Siemens 6EV3053-0DC Power Supply | 24V 2A 48W S5 Rack PSU

Stable DC Power for S5 Automation Racks

The Siemens 6EV3053-0DC power supply delivers regulated DC voltage to S5-100U and S5-115U system racks. This unit converts AC mains into clean 24 V DC, ensuring stable operation of all connected modules. Control cabinets require dependable power sources, and this model fulfills that need consistently.

Input and Output Electrical Characteristics

This power supply accepts a wide input range from 93 V to 132 V AC or 185 V to 264 V AC via a selector switch. The unit provides a nominal output of 24 V DC at 2 A, with short-term surge capability up to 2.5 A. Total output power reaches 48 watts, sufficient for small to medium-sized automation configurations. Furthermore, the integrated input filter suppresses conducted emissions, meeting EN 55022 Class B limits.

Parameter	Specification
Model	Siemens 6EV3053-0DC
Input Voltage (selectable)	93–132 V AC or 185–264 V AC
Input Frequency	47–63 Hz
Nominal Output	24 V DC
Output Current	2 A (continuous), 2.5 A (surge)
Output Power	48 W
Ripple and Noise	< 50 mVpp
Hold-up Time	20 ms (at 230 V AC)
Dimensions (W x H x D)	60 mm x 125 mm x 110 mm
Weight	0.75 kg
Efficiency	> 85% (at nominal load)

Protection Circuits and Safety Features

This power supply includes comprehensive protection mechanisms for reliable system operation. Overvoltage protection clamps the output at 28 V DC, safeguarding sensitive electronic components. Short-circuit protection limits the current to 2.5 A and automatically resets when the fault clears. Additionally, the unit incorporates thermal shutdown at 80°C, preventing damage from excessive ambient temperatures.

Mechanical Design and Mounting Options

The Siemens 6EV3053-0DC features a compact 60 mm wide housing, fitting easily into standard S5 racks. The unit weighs 0.75 kilograms, requiring no additional mechanical support for secure installation. Front-accessible screw terminals accept wires from 0.5 mm² to 2.5 mm² for straightforward connections. A green LED on the front panel indicates proper output voltage, while a red LED signals fault conditions.

Thermal Performance and Environmental Ratings

This power supply operates reliably in ambient temperatures from 0°C to 60°C without forced cooling. The unit derates its output current by 3% per degree Celsius above 50°C to maintain safe operation. Convection cooling through the ventilated housing dissipates heat effectively in normal conditions. The enclosure carries an IP20 protection rating, suitable for clean industrial environments.

System Integration and Application Notes

You can install this power supply in any S5-100U or S5-115U rack slot for distributed power configurations. The unit connects in parallel with additional power supplies for increased capacity or redundancy. For optimal performance, maintain a minimum load of 5% of the rated current. Always connect the protective earth terminal before energizing the unit. This power supply works seamlessly with all standard S5 I/O and communication modules.