Allen-Bradley 1794-TB3T Flex I/O Terminal Base

Series#: AllenBradley

Product Details

1794-TB3T ALLEN-BRADLEY – 3-Wire Screw Terminal Base Unit for Flex I/O Systems.
Supports up to 3-wire field device connections with robust screw-clamp terminals.
Compatible with all 1794-series I/O modules for seamless system integration.
Rugged industrial design rated for -20°C to +60°C operating temperature range.
Compact footprint – ideal for space-constrained control panels and remote racks.
UL, CE, and CSA certified – meets global safety and performance standards.
100% Genuine and New, rigorously inspected before international dispatch.

Specification

The 1794-TB3T ALLEN-BRADLEY 3-Wire Screw Terminal Base is a critical component for Rockwell Automation's Flex I/O distributed control architecture. Designed for reliable field wiring termination, this base unit accommodates up to three-wire sensors or actuators per channel, providing a secure screw-clamp connection that withstands vibration and industrial environments. The 1794-TB3T integrates directly with 1794-series digital and analog modules, enabling efficient signal routing in manufacturing, process, and utility applications. Its compact, modular design simplifies installation in both local and remote I/O configurations, while the high-temperature rated housing ensures stable performance in demanding conditions.

Parameter	Specification
Product Type	3-Wire Screw Terminal Base Unit
Model Number	1794-TB3T
Manufacturer	Allen-Bradley (Rockwell Automation)
Series	Flex I/O
Number of Terminals	8 (for 3-wire field connections)
Wire Size Range	0.5 to 2.5 mm² (AWG 22–14)
Terminal Type	Screw clamp, captive screws
Rated Voltage	30V AC/DC (max)
Rated Current	8 A per terminal (max)
Operating Temperature	-20°C to +60°C (-4°F to +140°F)
Storage Temperature	-40°C to +85°C (-40°F to +185°F)
Relative Humidity	5% to 95% non-condensing
Vibration Resistance	5 g Standard Models 10–500 Hz (per IEC 60068-2-6)
Shock Resistance	30 g, 11 ms half-sine (per IEC 60068-2-27)
Protection Rating	IP20 (NEMA 1) – indoor use only
Material	Polycarbonate housing, nickel-plated contacts
Mounting Type	DIN rail (35 mm) or panel mount via integral clips
Compatible Modules	1794-IB16, 1794-OB16, 1794-IE8, 1794-OE8, 1794-IF4I, 1794-OF4I, and all standard 1794-series I/O modules
Dimensions (H x W x D)	Approx. 87 mm x 45 mm x 55 mm (3.43 in x 1.77 in x 2.17 in)
Weight	Approx. 0.12 kg (0.26 lbs)
Certifications	UL 508, CSA C22.2 No. 14, CE (EN 61131-2), ATEX (Zone 2) optional
Wiring Diagram	Standard 3-wire: Power (+), Signal (S), Common (-) per channel
Accessories Included	None (terminal base only; module sold separately)