{"product_id":"allen-bradley-1794-tb3t-temperature-optimized-screw-clamp-terminal-base","title":"Allen-Bradley 1794-TB3T Flex I\/O Temperature-Optimized Screw-Clamp Terminal Base","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe 1794-TB3T is a 36-point screw-clamp terminal base unit designed for the Allen-Bradley Flex I\/O 1794 modular platform. This unit provides the necessary structural and electrical termination plane for both discrete and analog I\/O modules. The \"T\" suffix denotes a temperature-optimized design, featuring eight integrated chassis-ground screw terminals specifically engineered to provide low-impedance paths for shielding sensitive analog instrumentation, such as RTDs and thermocouples, effectively mitigating electromagnetic interference (EMI).\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIntegrated chassis grounding architecture with 8 dedicated ground terminals for noise-sensitive applications.\u003c\/li\u003e\n\u003cli\u003eSupports up to 16 field I\/O connections with heavy-duty screw-clamp terminals.\u003c\/li\u003e\n\u003cli\u003eIntegrated Flexbus backplane for seamless data and logic power distribution.\u003c\/li\u003e\n\u003cli\u003eMechanical keyswitch guide to prevent improper module installation and protect low-voltage components.\u003c\/li\u003e\n\u003cli\u003eCapable of handling up to 10 A aggregate current.\u003c\/li\u003e\n\u003cli\u003eCompatible with both horizontal and vertical DIN-rail or panel mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis terminal base is ideal for industrial control systems requiring high-precision analog signal processing where signal integrity is paramount. It is commonly used in process automation, temperature monitoring loops, and environments prone to electrical noise where robust grounding and shield termination are required for reliable operation.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1794-TB3T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eScrew-Clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Connections\u003c\/td\u003e\n\u003ctd\u003e16 I\/O points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround Terminals\u003c\/td\u003e\n\u003ctd\u003e8 dedicated chassis ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Voltage\u003c\/td\u003e\n\u003ctd\u003e125 VAC \/ 125 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Current\u003c\/td\u003e\n\u003ctd\u003e10 A aggregate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003e5 g at 10 to 150 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95 percent (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the DIN-rail or panel is properly grounded to the enclosure chassis before mounting.\u003c\/li\u003e\n\u003cli\u003eVerify the mechanical keyswitch on the base matches the keying of the inserted I\/O module to prevent damage.\u003c\/li\u003e\n\u003cli\u003eAlways power down the Flexbus backplane before installing or removing I\/O modules to prevent electrical arcing.\u003c\/li\u003e\n\u003cli\u003eRoute shielded cables directly to the dedicated chassis ground terminals to maximize noise immunity.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate spacing in the enclosure to allow for proper airflow and heat dissipation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary difference between the 1794-TB3 and the 1794-TB3T?\u003c\/h3\u003e\u003cp\u003eThe 1794-TB3T includes specialized chassis-grounding terminals designed for temperature-sensing applications, whereas the standard 1794-TB3 does not include these specific grounding points.\u003c\/p\u003e\u003ch3\u003eCan this base be used with non-analog modules?\u003c\/h3\u003e\u003cp\u003eYes, the 1794-TB3T is fully compatible with standard discrete digital Flex I\/O modules, though the grounding features are specifically intended for analog signal applications.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50991344550140,"sku":"1794-TB3T","price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_95c485c4-7261-4dec-9d53-1da01e81c474.jpg?v=1786991536","url":"https:\/\/www.electronicplc.com\/es\/products\/allen-bradley-1794-tb3t-temperature-optimized-screw-clamp-terminal-base","provider":"Electronic PLC","version":"1.0","type":"link"}