Product Overview

The Allen-Bradley 1756-TBS6H is a 36-pin spring-clamp Removable Terminal Block (RTB) engineered specifically for the ControlLogix I/O module family. As an essential accessory for the 1756 series, this terminal block provides the physical interface between field wiring and the I/O module, enabling reliable and organized signal connections in industrial control systems -1-5. The 1756-TBS6H must be ordered separately from the I/O module, offering system integrators and end-users the flexibility to select the appropriate termination method for their specific application requirements.

The Allen-Bradley 1756-TBS6H features a spring-clamp termination technology that eliminates the need for screwdriver torque control during wiring, accelerating installation and reducing the potential for loose connections caused by vibration -9. This tool-free wiring mechanism ensures consistent contact pressure across all terminations, enhancing signal integrity in demanding industrial environments. Designed with a low-profile standard housing, the 1756-TBS6H seamlessly integrates with all 1756 ControlLogix I/O modules, supporting a wide range of applications from discrete digital input/output to high-density analog signal processing. The removable design of the 1756-TBS6H/A enables rapid module replacement without disturbing field wiring, significantly reducing system downtime and simplifying maintenance procedures.

 

Technical Specifications

Parameter Name	Value
Product Model	1756-TBS6H
Manufacturer	Allen-Bradley (Rockwell Automation)
Product Type	Removable Terminal Block (RTB)
Platform	ControlLogix
Pin Count	36-Position
Connection Type	Spring-Clamp
Wire Size (Solid/Stranded)	22-14 AWG (0.33-2.1 mm²) -3-5
Maximum Conductor Insulation	1.2 mm (3/64 in.) -5
Conductors per Terminal	1 Maximum -5
Backplane Current Draw (5V)	1,200 mA -5
Backplane Current Draw (24V)	2.5 mA -5
Power Dissipation (Max)	6.19 W -5
Operating Temperature	0°C to +60°C (+32°F to +140°F) -3-4
Operating Shock	30G -3-5
Operating Vibration	2G -3
Weight	0.11 kg (0.25 lbs) -5
Certifications	UL, CSA, CE, KC, RCM, Marine, GOST, CCC -3

 

Main Features and Advantages

Spring-Clamp Technology for Reliable Connections: The Allen-Bradley 1756-TBS6H utilizes spring-clamp terminal technology that provides consistent and secure wire connections without the need for specialized tools -3-9. This design ensures reliable signal integrity even in high-vibration industrial environments where traditional screw terminals can loosen over time. The 1756-TBS6H allows a single conductor per terminal, accommodating solid or stranded copper wire from 22 to 14 AWG with a maximum insulation diameter of 1.2 mm -5.

Removable Design for Simplified Maintenance: The 1756-TBS6H/A is designed for direct plug-in connection to the front face of compatible ControlLogix I/O modules, facilitating quick and tool-free installation -11. The removable nature of the 1756-TBS6H enables module replacement without disconnecting field wiring, dramatically reducing mean time to repair (MTTR). This feature is particularly valuable in critical applications where minimizing downtime is essential, as the wiring harness remains intact while the I/O module is swapped.

High-Density 36-Pin Configuration: The 1756-TBS6H supports a 36-position interface, accommodating dense signal termination requirements for both digital and analog I/O modules in the ControlLogix platform -3-11. This high-density design conserves valuable panel space while providing organized and accessible wiring terminations, with clear pin orientation and a built-in handle that simplifies insertion and removal procedures -11.

Comprehensive Environmental Certification: The Allen-Bradley 1756-TBS6H carries a wide range of international certifications including UL, CSA, CE, KC, RCM, Marine, GOST, and CCC, ensuring compliance with global industrial standards -3. With an operating temperature range of 0°C to +60°C and rated for 30G shock and 2G vibration, the 1756-TBS6H is built to perform reliably in demanding industrial control cabinet environments, from automotive assembly plants to marine applications -3.