The Schmersal ZS236-11Z-M20 is a 3-position rotary selector switch with a black actuator, coded A-B-A/0-I-0, designed for use with low-voltage control circuits. The device has a 20mm panel cutout with a panel mounting depth of 16mm and is rated for an AC voltage of 10A/250V or 5A/400V. This selector switch is UL, CSA, TUV, and VDE approved.