MSHD. rotary handles with IP64 protection take up the free shaft end and lock it in the I position, which can be overridden. MSHD. is available with and without TRIP position, each in black or red/yellow, and can be secured against switching on in the 0 position with three padlocks. The rotary handle is attached to the control cabinet panel using a 22.5 mm central screw connection.