Depending on the model, installation is carried out either by central mounting or mosaic mounting and meets protection classes IP40 and IP42, respectively. 

Both model Q120 (for switch size S0) and model Q100 (for switch size S00) are available as rotary handles or as rotary handles with lock (push-to-turn). 

The illuminated handles are made of transparent plastic with excellent luminosity.

Q120 models can be installed and removed without tools (total switching angle 360°), using single-hole mounting. 

For rotary handles with lock (push-pull interlock) auxiliary contacts are also available. These auxiliary contacts can be designed for utilization category AC-15, signaling contacts for electronic control systems (e.g. PLC) and use in more aggressive environmental conditions. 

For the Q120 illuminated handle model, LED lamps in green, red, or white are available (see table). 

This model can be installed using single-hole mounting or mosaic mounting. The Q100 handle is illuminated with a yellow LED. 

The following LED modules are available for AC and/or DC applications, with or without test terminal.