IEC 60309-1:1999/AMD2:2012

IEC 60309-1 ®
Edition 4.0 2012-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Plugs, socket-outlets and couplers for industrial purposes –
Part 1: General requirements
Prises de courant pour usages industriels –
Partie 1: Règles générales
IEC 60309-1:1999/A2:2012
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IEC 60309-1 ®
Edition 4.0 2012-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Plugs, socket-outlets and couplers for industrial purposes –

Part 1: General requirements
Prises de courant pour usages industriels –

Partie 1: Règles générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 29.120.30 ISBN 978-2-83220-118-3

– 2 – 60309-1 Amend.2 © IEC:2012

FOREWORD
This amendment has been prepared by subcommittee 23H: Industrial plugs and socket-outlets,
of IEC technical committee 23: Electrical accessories.
The text of this amendment is based on the following documents:
FDIS Report on voting
23H/282/FDIS 23H/285/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
1 Scope
Replace the first paragraph by:
This standard applies to plugs and socket-outlets, cable couplers and appliance couplers, with
a rated operating voltage not exceeding 1 000 V d.c. or a.c. and 500 Hz a.c., and a rated
current not exceeding 800 A, primarily intended for industrial use, either indoors or outdoors.
These accessories are intended to be installed by instructed persons (IEC 60050-195:1998,
Amendment 1:2001, 195-04-02) or skilled persons (IEC 60050-195:1998, Amendment 1:2001,
195-04-01) only.
Replace the fourth paragraph – introduced by Amendment 1 – by:
This standard 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.
3 Normative references
Replace IEC 60695-2-1:1994 by:
IEC 60695-2-11, Fire hazard testing –Part 2-11: Glowing/hot-wire based test methods – Glow-
wire flammability test method for end-products
Add the following references:
60309-1 Amend.2 © IEC:2012 – 3 –
IEC 60309-4, Plugs, socket-outlets and couplers for industrial purposes – Part 4: Switched
socket-outlets and connectors with or without interlock
IEC 60695-10-2, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test
4.1 General requirements
Add a new fourth paragraph:
Accessories shall have a minimum degree of protection IP23 according to IEC 60529.
5.1
Add the following new values
750 V
1 000 V
5.2
Add the following new values in Table 1:
315 300
400 350
630 500
800 600
Add after Table 1 the following Note 2:
NOTE 2 This table does not provide correspondence between series I and series II values. It is only a list of
preferred ratings
6.1.2
Replace the text introduced by Amendment 1 by the following:
"according to degrees of protection in accordance with IEC 60529 (with a minimum IP23, see
4.1)"
Add the following new subclause:
6.1.8 according to accessibility to live parts:
– accessories providing for IPXXB
– accessories providing for IP2X
– accessories providing for IPXXD
– accessories providing for IP4X
7.1
Replace, in the third dashed item, “alternative” by “alternating”.
Replace the seventh dashed item by “degree of protection”.
7.2
Replace the second paragraph after the list of symbols by:

– 4 – 60309-1 Amend.2 © IEC:2012
Marking of degree(s) of protection on plugs and appliance inlets is only valid when those are
in engagement with a complementary accessory or with an attached cap, if any.
7.3
Replace in the third paragraph:
“the symbol for degree of protection, if required”
by:
"the degree of protection".
7.6
Replace the existing third sentence by:
After the humidity treatment of Clause 18, the marking is rubbed by hand for 15 s with a
piece of cloth soaked in water and again for 15 s with a piece of cloth soaked in petroleum
spirit.
It is recommended that the petroleum spirit used consist of a solvent hexane with an aromatic
content of maximum 0,1 volume percentage, a Kauri-Butanol value of approximately 29, an
initial boiling point of approximately 65 °C, a dry point of approximately 69 °C and a density of
approximately 0,68 g/ cm .
Table 2
Replace the value “690” by “1 000”.
7.9
Replace the last paragraph of this subclause – introduced by Amendment 1 – by:
This marking shall appear on the accessory. It may also appear on the accompanying
instruction sheet, the smallest package unit or the manufacturer's documentation, if any.
7.10
Replace the existing text of this subclause – introduced by Amendment 1 – by:
For terminals, the connection and disconnection procedures shall, if necessary, be indicated
on the product, on the smallest package unit or on the manufacturer’s documentation.
Table 3 – Size for connectable conductors
Add the following new values at the end of table, previously modified by Amendment 1:

315 300 95 to 150 000 to 300 120 to 185 250 to 350 25 4
350 120 to 185 250 to 350 150 to 240 300 to 500 35 3
400  150 to 240 300 to 500 185 to 300 350 to 600 35 3
Exceeding
500 185 to 300 350 to 600 240 to 400 500 to 800 35 2
630 600 240 to 400 500 to 800 300 to 500 600 to 1 000 50 1
800  300 to 500 600 to 1 000 400 to 630 800 to 1 250 50 0

60309-1 Amend.2 © IEC:2012 – 5 –
11.1.1
Add after the second paragraph of this subclause introduced by Amendment 1:
Compliance is checked by inspection.
Table 4-2
Add the following new values at the end of the table – modified by Amendment 1:
240,0 28,6 464 20,0
300,0 28,6 464 22,7
400,0 31,8 495 50,0
500,0 38,1 572 50,0
630,0 44,5 660 70,3
Table 4-3
Add the following new values at the end of table – modified by Amendment 1:
240 578
300 578
400 690
500 778
630 965
12 Interlocks
Replace the existing clause by:
12.1 Accessories with a rated current above 250 A or accessories not intended to make and
break under load shall be provided with an interlock according to IEC 60309-4 or with the
provision for an interlock to be used according to IEC 60309-4.
Requirements for interlocks are given in IEC 60309-4.
Compliance is checked by inspection and by the tests of IEC 60309-4.
12.2 Replace the existing text of this subclause by "Void".
12.3 Replace the existing text of this subclause by "Void".
15.8
Replace the existing first paragraph by:
Socket-outlets having a rated operating voltage exceeding 50 V a.c. or 120 V d.c. shall be
provided with an earthing contact.
16.9
Replace the existing first paragraph by:

– 6 – 60309-1 Amend.2 © IEC:2012
Plugs and connectors having a rated operating voltage exceeding 50 V a.c. or 120 V d.c. shall
be provided with an earthing contact.
17.3
Replace the existing first paragraph by:
Appliance inlets having a rated operating voltage exceeding 50 V a.c. or 120 V d.c. shall be
provided with an earthing contact.
17.4
Replace the existing first paragraph by:
Appliance inlets shall not have specific means to allow the wiring of more than one connector
(see also 16.10).
18.2
Delete the last paragraph.
Add after the first paragraph – introduced by Amendment 1 – the following:
When the first characteristic numeral is 3 or 4, and for degrees of protection up to and
including IPX4, where a drain hole is provided, the protection is satisfactory if the full
diameter of the probe does not pass through any opening other than through drain holes, in
which case the probe shall not touch live parts within the enclosure.
20 Breaking capacity
Replace the seventeenth paragraph by:
The test is made using the connections shown in Figure 5. For two-pole accessories the
selector switch C, connecting the metal support and the accessible metal parts to one of the
poles of the supply, is operated after half the number of strokes; for three-pole and three-pole
plus neutral accessories, the selector switch C is operated after one-third of the number of
strokes, and again after two-thirds of the number of strokes, so as to connect each pole in
turn.
Table 6 – Breaking capacity
Add the following new values at the end of Table 6:
315 300
400 from 251 to 800 NA NA NA
630 600
60309-1 Amend.2 © IEC:2012 – 7 –
Table 7 – Normal operation
Add the following new values at the end of Table 7:
315 300
-  350
400 -  251 to 800 NA NA 125 NA 125
-  500
630 600
Table 8
Add the following new values at the end of the existing table – introduced by Amendment 1:
315 300 rated current 150 185
350 rated current 185 240
400  rated current 240 300
500 rated current 300 400
630 600 rated current 400 500
800  rated current 500 630
Replace the existing three indents and paragraph immediately after Table 8 by:
The duration of the test is:
1 h for accessories having a rated current not exceeding 32 A;
2 h for accessories having a rated current exceeding 32 A but not exceeding 125 A;
3 h for accessories having a rated current exceeding 125 A but not exceeding 250 A.
For accessories having a rated current exceeding 250 A, the test shall continue until
thermal stabilization is attained. Thermal stabilization is considered to have occurred when
three successive readings, taken at intervals of not less than 10 minutes, show no further
increases of more than 1 K.
Table 9
Add the following new values at the end of the existing table – introduced by Amendment 1:
315 300 Under consideration 150
350 Under consideration 185
400  Under consideration 240
500 Under consideration 300
630 600 Under consideration 400
800  Under consideration 500
– 8 – 60309-1 Amend.2 © IEC:2012
Table 10
Add the following new values at the end of the existing table – introduced by Amendment 1:
2) 2)
315 300 66 150 - - –  65,5 –
2) 2) 2)
350  185 - - –  –  –
2) 2) 2)
400  240 - - –  –  –
2) 2) 2)
500  300 - - –  –  –
2) 2) 2)
630 600  400 - - –  –  –
2) 2) 2)
800  500 - - –  –  –
Table 11
Add the following new values at the end of the existing table – introduced by Amendment 1:
315 300 400 4,0
350 400 4,0
400  500 4,5
500 500 4,5
630 600 600 5,0
800  600 5,0
Table 12
Add the following new values at the end of the existing table – introduced by Amendment 1:
315 300 4
350 4
400  4
500 4
630 600 4
800  4
60309-1 Amend.2 © IEC:2012 – 9 –
Table 16
Replace the heading of the existing last column 5 by “Over 500 up to and including 690”.
Add the following new column 6 and footnote:
Over 690
up to and
including
a
1 000
a
Alternatively, creepage distances may be according to IEC 60664-1.

27 Resistance to heat, fire and tracking
Replace the title of this clause by:
27 Resistance to heat, to fire and to tracking
27.3
Replace the existing text of this subclause by the following:
Parts of insulating material are subjected to a ball-pressure test according to IEC 60695-10-2.
The test is made in a heating cabinet at a temperature of:

– 10 – 60309-1 Amend.2 © IEC:2012
(125 ± 5) °C for parts supporting live parts of rewirable accessories;
(80 ± 3) °C for other parts.
For materials which show deformation, this diameter shall not exceed 2 mm.
NOTE For elastomeric materials, a test is under consideration.
The test is not made on parts of ceramic material.
27.4
Replace the existing text of this subclause by the following:
External parts of insulating material and insulating parts supporting live parts of accessories
shall be resistant to abnormal heat and to fire.
Conductors cannot be considered as retaining the current-carrying parts.
In case of doubt, to determine whether an insulating part is necessary to retain the current-
carrying parts or the parts of the earthing circuit in position, the accessory is examined
without conductors while held in positions most likely to cause displacement of the current-
carrying parts or parts of the earthing circuit, with the insulating material in question removed.
Compliance is checked by the glow-wire test given in IEC 60695-2-11 with the following
specifications.
The temperature of the tip of the glow-wire is:
(650 ± 10) °C for parts of insulating material not necessary to retain current-carrying parts and
parts of the earthing circuits in position, even though they are in contact with them.
Tests are not made on glands and sealing compounds.
(850 ± 15) °C for parts of insulating material necessary to retain current-carrying parts and
parts of the earthing circuits in position.
The tip of the glow-wire is applied to the following places:
– in the middle of one external part for each part, with the exception of glands and sealing
compounds;
– in the middle of an insulating contact-carrying part for each material.
The tip is applied to flat surfaces and not to grooves, knock-outs, narrow recesses or sharp
edges and if possible not less than 9 mm from the edges of the accessories.
The test is made on one specimen. In case of doubt regarding the results of the test, the test
is repeated with two further specimens.
The accessories are considered to have withstood the glow-wire test if:
– there is no visible flame and no sustained glowing, or
– flame or glowing of the specimen or of the surroundings extinguish within 30 s after the
removal of the glow-wire, and the surrounding parts have not burned away completely.
There shall be no permanent ignition of the tissue paper.
27.5
...