Load voltage supply

Fuse protection of the load voltage

The electrical fuse protection of the load voltage must be selected in such a way that the maximum current flowing is limited to 3 times the nominal current (max. 1 second)!

Load voltage supply

The device requires an additional load voltage of e.g. 48 V DC for operation.
In order to avoid equalizing currents on the protective conductor during operation, EN 60204-1:2018 provides for the possibility that the negative pole of the load voltage does not necessarily have to be connected to the protective conductor system (SELV).
For this reason, the load voltage supply should be designed as a SELV supply.