Protective functions and safety features

Output overvoltage protection

Typ. 31.5 Vdc
Max. 34 Vdc

In the event of an internal power supply fault, a redundant circuit limits the maximum output voltage. In such a case the output switches off and automatically attempts to restart.

Protection class

IP20

EN/IEC 60529

Overtemperature protection

Yes

Output shutdown with automatic restart.
Temperature sensors are installed on critical components inside the device and switch off the device in safety-critical situations. This can happen, for example, if the ambient temperature is too high, ventilation is obstructed or derating requirements are not met. There is no correlation between the operating temperature and the switch-off temperature, as this depends on the input voltage, the load and the installation methods.

Protection against
input transients

MOV (metal oxide varistor)

For further information see EMC chapter

Input fuse

Included

Slow-blow fuse, not user-replaceable, with high braking power

Insulation resistance

Min. 500 MOhm

In the delivery state between input and output,
measured with 500 Vdc

Min. 500 MOhm

In the delivery state between input and PE (Protective Earth),
measured with 500 Vdc

Min. 500 MOhm

In the delivery state between output and PE,
measured with 500 Vdc

Min. 500 MOhm

In the delivery state between output and DC-OK contacts,
measured with 500 Vdc

Protection class

I

According to IEC 61140
PE (protective conductor) connection required

Touch current (leakage current)

Typ. 0.35 mA / 0.73 mA

At 230 Vac, 50 Hz, TN, TT / IT network

Max. 0.46 mA / 0.97 mA

At 264 Vac, 50 Hz, TN, TT / IT network