ZAC is a safe source of voltage supply intended to power automatic sanitary equipment made by AZP Brno, Ltd. 

The source of power supply consists of a safety transformer produced in accordance with ČSN IEC 742+A1 standards. All kinds of sensors can be connected to these sources in random combinations, as can other devices with a supply voltage of 12 V, 50 Hz (total power requirement either 20 VA, 50 VA or 36 VA). 

ZAC 1/20 and ZAC 1/50 are independent sources, 1/36L ZAC is the source for the location on the DIN-rail (4 modules).