IEC 60309-2-2021 Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes – Part 2: Dimensional compatibility requirements for pin and contact-tube accessories.
This document applies to plugs, fixed or portable socket-outlets, and appliance inlets, hereinafter referred to as accessories, 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 1 25 A, primarily intended for industrial use, either indoors or outdoors.
These accessories are intended to be installed by instructed persons or skilled persons only.
NOTE 1 All references for accessories with a rated current of more than 1 25 A in IEC 60309-1 are not applicable to this document.
This document applies to accessories with pins and contact-tubes of standardized configurations.
This document applies to accessories, for use when the ambient temperature is normally within the range −25 °C to 40 °C.
The use of these accessories on building sites and for agricultural, commercial and domestic applications is not precluded.
This document applies to accessories with screwless-type terminals or insulation piercing terminals, with a rated current up to and including 32 A for series I and 30 A for series II.
Socket-outlets or appliance inlets incorporated in or fixed to electrical equipment are within the scope of this document. This document also applies to accessories intended to be used in extra-low voltage installations.
NOTE 2 This document does not apply to accessories primarily intended for domestic and similar general purposes.
In locations where special conditions prevail, for example on board ship or where explosions are liable to occur, additional requirements can be necessary.
2 Normative references
Clause 2 of IEC 60309-1 :2021 applies except as follows:
Additional normative references:
IEC 60309-1 :2021 , Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes – Part 1: General requirements
IEC 60364-4-41 , Low-voltage electrical installations – Part 4-41: Protection for safety – Protection against electric shock
3 Terms and definitions
Clause 3 of IEC 60309-1 :2021 applies except as follows:
Additional terms and definitions:
3.201 phase inverter
plug or appliance inlet with operating means to interchange the position of two phase-pins without disconnecting them from the conductors
3.202 solid pin
pin made from a single homogeneous material, without holes, slots, slits or similar outside the terminal area
4 General
Clause 4 of IEC 60309-1 :2020 applies except as follows:
4.1 Replace the fifth paragraph by the following:
In this document:
2P + E covers both 2P + E and 1 P + N + E and
3P + E covers both 3P + E and 2P + N + E
unless specifically excluded (see Table 208).
Additional subclause:
4.201 If gauges are used, they shall be of hardened steel, all corners shall be slightly roundedoff with a maximum radius of 0,1 mm and, if not otherwise specified, the surface finish for all measurement surfaces shall be N8 minimum.IEC 60309-2 pdf download.