Allen-Bradley 1794-TB2 Flex I/O Terminal Base

Series#: AllenBradley

Product Details

1794-TB2 ALLEN-BRADLEY FLEX I/O Terminal Base – A critical mounting and wiring interface for the Allen-Bradley FLEX I/O system.
Designed for 16-point I/O modules, providing secure module attachment and field-side wiring connections.
Supports 20-position removable terminal blocks for easy field wiring and maintenance.
Compatible with all standard 1794 series I/O modules, ensuring seamless integration into existing control panels.
Rugged thermoplastic housing for industrial environments, rated for -20°C to +60°C operation.
Direct replacement for legacy FLEX I/O bases with no additional wiring modifications required.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

Specification

The 1794-TB2 ALLEN-BRADLEY FLEX I/O Terminal Base is a fundamental component within the Rockwell Automation FLEX I/O distributed I/O architecture. This base unit serves as the mechanical and electrical interface between the I/O module and the field wiring, featuring a robust 20-position terminal block for reliable signal termination. Engineered for high-density applications, the 1794-TB2 supports up to 16 discrete I/O points per module while maintaining a compact footprint. Its design ensures proper module alignment, grounding, and vibration resistance, making it ideal for manufacturing, process control, and material handling environments. The base is fully compatible with all standard 1794 series modules, including AC, DC, and analog variants, without requiring adapters or special wiring. For maintenance or system expansion, the terminal blocks are removable, allowing rapid module replacement without disturbing field wiring.

Parameter	Specification
Product Type	FLEX I/O Terminal Base Unit
Model Number	1794-TB2
Manufacturer	Allen-Bradley / Rockwell Automation
Series	1794 FLEX I/O
Number of I/O Points Supported	16 points per base (single module)
Terminal Block Type	20-position, removable, spring-clamp or screw-type
Wire Size Range	14 AWG to 22 AWG (solid or stranded)
Voltage Rating	125V AC / 125V DC (isolated per channel)
Current Rating	2A per point, 8A per base (total)
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)
Enclosure Material	Thermoplastic, UL 94 V-0 rated
Mounting Method	DIN rail (35 mm) or panel mount
Dimensions (H x W x D)	Approx. 87 mm x 48 mm x 70 mm (3.4 in x 1.9 in x 2.8 in)
Weight	Approx. 0.12 kg (0.26 lb)
Compatible Modules	All standard 1794 series I/O modules (AC, DC, analog, specialty)
Certifications	CE, UL, CSA, ATEX (when used with approved modules)
Shipping Weight	0.15 kg (0.33 lb) including packaging
Warranty	1 year from date of shipment