1756-TBCH | Allen Bradley | ControlLogix 36-Pin Removable Screw-Clamp Terminal Block

Product Description

The Allen Bradley 1756-TBCH is a removable terminal block designed for ControlLogix modules, providing secure screw-clamp connections for reliable wiring in industrial automation systems. With a 36-pin configuration, it supports both solid and stranded copper conductors, ensuring flexibility in installation. The block is engineered for durability, supporting high-temperature insulation and precise torque specifications to maintain stable electrical connections.

Technical Specifications

• Manufacturer Allen Bradley

• Product Line ControlLogix 1756 Series

• Product Type Removable Terminal Block

• Part Number 1756-TBCH

• Weight 0.31 lbs (0.14 kg)

• Clamp Type Screw-clamp

• Pins 36-pin connection

• Screw Torque 0.5 Nm (4.4 lb-in)

• Single Wire Connection 0.33–2.1 mm² (22–14 AWG)

• Double Wire Connection 0.33–1.3 mm² (22–16 AWG)

• Wire Type Solid or stranded copper wire

• Maximum Wire Insulation 90 °C (194 °F), 1.2 mm (3/64 in.)

• Recommended Tool 3.2 mm (1/8 in.) screwdriver

• Operating Temperature 0–60 °C (32–140 °F)

• Enclosure Type Open-style

• Backplane Current Load

• 1,200 mA @ 5 V DC

• 2.5 mA @ 24 V DC

• Power Dissipation (Max) 6.19 W

• Thermal Dissipation 21.1 BTU/hr

• Wire Size Supported 20 AWG

Application Scenarios

• Reliable wiring interface for ControlLogix I/O modules

• Industrial automation systems requiring removable terminal blocks for maintenance and expansion

• High-density wiring applications with screw-clamp security

FAQ

Q: How many pins does the 1756-TBCH provide?  A: It offers 36 connection pins.

Q: What wire sizes are supported?  A: Single wire: 22–14 AWG; double wire: 22–16 AWG.

Q: What screwdriver size is recommended?  A: 3.2 mm (1/8 in.) width screwdriver.

Comparable Models

• 1756-TBCH: 36-pin screw-clamp terminal block (this model)

• 1756-TBSH: 36-pin spring-clamp terminal block

• 1756-TBNH: 36-pin non-removable terminal block