The 2868570 refers to the STEP-PS/ 1AC/12DC/3, a power supply unit from Phoenix Contact. It is a primary-switched STEP POWER power supply designed for DIN rail mounting, ideal for building automation. Here are its key specifications:

Input Voltage: 85 V AC to 264 V AC or 95 V DC to 250 V DC.

Output Voltage: 12 V DC (adjustable range: 10 V DC to 16.5 V DC).

Output Current: Nominal 3 A, with a maximum of 4.9 A.

Power Output: 36 W.

Efficiency: Greater than 85%.

Protection: Includes transient surge protection and overvoltage protection.

Operating Temperature: -25°C to 70°C (with derating above 55°C).

Mounting: DIN rail or surface mounting.

Dimensions: 61 mm x 54 mm x 90 mm (L x W x H).

Degree of Protection: IP20.