Rated 4.5 with 20 reviews


Revisions: Ser A

Description:   The Allen-Bradley 1794-TB3TS Flex I/O Terminal Base Unit has a 0.56-0.79 Nm Terminal Screw Torque, a 125V DC/AC, 50/60Hz, 10A Supply Voltage Range max., and a 125V Continuous Isolation Voltage. It also operates with a 0.34-3.3mm^3 Wire Size and a 94x94x69 mm Dimensions.


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Warranty: 1 year DO Supply Warranty Included
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Repairs: We offer repair service for the 1794-TB3TS.
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About 1794-TB3TS

The 1794-TB3TS Flex I/O Terminal Base Unit by Allen-Bradley is a device which provides terminal connection points for most Flex I/O module wiring and its connection with other terminal base units form the basis for the backplane. The module has an I/O connection capacity of 16 I/O and it has 10 common terminals, 4 voltage terminals, 8 chassis ground terminals, and 2 sets of cold-junction compensation (CJS) used specifically for Flex I/O temperature modules. It has an application electrical rating of 125V AC/DC and has a maximum current capacity of 10A. The 1794-TB3TS uses a DIN Rail or Wall/Panel mounting method and it provides connected Flex I/O module termination via the spring clamp. It has a FLEXBUS rating of 640mA at 5V DC and provides a 2A max current at the I/O terminals. 
This terminal base has a V/COM rating of 125V DC/AC with 10A current at 50-60 Hz and provides voltage isolation depending on the module connected but can provide 125V isolation between field wiring terminals to FLEXBUS. The 1794-TB3TS uses the 1.2 mm (3/64 in) thick insulated copper wire with 22-12 AWG rated wire size at 75 °C (167 °F) and the whole module has an open-style enclosure. It is designated the T4A and T4 temperature codes (maximum temperature of 135 0C) it has an operational temperature range of -20-70 °C (-4-158 °F) at a relative humidity range of 5-95% without condensation. The 1794-TB3TS is CSA, CE, and c-UL-us certified, and it has a total dimension of 94mm x 94mm x 69mm (3.7in x 3.7in x 2.7in) with the module installed.

Technical specifications:

Manufacturer:Rockwell Automation
Part Number/Catalog No.:1794-TB3TS
Product Type:Flex I/O Terminal Base Unit
Terminal Screw Torque:0.56-0.79 Nm
Supply Voltage Range max.:125V DC/AC, 50/60Hz, 10A
Isolation Voltage:125V Continuous
Voltage Rating:24V DC/AC, 120V DC/AC
Wire Size:0.34-3.3mm^3
Dimensions:94x94x69 mm
Type Lead Time Price Action
Repair Service 2-4 weeks AskGet Quote

Our highly skilled technicians can repair your 1794-TB3TS. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Please refer to the manual for more information about the 1794-TB3TS such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
1794-TB3TS Ser A
1794-TB3TS/A, Series A, Rev A Request Quote

Common misspellings: 1794TB3TS