The Siemens 6EP3331-6SB00-0AY0 is a control circuit/power supply module. It utilizes a switching-mode power supply with input voltage from 100V AC to 240V AC and output voltage of 24V DC. It features an integrated, adjustable switching power supply for powering and controlling loads. It offers protection against overload and short-circuit, with an output current that can be set to 1.2A or 2.5A. Additionally, its fixed parameters, which can be changed by programming, feature a mean time between failure (MTBF) of up to 100 000 h. The module also features a high efficiency of up to 92%. Its DIN-rail mounting frame allows for easy installation and maintenance.