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4.2.1 Head type A, AX, B, IAC, IAX, IB
4.2.1.1 Separate wiring
Each contact has its own supply
Separate wiring / Single contact (SPST)
Cable colour
Black
Black
White
White
Red
Red
Blue
Blue
Yellow
Yellow
Separate wiring / Double contact(SPDT)
Cable colour
White
Orange
Brown
White
Black
Blue
White
Red
Yellow
For separate wiring in SPDT form, exceeding one switch point, the white colour wire is always the
common wire.
4.2.1.2 Common wiring
Each contact is fed by one wire common for all contacts
Common wiring / Single contact (SPST)
Cable colour
White (COM)
Brown
Orange
Black
Red
Blue
Yellow
Common wiring / Double Contact(SPDT)
Cable colour
White (COM)
Grey
Green
Orange
Brown
Black
Blue
Red
Yellow
For common wiring, higher wire number (normally in white colour), will be always the common
wire to connect to voltage supply.
