{"product_id":"allen-bradley-1794-tb3gs-flex-i-o-spring-clamp-terminal-base-unit","title":"Allen-Bradley 1794-TB3GS FLEX I\/O Spring-Clamp Terminal Base Unit","description":"\u003ch2\u003eAllen-Bradley 1794-TB3GS FLEX I\/O Spring-Clamp Terminal Base Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-TB3GS\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-TB3GS\u003c\/strong\u003e FLEX I\/O Spring-Clamp Terminal Base Unit, operates as a dedicated wiring interface component for field signal termination and module connection within the Rockwell Automation FLEX I\/O System.\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-TB3GS\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 Spring-Clamp Terminal Base Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e94 mm x 94 mm x 69 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eSpring-clamp (cage clamp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Configuration\u003c\/td\u003e\n\u003ctd\u003e3-Wire Terminal Base with Ground Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Terminals\u003c\/td\u003e\n\u003ctd\u003e36 I\/O terminals + 18 common\/ground terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage Rating\u003c\/td\u003e\n\u003ctd\u003e125 V AC\/DC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e132 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Capacity\u003c\/td\u003e\n\u003ctd\u003e10 A max. through I\/O terminals; 10 A max. per supply terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size Range\u003c\/td\u003e\n\u003ctd\u003e0.21 mm2 to 1.3 mm2 (24 to 16 AWG) solid or stranded copper wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrip Length\u003c\/td\u003e\n\u003ctd\u003e7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Options\u003c\/td\u003e\n\u003ctd\u003eDIN Rail 35 x 7.5 mm, 35 x 15 mm, or direct panel mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Compatibility\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley 1794 FLEX I\/O modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsertion Function\u003c\/td\u003e\n\u003ctd\u003eRIUP (Removal and Insertion Under Power) support with compatible modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and FLEX I\/O Backplane Integration Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1794-TB3GS provides the physical termination interface between field wiring and FLEX I\/O modules. The terminal base forms part of the FLEX I\/O modular assembly, allowing adjacent terminal bases to create a continuous backplane connection path.\u003c\/p\u003e\n\u003cp\u003eThe unit supports I\/O density scaling through modular terminal base expansion. The spring-clamp termination system provides fixed conductor retention without screw torque adjustment. Ground terminals allow direct connection of field cable shields and grounding conductors at the terminal base level.\u003c\/p\u003e\n\u003cp\u003eThe FLEX I\/O architecture uses module-dependent keyswitch positioning to define the installed I\/O module type and maintain correct terminal mapping during replacement procedures.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1794-TB3GS terminal base be removed or replaced while the system is powered?\u003cbr\u003eA: The terminal base supports RIUP capability when used with compatible FLEX I\/O modules. Replacement procedures must follow the module-specific installation requirements.\u003c\/p\u003e\n\u003cp\u003eQ: What type of field wiring connection does the 1794-TB3GS provide?\u003cbr\u003eA: The unit uses spring-clamp terminal strips for signal, common, supply, and grounding connections.\u003c\/p\u003e\n\u003cp\u003eQ: How are shield grounding connections handled on this terminal base?\u003cbr\u003eA: The G suffix version provides additional ground terminals for direct field shield and grounding conductor termination.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-TB3GS on a compatible DIN rail or direct panel mounting surface according to the mechanical installation requirements of the FLEX I\/O system.\u003c\/p\u003e\n\u003cp\u003eTerminate field conductors using the specified spring-clamp wire entry method. Maintain proper separation between signal wiring, AC power conductors, and high-noise switching circuits to reduce electrical interference.\u003c\/p\u003e\n\u003cp\u003eConnect cable shields and grounding conductors to the designated ground terminals. Shield termination practices should follow the control system grounding design and site electrical standards.\u003c\/p\u003e\n\u003cp\u003eVerify terminal assignment before wiring. The terminal arrangement consists of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRow A: Terminals 0 to 15 for I\/O signal wiring.\u003c\/li\u003e\n\u003cli\u003eRow B: Terminals 16 to 33 for common or neutral connections.\u003c\/li\u003e\n\u003cli\u003eRow C: Terminals 34 to 51 for supply voltage and additional ground\/shield termination points.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm module keyswitch settings and terminal mapping before energizing the FLEX I\/O assembly.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43783170785370,"sku":"1794-TB3GS","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-TB3G1.jpg?v=1785823065","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-tb3gs-flex-i-o-spring-clamp-terminal-base-unit","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}