1794-TB3GK | Allen Bradley | FLEX I/O Conformal Coated Terminal Base

2026-04-27T23:48:21-07:00

Type: Terminal Base
Price: 66.00

Product Overview

The Allen Bradley 1794-TB3GK provides a high-integrity connection point for the FLEX™ I/O distributed system. This terminal base unit houses the I/O module and provides the interface to the FlexBus backplane. It features 3-wire screw terminations, making it ideal for high-density sensor and actuator connections. Specifically designed for longevity in demanding conditions, this version features conformal coating to resist environmental contaminants. We supply this unit as 100% Brand New and Original, ensuring your distributed I/O architecture maintains maximum uptime in corrosive or humid atmospheres.

Technical Specifications

The 1794-TB3GK offers robust mechanical and electrical interfacing for industrial nodes:

Feature | Specification
Manufacturer | Allen Bradley (Rockwell Automation)
Product Line | FLEX I/O
Termination Type | Screw Clamp (3-Wire)
Protection Rating | IP20
Special Coating | Conformal Coated (K-Series)
Mounting | DIN Rail or Panel Mount
Category | Distributed I/O Terminal Base
Weight | 3.00 lbs (1.36 kg)
I/O Capacity | Supports 1 FLEX I/O Module

Engineering Advantages

The 1794-TB3GK solves critical deployment challenges in process and heavy industry:

Superior Chemical Resistance: The conformal coating provides a protective barrier against moisture, salt spray, and corrosive chemical vapors. This prevents trace-level corrosion on internal circuitry, a technical necessity for wastewater treatment plants, paper mills, and oil and gas facilities.

Simplified Field Wiring: The 3-wire screw termination design allows for direct connection of sensors and actuators without requiring additional external terminal strips. This reduces the number of potential failure points and streamlines the troubleshooting process for maintenance technicians.

Rugged Mechanical Interlocking: The module-to-base interlocking mechanism ensures a secure electrical contact even in high-vibration environments. The base snaps firmly onto standard DIN rails, preventing lateral movement during machine operation.

FlexBus Scalability: The integrated backplane connector extends the FlexBus to the next terminal base in the row. This modular "daisy-chain" architecture allows engineers to expand I/O capacity without complex bus cabling or special termination resistors.

FAQs

What does the "K" suffix in the part number signify?

The "K" designates that the 1794-TB3GK undergoes a specialized conformal coating process during manufacturing. This protects the internal PCB from environmental stressors like humidity and airborne contaminants, whereas the standard 1794-TB3 does not have this layer.

Can I mix conformal coated bases with standard bases on the same rail?

Yes. The 1794-TB3GK remains physically and electrically compatible with all standard FLEX I/O components. However, for maximum system protection in harsh environments, we recommend using conformal coated modules (K-series) and bases throughout the entire rack.

How do I ensure a secure connection with the screw terminals?

Use a small flat-head screwdriver and follow the torque specifications provided in the installation guide. Proper torque prevents wire pull-out and ensures a low-resistance electrical path, especially in high-current 24V DC applications.

Is this a genuine Allen Bradley product?

We guarantee that every 1794-TB3GK we ship is 100% Brand New and Original. The unit arrives in the factory-sealed box with the original UPC, batch code, and Rockwell Automation quality documentation.