A packet cam switch comprises a plurality of switch chamber modules arranged adjacently and configured identically to one another. Each switch chamber module comprises a separate power switch associated with a circuit. An autonomous actuating housing accommodates an indexing mechanism for a switch shaft. The switch shaft is coupled via a gear drive to a cam slide. The cam slide is located between the block of switch chamber modules and the housing for the actuating mechanism. The housing for the actuating mechanism is configured for a standard design of the packet cam switch having three interconnected switch chamber modules. The electrical connections of the packet cam switch are located on the narrow sides of the individual switch chamber modules. For finished packet cam switches, there are connections on two sides, wherein the connections are at the same height on one side.