FLEX I/O | Allen Bradley 1794-TB2 Terminal Base Unit

Product Description

The Allen Bradley FLEX I/O 1794-TB2 terminal base is a compact and durable connection interface designed for FLEX I/O modules. It provides secure wiring termination, reliable electrical isolation, and mechanical stability within distributed control systems. This unit is engineered to support flexible installation while maintaining consistent performance across industrial environments.

Technical Specifications

• Manufacturer: Allen Bradley

• Product Line: FLEX I/O 1794

• Catalog Number / Model: 1794-TB2

• Product Type: Terminal Base Unit

• Weight: 0.50 lbs (0.23 kg)

• Terminal Screw Torque: 0.56–0.79 Nm

• Supply Voltage Range (Max): 125 V AC/DC, 50/60 Hz, 10 A

• Isolation Voltage: 125 V continuous

• Voltage Ratings: 24 V AC/DC, 120 V AC/DC

• Wire Size Supported: 0.21–1.3 mm²

• Mounting: Designed for FLEX I/O modules, providing mechanical support and electrical connection

Application Scenarios

• Distributed control systems requiring modular I/O connectivity

• Process industries such as chemical, pharmaceutical, and food production

• Utility and energy systems where reliable wiring termination is critical

FAQ

Q: What is the function of the 1794-TB2 terminal base?  A: It provides the physical and electrical interface for FLEX I/O modules, ensuring secure wiring and module stability.

Q: What wire sizes are supported?  A: The unit supports conductors ranging from 0.21 mm² to 1.3 mm².

Q: Can the 1794-TB2 handle both AC and DC voltages?  A: Yes, it supports up to 125 V AC/DC with continuous isolation.

Comparison with Similar Models

• 1794-TB2: Standard terminal base with screw‑type connections.

• 1794-TB3: Terminal base with spring clamp connections for faster installation.

• 1794-TBN: Terminal base with NEMA-rated wiring support.