{"product_id":"allen-bradley-1794-tb3g-flex-i-o-terminal-base-unit","title":"Allen Bradley 1794-TB3G Flex I\/O Terminal Base Unit","description":"\u003ch2\u003eAllen Bradley 1794-TB3G Flex I\/O Terminal Base Unit\u003c\/h2\u003e\n\u003cp\u003eConfigured for field wiring termination and I\/O module connectivity in the Flex I\/O 1794 system, the \u003cstrong\u003eAllen Bradley 1794-TB3G\u003c\/strong\u003e (\u003cstrong\u003e1794-TB3G\u003c\/strong\u003e Flex I\/O Terminal Base Unit) provides direct physical\/electrical execution between field conductors and installed I\/O modules.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e1794-TB3G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O Terminal Base Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O 1794\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.55 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage Rating\u003c\/td\u003e\n\u003ctd\u003e31.2 VAC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e50 to 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd\u003e10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e2500 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Terminals\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Terminals\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Terminals\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Style\u003c\/td\u003e\n\u003ctd\u003eScrew-clamp terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size\u003c\/td\u003e\n\u003ctd\u003e24 to 16 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eDIN mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Screw Torque\u003c\/td\u003e\n\u003ctd\u003e0.56 to 0.79 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003e5 g @ 10 to 500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control Bus and I\/O Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1794-TB3G operates as a passive terminal base interface within the Allen Bradley Flex I\/O platform. The unit provides electrical termination points for Flex I\/O modules through 36 I\/O terminals, two common terminals, and two voltage terminals. The terminal base supports DIN rail installation and screw-clamp field wiring connection.\u003c\/p\u003e\n\u003cp\u003eThe Flex I\/O architecture uses modular I\/O density scaling, allowing terminal bases to be installed as part of distributed control assemblies. The terminal base provides the physical connection layer between field wiring and the associated I\/O module electronics.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: What type of mounting interface is used by the 1794-TB3G?\u003cbr\u003eA: The 1794-TB3G uses DIN rail mounting for installation within Flex I\/O distributed I\/O assemblies.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1794-TB3G provide direct I\/O signal processing?\u003cbr\u003eA: No. The terminal base provides field wiring termination and module connection functions. Signal processing is performed by the installed Flex I\/O module.\u003c\/p\u003e\n\u003cp\u003eQ: What field wiring connection method is supported?\u003cbr\u003eA: The unit uses screw-clamp terminals with supported conductor sizes from 24 to 16 AWG.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the terminal base on a properly secured DIN rail and verify mechanical engagement before connecting field conductors. Maintain separation between signal wiring and high-voltage power conductors to reduce electrical interference.\u003c\/p\u003e\n\u003cp\u003eUse the specified conductor size range and apply terminal screw tightening according to the documented torque range. Ensure grounding requirements are followed when installing grounded terminal configurations.\u003c\/p\u003e\n\u003cp\u003eFor shielded signal cables, connect cable shields according to the control system grounding practice and avoid multiple unintended ground paths. Verify terminal identification before energizing the connected Flex I\/O assembly.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43783045775450,"sku":"1794-TB3G","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-TB3G2.jpg?v=1785823065","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-tb3g-flex-i-o-terminal-base-unit","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}