IEC 60309-4:2021 

Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 4: Switched socket-outlets with or without interlock


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IEC 60309-4:2021 applies to self-contained products primarily intended for industrial use, either indoors or outdoors that combine the following items within a single enclosure:
– a fixed or portable socket-outlet according to IEC 60309-1 or IEC 60309-2 with a rated operating voltage not exceeding 1 000 V DC or 1 000 V AC with a frequency not exceeding 500 Hz and a rated current not exceeding 800 A;
– a switching device.
This second edition cancels and replaces the first edition published in 2006 and Amendment 1:2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
– updated in order to take into account the technical revisions to IEC 60309-1 and to IEC 60309-2.
This document is to be read in conjunction with IEC 60309-1:2021 and with IEC 60309‑2:2021.

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Additional information

Publication typeInternational Standard
Publication date2021-06-18
Available language(s)English/French, Spanish
TC/SCTC 23/SC 23H - Plugs, Socket-outlets and Couplers for industrial and similar applications, and for Electric Vehiclesrss
ICS29.120.30 - Plugs, socket-outlets, couplers
Stability date  2025
File size975 KB

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