Safety instructions
General safety instructions
You operate this device with electricity. Improper usage of the device
entails the risk of physical injury or significant property damage. The
proper and safe operation of this device depends on proper handling
during transportation, proper storage and installation, and careful
operation and maintenance procedures.

Before connecting any cable, read this document, and the safety
instructions and warnings.
Operate the device with undamaged components exclusively.
The device is free of any service components. In case of a damaged
or malfunctioning device, turn off the supply voltage and return the
device to Hirschmann for inspection.
Certified usage
Use the device solely for the application cases described in the
Hirschmann product information, including this manual.
Operate the device solely according to the technical specifications.

Installation site requirements
Install the device in a fire enclosure according to IEC 60950-1.
If installed in a living area or office environment, the device must be
operated only in switch cabinets with fire protection characteristics
according to IEC 60950-1.
Only when using the PoE power supply unit RPS90/48V HV:
Install this device only in a switch cabinet or in an operating site with
restricted access, to which maintenance staff have exclusive access.
Strain relief
Note: If the strain relief is insufficient, there is a potential risk of torsion,
contact problems and creeping interruptions.
Relieve the connection points of cables and lines from mechanical
stress.
Design strain reliefs in such a way that they help prevent any
mechanical damage to cables, wires or conductors caused by external
influences or their own weight.
To help prevent damage to device connections, connectors and
cables, follow the instructions for proper installation in accordance with
DIN VDE 0100-520:2013-06. sections 522.6. 522.7 and 522.13.
Device casing
Only technicians authorized by the manufacturer are permitted to open
the casing.
Never insert pointed objects (narrow screwdrivers, wires, etc.) into the
device or into the connection terminals for electric conductors. Do not
touch the connection terminals.
Keep the ventilation slits free to ensure good air circulation.
See “General technical data” on page 64.
Mount the device in the vertical position.
At ambient air temperatures > +60 °C (+140 °F):
The surfaces of the device housing may become hot. Avoid touching
the device while it is operating.
Qualification requirements for personnel
Only allow qualified personnel to work on the device.
Qualified personnel have the following characteristics:
Qualified personnel are properly trained. Training as well as practical
knowledge and experience make up their qualifications. This is the
prerequisite for grounding and labeling circuits, devices, and systems
in accordance with current standards in safety technology.
Qualified personnel are aware of the dangers that exist in their work.
Qualified personnel are familiar with appropriate measures against
these hazards in order to reduce the risk for themselves and others.
Qualified personnel receive training on a regular basis.
National and international safety regulations
Verify that the electrical installation meets locally or nationally applicable
safety regulations.
Grounding the device
The device is grounded via the separate ground screw on the bottom left
of the front side of the device.
Use a wire diameter for the ground conductor that is no smaller than
the diameter of the supply voltage connection, however of at least 1.0
mm² (AWG16).
Ground the device before connecting any other cables.
Disconnect the grounding only after disconnecting all other cables.
Shielding ground
The overall shield of a connected shielded twisted pair cable is connected
to the grounding connector on the front panel as a conductor.
Beware of possible short circuits when connecting a cable section with
conductive shielding braiding.
Supply voltage
The supply voltage is electrically isolated from the housing.
The devices are designed for operation with Safety Extra-low Voltage
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