003cstrong\u003evertical mounting\u003c\/strong\u003e within control cabinets to optimize space and thermal management. The unit distributes power and internal Modulebus signals to the hosted communication modules while maintaining complete electrical isolation and signal integrity.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupports dual \u003cstrong\u003eCI840\u003c\/strong\u003e modules for fully redundant fieldbus communication.\u003c\/li\u003e\n\u003cli\u003eDesigned for vertical DIN-rail mounting to facilitate efficient cabinet layout.\u003c\/li\u003e\n\u003cli\u003eIncludes one dedicated power supply connector for secure input distribution.\u003c\/li\u003e\n\u003cli\u003eEquipped with two \u003cstrong\u003eTB807\u003c\/strong\u003e Modulebus Terminators to ensure correct bus impedance.\u003c\/li\u003e\n\u003cli\u003eBuilt-in mechanical keying prevents the insertion of incorrect module types.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDistributed Control Systems (DCS) and Programmable Logic Controllers (PLC).\u003c\/li\u003e\n\u003cli\u003eProcess automation industries including oil and gas, chemical, and water treatment.\u003c\/li\u003e\n\u003cli\u003eHigh-availability power generation and electrical distribution control systems.\u003c\/li\u003e\n\u003cli\u003eFactory automation environments requiring redundant I\/O infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\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\u003eValue\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTU846\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3BSE022460R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModule Termination Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eS800 I\/O System (System 800xA 4.0\/4.1\/5.0\/5.1\/6.0, Compact Product Suite)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Modules\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1+1 CI840 Fieldbus Communication Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Orientation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVertical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Accessories\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 x Power Supply Connector, 2 x TB807 Modulebus Terminators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHS Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e853710\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCustoms Tariff Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e85371098\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Net Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e124 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Net Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e186 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Net Depth \/ Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e47 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Net Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Batteries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoHS Compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEU Directive 2011\/65\/EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWEEE Category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5. Small Equipment (No External Dimension More Than 50 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003ch3\u003eDIN Rail Installation\u003c\/h3\u003e\n\u003cp\u003eMount the termination unit vertically onto a standard 35 mm DIN rail. Ensure the rail is properly grounded to the cabinet enclosure. Engage the top DIN rail clip first, then press the lower portion of the unit firmly against the rail until the locking mechanism clicks into place.\u003c\/p\u003e\n\u003ch3\u003ePower Connection\u003c\/h3\u003e\n\u003cp\u003eConnect the system power supply using the included power supply connector block. Verify that the input voltage complies with the requirements of the hosted communication modules before energizing the circuit. Ensure proper polarity is maintained to prevent component damage.\u003c\/p\u003e\n\u003ch3\u003eModulebus Termination\u003c\/h3\u003e\n\u003cp\u003eThe two included \u003cstrong\u003eTB807\u003c\/strong\u003e Modulebus Terminators must be installed at the designated ends of the internal bus segment. Correct termination is required to eliminate signal reflections and maintain reliable communication across the S800 I\/O structure.\u003c\/p\u003e\n\u003ch3\u003eCooling and Ventilation\u003c\/h3\u003e\n\u003cp\u003eMaintain adequate clearance above and below the vertically mounted unit to allow natural convective airflow. Do not block the ventilation paths of the hosted modules, as proper thermal dissipation prevents localized overheating.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the TU846 unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt acts as a physical base and electrical interface that supports two fieldbus communication modules in a redundant configuration for the S800 I\/O system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module termination unit come with the necessary terminators?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the package includes two TB807 Modulebus Terminators along with one power supply connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this unit be mounted horizontally on a DIN rail?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, this specific model is designed exclusively for vertical mounting to ensure proper module alignment and optimal heat dissipation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich specific communication module is compatible with this MTU?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is explicitly designed to host the CI840 Fieldbus Communication Interface in a 1+1 redundant setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs any special tool required to secure the power supply connector?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStandard industrial screwdrivers matching the terminal block screws are sufficient to secure the incoming power wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat control systems support this equipment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is compatible with ABB System 800xA (versions 4.0 through 6.0) and the Compact Product Suite utilizing S800 I\/O.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52668617195883,"sku":"3BSE022460R1","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/abb-tu846-3bse022460r1-module-termination-unit-s5vgviwm0sq_7ee41948-f260-41f2-bc09-d74e1f57e505.jpg?v=1765535714","url":"https:\/\/www.plcprotech.com\/products\/abb-tu846-3bse022460r1-s800-i-o-module-termination-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}