Safety instructions
8
RCMA421H_D00069_00_M_XXEN/05.2014
2.3 Device-specific safety information
According to UL943 every residual current monitor and
the associated measuring current transformer is to be
tested in pairs. The relevant serial number for the trans-
former is imprinted on the enclosure of the RCMA421H.
The residual current monitor and the measuring current
transformer assigned to it may only be used or inter-
changed in pairs.
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