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IEC 60309-4-2021 pdf download
IEC 60309-4-2021 pdf download.Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes – Part 4: Switched socket-outlets with or without interlock. Clause 1 of IEC 60309-1 :2021 or of IEC 60309-2:2021 applies as follows: Replace the first two paragraphs by the following: This part of IEC 60309 applies...