BS IEC 60309-2. Plugs, socket-outlets and couplers for industrial purposes. Part 2. Dimensional interchangeability requirements for pin and contact-tube accessories|Interlocks, Interchangeability, Electric plugs, Electric terminals, Dimensions, Dimensional measurement, Electrical safety, Electric sockets, Electric socket contacts, Cable junctions, Protected electrical equipment, Ambient temperature, Mechanical testing, Voltage, Industrial, Rated current, Electrical components, Electric cables, Testing conditions, Electric pins, Electric contacts, Electric conductors, Couplers, Marking, Electric connectors