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Should the metal parts of the XB4 range be earthed?

If an XB4 button has to be installed on an insulating support, the metal parts of this button must always be earthed.

There are no earthing plates specific to the XB4 range. Simply use those for the old XB2 range: part numbers XALZ01 to XALZ05, where the last digit indicates the number of drill holes in the plate.

The best way around the problem of mounting a button on an insulating support is to use the XB5 plastic range.

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