NOTE!
A residual current circuit breaker for the AC connecting cable may be required
depending on local regulations, the grid operator, and other conditions.
A type A residual current circuit breaker with a trip current of at least 100 mA is generally
sufficient in this case. However, false alarms can be triggered for the residual current cir-
cuit breaker type A in individual cases and depending on local conditions. For this
reason, Fronius recommends that you use a residual current circuit breaker suitable for
frequency converters.
Additional
external AC
and/or DC dis-
connect
Depending on the installation, an additional external AC and/or DC disconnect may be
required if the inverter is installed in a location not easily accessible to utility or fire per-
sonnel. Contact your local authorities for additional information.
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