{"product_id":"1794-tb3gs-allen-bradley-flex-i-o-terminal-base-units","title":"1794-TB3GS | Allen Bradley  | FLEX I\/O Terminal Base Units","description":"\u003ch2\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen‑Bradley 1794‑TB3GS\u003c\/strong\u003e is a FLEX I\/O terminal base unit designed for secure field‑signal termination and module mounting within FLEX I\/O architectures. It provides a grounded shield‑terminal design (GS type) for improved noise immunity in harsh industrial environments.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\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\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e1794‑TB3GS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eAllen‑Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eFLEX I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTerminal Type\u003c\/th\u003e\n\u003ctd\u003e36‑pin grounded shield terminal base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrounding\u003c\/th\u003e\n\u003ctd\u003eIntegrated shield‑ground bar (GS type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eDIN‑rail FLEX I\/O base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWiring Method\u003c\/th\u003e\n\u003ctd\u003eScrew‑clamp terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule Compatibility\u003c\/th\u003e\n\u003ctd\u003eAll FLEX I\/O digital, analog, and specialty modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eTerminal Base Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch2\u003e\u003cstrong\u003eFunctional Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe 1794‑TB3GS terminal base unit provides the mechanical and electrical interface between FLEX I\/O modules and field wiring. As a GS‑type base, it includes an integrated shield‑ground bar to improve noise immunity for analog and high‑speed digital signals. The screw‑clamp terminals support secure conductor retention, making the base suitable for vibration‑exposed industrial panels.\u003c\/p\u003e\n\u003cp\u003eThe base routes field signals to the FLEX I\/O backplane, enabling distributed I\/O architectures for PLC and PAC systems. It supports all FLEX I\/O module types, including analog input\/output, digital input\/output, specialty modules, and extended‑temperature variants.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does “GS” mean in 1794‑TB3GS?\u003c\/strong\u003e GS indicates a grounded shield terminal base with an integrated shield‑ground bar.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is 1794‑TB3GS compatible with all FLEX I\/O modules?\u003c\/strong\u003e Yes. It supports all FLEX I\/O analog, digital, and specialty modules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What wiring method does the base use?\u003c\/strong\u003e It uses screw‑clamp terminals for secure conductor retention.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it be used in noisy environments?\u003c\/strong\u003e Yes. The GS grounding design improves noise immunity for sensitive signals.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eField Installation Guidelines\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMaintain shield continuity using the integrated GS grounding bar.\u003c\/li\u003e\n\u003cli\u003eEnsure screw‑clamp terminals are fully tightened to prevent vibration‑related loosening.\u003c\/li\u003e\n\u003cli\u003eRoute analog and high‑speed digital wiring separately from high‑current conductors.\u003c\/li\u003e\n\u003cli\u003eVerify correct alignment of the FLEX I\/O module before snapping into the base.\u003c\/li\u003e\n\u003cli\u003eInspect terminal surfaces for contamination or oxidation before installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43766876766282,"sku":"1794-TB3GS","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8569\/3770\/files\/1794-IB16_2.png?v=1741073733","url":"https:\/\/www.topbrandsplc.com\/products\/1794-tb3gs-allen-bradley-flex-i-o-terminal-base-units","provider":"Topbrands PLC Limited","version":"1.0","type":"link"}