30
NOTE!
A residual current circuit breaker for the AC connecting cable may be required de-
pending 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 circuit
breaker type A in individual cases and depending on local conditions. For this reason, Fro-
nius recommends that you use a residual current circuit breaker suitable for frequency con-
verters.
Additional exter-
nal AC and/or DC
disconnect
Depending on the installation, an additional external AC and/or DC disconnect may be re-
quired if the inverter is installed in a location not easily accessible to utility or fire personnel.
Contact your local authorities for additional information.
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