Allen-Bradley | 1794-TB3 | FLEX I/O (1794 Series)

Product Description: Allen-Bradley 1794-TB3

The Allen-Bradley 1794-TB3 is an 18-point terminal base used in the FLEX I/O system to facilitate the connection of field I/O signals to FLEX I/O modules. It features screw-clamp terminations that provide secure and reliable wiring for both digital and analog I/O modules. Designed for modularity, the TB3 enables easy installation and maintenance, and is widely used in distributed control systems where compact wiring is required.

Key Features

• 18 terminal points for I/O and power wiring
• Screw- clamp terminal connections for secure and durable termination
• Compatible with various FLEX I/O modules
• Mountable on DIN rail or panel surfaces
• Color-coded and numbered terminals for easy identification
• Interchangeable with other 1794 terminal bases for modular flexibility
• Supports quick replacement of I/O modules without disturbing wiring

Technical Specifications

• Terminal Type: Screw-clamp
• Number of Terminals: 18
• Wire Size Range:
  • Solid: 0.33–2.1 mm² (22–14 AWG)
• Mounting: DIN rail or panel
• Operating Temperature: 0°C to 55°C
• Dimensions (HxWxD): Approx. 76 x 94 x 66 mm
• Certifications: UL Listed, CE, CSA, RoHS, Class I Div 2

Application Areas

• Distributed control systems
• Compact field wiring for digital and analog I/O
• Material handling and machine control systems
• Process control installations with modular architecture
• OEM automation systems using FLEX I/O components

Advantages

• Screw terminals offer robust, vibration-resistant connections
• Compact footprint suitable for space-constrained panels
• Compatible with all FLEX I/O adapters and I/O modules
• Enables modular I/O expansion and easy field wiring
• Ideal for both discrete and analog signal integration