18
Note!
Local regulations, the electricity retailer or other factors may require a residual-current pro-
tective device in the AC connection lead.
A type A residual-current circuit breaker with a trip current of at least 100 mA is generally
sufficient in this case. In particular cases, and depending on local factors, however, the
type A residual-current circuit breaker may trip at the wrong time. For this reason, Fronius
recommends that a residual-current circuit breaker that is suitable for frequency converters
should be used.
RCD
National Standards
?
Type A
YES
I
ΔN
≥ 100 mA
§
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