Door coupling rotary handle for use as main switch with EMERGENCY SWITCHING OFF function according to EN 60204 in MCC distribution board having built-in PKE rotated by 90 degrees plug-in extension shaft PKZ0-XAH, can be cut to desired length for mounting depths from 100…200 mm. Carrier with extension shaft included as standard. With ON/OFF switch position and “+” (tripped), lockable in the off position with 3 padlocks 4...8 hasp thickness