Please see the attached contacts label of the adapted monobloc switch sub-assembly ZCMD41T3, which uses a special halogen-free cable for railway equipment. It complies to EN 50306 and EN 45545 standards. This label shows the numbering of the white wires you can use for the switch cabling, where 1 to 2 and 5 to 6 are normally closed, and 3 to 4 and 7 to 8 are normally open switch contacts.