12 Rockwell Automation Publication 1734-UM007E-EN-P - October 2015
Chapter 1 Install the Module
3. Insert the module straight down into the mounting base.
4. Press to secure. The module locks into place.
Install the Removable 
Terminal Block
A removable terminal block (RTB) comes with your mounting base assembly. To 
remove, pull up on the RTB handle. This lets you remove and replace the 
mounting base as necessary without removing any of the wiring.
To reinsert the removable terminal block, proceed as follows.
1. Insert the RTB end opposite the handle into the base unit. The end has a 
curved section that engages with the mounting base.
2. Rotate the terminal block into the mounting base until it locks itself in 
place.
WARNING: When you connect or disconnect the removable terminal block 
(RTB) with field-side power applied, an electrical arc can occur. This could cause 
an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
Hook the RTB end in to the 
mounting base end, and rotate 
until it locks into place.