{"product_id":"allen-bradley-1794-tb3g-industrial-automation-module-heavy-duty","title":"Allen-Bradley 1794-TB3G Industrial Automation Module - Heavy-Duty","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1794-TB3G Flex I\/O Terminal Base Unit is a key component in the Flex I\/O 1794 series, designed to host I\/O modules and provide secure wiring termination. This terminal base unit mounts on a panel or DIN rail, offering a robust foundation for field wiring connections in demanding industrial environments.\u003c\/p\u003e\u003cp\u003eWith 36 maximum input\/output terminal points, two common terminals, and two positive voltage terminals, the 1794-TB3G supports a wide range of I\/O configurations. It delivers a FLEXBUS current of 640 mA at 5V DC and handles a maximum I\/O terminal current of 2A, ensuring reliable power distribution to connected modules.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\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\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1794-TB3G\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\u003eTerminal Screw Torque\u003c\/td\u003e\n\u003ctd\u003e0.56–0.79 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage Range\u003c\/td\u003e\n\u003ctd\u003eMax 31.2V DC\/AC, 50\/60Hz, 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50V Continuous max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e24V DC\/AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size\u003c\/td\u003e\n\u003ctd\u003e0.21–1.3 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e94 x 94 x 69 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e10612598180230\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh I\/O Density:\u003c\/strong\u003e 36 terminal points accommodate multiple signals, reducing space requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Mounting:\u003c\/strong\u003e Panel or DIN rail installation simplifies integration into existing control panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates from -20°C to 70°C without derating, suitable for harsh environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Isolation:\u003c\/strong\u003e 50V continuous isolation voltage protects against electrical interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Connections:\u003c\/strong\u003e Grounded screw clamp ensures reliable wire termination.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1794-TB3G is widely used in manufacturing lines, process control systems, and material handling equipment. For example, in a packaging line, the 1794-TB3G provides a stable wiring base for discrete I\/O modules that monitor sensors and control actuators, ensuring smooth operation. In a water treatment plant, it connects analog input modules that measure flow and pressure, enabling precise process control.\u003c\/p\u003e\u003cp\u003eIts 24V DC\/AC rating and high current capacity make it suitable for both DC and AC control circuits, offering flexibility across different automation setups.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eMount the 1794-TB3G on a standard DIN rail or panel using the integrated mounting holes. Ensure the terminal base is firmly secured before inserting any I\/O module. Wire field devices to the screw clamp terminals, tightening to the specified torque of 0.56–0.79 Nm to guarantee a solid electrical connection.\u003c\/p\u003e\u003cp\u003eUse copper wire with a cross-section of 0.21–1.3 mm² (24–16 AWG) rated at 75°C. Keep wiring neat and away from high-voltage sources to minimize noise. After wiring, verify that all connections are tight and that the module is correctly seated on the bus.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eInspect the 1794-TB3G periodically for loose connections, especially after vibration or thermal cycling. Check terminal screws for proper torque and re-tighten if necessary. Keep the unit clean and dry, as it is rated for 5–95% non-condensing humidity. Operating within the -20°C to 70°C range ensures long-term reliability.\u003c\/p\u003e\u003cp\u003eBecause the 1794-TB3G is a passive component, it has no moving parts, reducing wear. Regular visual inspections and preventive maintenance will extend its service life and prevent unexpected downtime.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1794-TB3G is designed for the Allen-Bradley Flex I\/O 1794 series. It connects I\/O modules to the FLEXBUS, allowing communication with Allen-Bradley controllers such as ControlLogix, CompactLogix, and PLC-5 systems. The terminal base supports a wide range of Flex I\/O modules, including digital, analog, and specialty modules, making it a versatile choice for system expansion.\u003c\/p\u003e\u003ch2\u003eSelection Guide\u003c\/h2\u003e\u003cp\u003eBefore purchasing, verify that your I\/O modules are compatible with the 1794-TB3G terminal base. Check the number of I\/O points and the voltage requirements of your application. Consider the environmental conditions — the 1794-TB3G operates in temperatures from -20°C to 70°C and humidity up to 95% non-condensing, making it suitable for most industrial settings.\u003c\/p\u003e\u003cp\u003eWhen you need a reliable terminal base for your Flex I\/O system, choose the Allen-Bradley 1794-TB3G from PLC Source PRO to ensure authentic parts and fast delivery.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44454184353891,"sku":"1794-TB3G","price":257.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1794-ACN15_202_7cf537cc-a1c0-4d65-a7a9-15736d1b3917.jpg?v=1786123460","url":"https:\/\/www.plcsourcepro.com\/he\/products\/allen-bradley-1794-tb3g-industrial-automation-module-heavy-duty","provider":"PLC Source PRO","version":"1.0","type":"link"}