scope:

This section of IEC 947-6 applies to control and protective switching devices (or equipment) (CPS), the main contacts of which are intended to be connected to circuits of rated voltage not exceeding 1000 V a.c. or 1500 V d.c. CPS's are intended to provide both protective and control functions for remotely controlled circuits. They may also fulfill additional functions, such as isolation. The object of this section is to state: - The characteristics of CPS's; - The conditions with which CPS's shall comply reference to their operation and behaviour, their dielectric properties, the degree of protection provided by their enclosure where applicable; - The test intended to verify that these conditions have been met, and the methods to be adopted for these tests; - The information to be marked on or given with the CPS's.