Allen-Bradley 1756-TBNH ControlLogix 20 Position Terminal Block

Product Overview

The Allen-Bradley 1756-TBNH is a removable terminal block (RTB) for ControlLogix I/O modules. This 20-position NEMA screw-clamp block provides a secure connection for field-side wiring. It is an I/O module accessory and must be ordered separately. The 1756-TBNH plugs directly into the front of the I/O module for easy installation.

Application Scenarios

This terminal block is ideal for industrial automation environments. It connects 1756 I/O modules to plant wiring. Each ControlLogix I/O module requires an RTB for field-side connections. These modules support applications from high-speed digital processing to process control. The 1756-TBNH uses producer-consumer technology for efficient data sharing.

Technical Specifications

The 1756-TBNH has a screw-clamp type with 20 pins. It weighs 0.3 pounds (0.1 kilograms). The backplane current is 1,200 milliamps at 5 Volts and 2.5 milliamps at 24 Volts. Maximum power dissipation is 6.19 Watts. The wire size is 20 AWG. Dimensions are 5.51 x 4.41 x 5.71 inches. The operating temperature range is 32-140 Fahrenheit (0-60 Celsius).

Installation & Maintenance Guide

Use 0.33 – 2.1 mm² (22 - 14 AWG) solid or stranded copper wire. Wire must be rated at 90 °C or greater. Do not mix solid and stranded wires on the block. Do not wire more than two conductors on any single terminal. The screw torque is 1.36 Nm. The maximum screwdriver width is 8 mm (5/16 in.). Use a 1.2 mm (3/64 in.) gauge maximum insulation.

Packing List

1 x Allen-Bradley 1756-TBNH Removable Terminal Block. Shipping options include FedEx, UPS, or DHL.