This part of IEC 60309 applies to self-contained products that combine within a single enclosure, a socket-outlet or connector according to IEC 60309-1 or IEC 60309-2 and a switching device, with a rated operating voltage not exceeding 690 V d.c. or a.c. and 500 Hz , and a rated current not exceeding 250 A, primarily intended for industrial use, either indoors or outdoors.
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