REFERENCE STANDARDS
EN 60309-1
Plugs, socket outlets and couples for industrial purposes
Part 1: General requirements.
EN 60309-2
Plugs, socket outlets and couples for industrial purposes.
Part 2: Dimensional interchangeability requirements for pin and contact-tube accessories of harmonised configurations.
EN 60309-4
Plugs, socket-outlets and couplers for industrial purposes.
Part 4: Switched socket-outlets and connectors with or without interlock.