This CBE switch is a 3 position switch with MOMENTARY/OFF/MOMENTARY operation that has 2 additional terminals to allow it to be wired as a polarity reversing switch that can run a DC motor in both directions, e.g. for use with electric windows, electric aerials, central locking etc.
 
Using the centre 3 terminals it can be wired as a standard 3 position switch to send momentary power from a common input to one of 2 circuits (the switch is sprung loaded and returns to the centre position when released). 
 
Using the additional 2 terminals, the output terminals can be connected to ground by default and then one or the other becomes connected to +12V depending on the switch position.
 
This switch is a 'flat' design that uses the entire surface of the module as the switch face and is a more contemporary design than their standard range of Unipolar switches.
 
Cable connection is 4.8mm blade terminals.
 
CBE modular components are used by many OEM converters of campervans, caravans, motorhomes and leisure vehicles and provide a very professional finish to your electrical installation.