{"product_id":"allen-bradley-1794-tb3gs-spring-clamp-terminal-base-unit","title":"Allen-Bradley 1794-TB3GS  Spring Clamp Terminal Base Unit","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-TB3GS\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-TB3GS\u003c\/strong\u003e Terminal Base Unit, operates as a dedicated hardware component for high-density I\/O wiring termination within Flex I\/O 1794 backplane network assemblies. Featuring 36 spring clamp I\/O terminals alongside dedicated power and common connections, this base routes field signals directly to removable 1794 functional modules while maintaining continuous system power and backplane communication.\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\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.28 kg (0.63 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1794 Base Form Factor\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\u003ePassive Base Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage Rating\u003c\/td\u003e\n\u003ctd\u003e24 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current Rating\u003c\/td\u003e\n\u003ctd\u003e10.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eSpring Clamp Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Terminals\u003c\/td\u003e\n\u003ctd\u003e36 Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Terminals\u003c\/td\u003e\n\u003ctd\u003e2 Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Terminals\u003c\/td\u003e\n\u003ctd\u003e2 Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Type\u003c\/td\u003e\n\u003ctd\u003eOpen Style (IP20)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN Rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication and Deterministic Network Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1794-TB3GS incorporates an integrated backplane bus pass-through interface engineered to preserve backplane bus communication velocity across adjacent Flex I\/O modules. Designed for seamless integration into EtherNet\/IP and ControlNet deterministic networks via 1794 adapter modules, the base structure maintains continuous signal path continuity during field operations. The spring clamp terminal configuration ensures consistent contact pressure under industrial mechanical vibration, mitigating signal intermittent dropouts and suppressing high-frequency noise interference across sensitive digital and analog I\/O channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the installation advantages of spring clamp terminals on the 1794-TB3GS?\u003c\/p\u003e\n\u003cp\u003eA: Spring clamp terminals eliminate screw-torque maintenance requirements and resist wire loosening caused by continuous industrial vibration. They provide consistent clamping force on 36 field signal terminations, reducing field wiring setup time and contact degradation.\u003c\/p\u003e\n\u003cp\u003eQ: Can an I\/O module be replaced on a 1794-TB3GS base without removing power from the whole backplane?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Under RIUP (Removal and Insertion Under Power) protocol limits, functional Flex I\/O modules can be detached and replaced from the 1794-TB3GS base while the base unit maintains field power bus continuity and backplane pass-through signals to adjacent modules.\u003c\/p\u003e\n\u003cp\u003eQ: How are common and power voltage distribution buses wired on this base unit?\u003c\/p\u003e\n\u003cp\u003eA: The base provides 2 dedicated voltage terminals and 2 dedicated common terminals alongside the 36 signal points, allowing direct cross-marshaling of 24 V AC\/DC field power without requiring external terminal blocks.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-Rail Attachment\u003c\/strong\u003e: Snap the 1794-TB3GS onto a standard 35 mm DIN rail (EN 50022). Slide the base sideways to firmly interlock its backplane connector with the adjacent 1794 module base or adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Clamp Wiring\u003c\/strong\u003e: Insert a small flat-blade screwdriver into the actuator slot to open the spring clamp cage. Insert stripped solid or stranded wire into the conductor port and release the spring mechanism for a vibration-resistant termination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower and Signal Separation\u003c\/strong\u003e: Group 24 V AC\/DC power supply leads away from low-voltage analog signal lines within panel wire ducts to prevent electromagnetic coupling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Requirements\u003c\/strong\u003e: Mount the IP20 open-style assembly inside an NEMA or IP54 industrial enclosure to protect against dust, airborne contaminants, and conductive moisture.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52786937987352,"sku":"1794-TB3GS","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1794-TB3S2_Cocoai_1_00f59b8f-6c80-47e2-a4b4-57ca51fb2e0d.jpg?v=1790653340","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1794-tb3gs-spring-clamp-terminal-base-unit","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}