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Connecting the unit
CAUTION
CAUTION
34
Permanent connection
Risk of property damage and personal injury from improper instal-
lation
• In the case of a fixed electrical connection, install an all-pole disconnecting
unit with at least 3 mm (0.12 in) contact opening in front of the unit.
Install an all-pin separating device if the unit will be connected
permanently to the electrical supply mains.
Risk of property damage and personal injury from improper instal-
lation
• The plug-in connection must be readily accessible.
Plug-in connection
If the unit is connected with a plug to the electrical supply mains, use
plugs and sockets according to IEC60309.
The socket must be readily accessible so that the unit can be
disconnected from the electrical supply mains at any time.
Insulation monitoring
In the case of an unearthed network (IT network), the unit can be
incorporated into the insulation monitoring.
Fault current device
Image: RCD switch type A circuit symbol
The unit can be connected to a fault current device.
If a residual-current circuit breaker is used, the residual-current circuit
breaker installed must be type A (RCD type A ) to ensure that AC fault
currents and pulsating DC fault currents are detected.
The unit generates a small fault current through use of special
electronic components. To ensure that the residual current device does
not trip during normal operation, each unit should have its own residual
current device.
Installation instructions
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