For revision 2.0 and ->
Check the correct software from the rating plate on
the side of the relay.
If you replace MB5 with MB6 you have to also renew the top
panel.Top panel ordering codes are:
1VCF750153001, 1VCF750153002, 1VCF750153003,
1VCF7501530041VCF750153005, 1VCF750153006, 1VCF750165001,
1VCF7501650021VCF750165003, 1VCF750099001, 1VCF750099002,
1VCF7500990031VCF750099004, 1VCF750099005,
1VCF750099006