Q:How many Anti-Rotation notches do our PESDs have?

A: The typical PESD that installs through a 30MM knockout will have 4 anti-rotation notches. One or more corresponding internal notches will prevent the PESD from rotating.  However, a properly torqued PESD will not rotate on its own and thousands of successful installations in the field of these products without notches prove that it is not required.

If you would like to add anti-rotation notches, this can be done in the field utilizing a special punch from Z-Tech Panels that Grace collaborated with to offer to the market.  There is a Single Notch Version (P/N uDL-1210-KEY157-GP) and a 4 Notch Version (P/N uDL-1210-KEY157-GP4) that can be used. 

If this is a new panel that is being cut, use the diagram below with a laser cutter or water jet to cut out the notches.