Wiegmann all products Technical Specifications
DATA SUBJECT TO CHANGE WITHOUT NOTICE
ENCLOSURE DEFINITIONS AND CLASSIFICATIONS
TECHNICAL DATA
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Industry Definitions
The National Electrical Manufacturers Association (NEMA) is
a US Manufacturers Organization which actively promotes
standardized product specifications for electrical apparatus.
While NEMA does not actually test products, it establishes
the performance criteria for enclosures intended for specific
environments.
NEMA standards describe each type of enclosure in general
and functional terms, and specifically omits reference to
construction details. In other words NEMA specifies what an
enclosure must do, not how to manufacture it. This is also
true about the EN 60.529/IEC 529.
NEMA performance criteria and test methods are used by
Underwriters Laboratories (UL) and Canadian Standards
Association (CSA) as guidelines for investigation and listing
of electrical enclosures.
The tested enclosures are then authorized to carry a label
by UL or CSA to prove it has passed the required tests and
meets the applicable UL and CSA standard.
NEMA CLASSIFICATIONS
Definitions – Non-Hazardous Locations
Type 1
Enclosures are intended for indoor use primarily to
provide a degree of protection against contact with
the enclosed equipment. NEMA Standard 1-10-1979.
Type 2
Enclosures are intended for indoor use primarily to
provide a degree of protection against limited amounts
of falling water and dirt. NEMA Standard 1-10-1979.
Type 3
Enclosures are intended for outdoor use primarily to
provide a degree of protection against windblown dust,
rain, sleet, and external ice formation. NEMA Standard
1-10-1979.
Type 3R
Enclosures are intended for outdoor use primarily to
provide a degree of protection against falling rain, sleet,
and external ice formation. (May be ventilated). NEMA
Standard 1-10-1979.
Type 3S
Enclosure are intended for outdoor use primarily to provide a degree of protection against windblown dust,
rain, sleet, and to provide for operation of external
mechanisms when ice laden. NEMA Standard 1-10-1979.
Type 4
Enclosures are intended for indoor or outdoor use
primarily to provide a degree of protection against windblown dust and rain, splashing water, and hose-directed
water. NEMA Standard 1-10-1979.
Type 4X
Enclosures are intended for indoor or outdoor use
primarily to provide a degree of protection against
corrosion, windblown dust and rain, splashing water,
and hose-directed water. NEMA Standard 1-10-1979.
Type 5
Enclosures are intended for indoor use primarily to
provide a degree of protection against settling airborne
dust, falling dirt, and dripping non-corrosive liquids.
NEMA Standard 5-25-1988.
Type 6
Enclosures are intended for indoor or outdoor use
primarily to provide a degree of protection against the
entry of water during occasional, temporary submersion
at a limited depth. NEMA Standard 1-10-1979.
Type 6P
Enclosures are intended for indoor or outdoor use
primarily to provide a degree of protection against the
entry of water during prolonged submersion at a limited
depth. NEMA Standard 1-10-1979.
Type 11
Enclosures are intended for indoor use primarily to
provide, by oil submersion, a degree of protection to
enclosed equipment against the corrosive effects of
liquids and gases. NEMA Standard 1-10-1979.
Type 12
Enclosures are intended for indoor use primarily to provide
a degree of protection against dust, falling dirt, and
dripping non-corrosive liquids. NEMA Standard 1-10-1979.
Type 12K
Enclosures with knock-outs are intended for indoor use
primarily to provide a degree of protection against dust,
falling dirt, and dripping non-corrosive liquids other than
at knock-outs. NEMA Standard 1-10-1979.
Type 13
Enclosures are intended for indoor use primarily to
provide a degree of protection against dust, spraying
of water, oil, and non-corrosive coolant. NEMA Standard
1-10-1979.
Definitions – Hazardous Locations
Type 7
Enclosures are for use indoors in locations classified as
Class I, Groups A, B, C, or D, as defined in the National
Electrical Code. NEMA Standard 1-10-1979.
Type 8
Enclosures are for indoor or outdoor use in locations
classified as Class I, Groups A, B, C, or D, as defined in
the National Electrical Code. NEMA Standard 1-10-1979.
Type 9
Enclosures are for indoor use in locations classified as
Class II, Groups E, F, or G as defined in the National
Electrical Code. NEMA Standard 5-19-1986.
Type 10
Enclosures are constructed to meet the applicable
requirements of the Mine Safety and Health
Administration. NEMA Standard 1-10-1979.
DATA SUBJECT TO CHANGE WITHOUT NOTICE
ENCLOSURE TYPES NON-HAZARDOUS LOCATIONS
ENCLOSURE DEFINITIONS AND CLASSIFICATIONS
TECHNICAL DATA
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TYPE
DESIGNATION
1
2
3
3R
4
4X
6
12
13
NATIONAL ELECTRICAL MANUFACTURERS
ASSOCIATION (NEMA STANDARD 250)
AND ELECTRICAL AND ELECTRONIC MFG.
ASSOCIATION OF CANADA (EEMAC)
Enclosures are intended for indoor use primarily to
provide a degree of protection against contact with
the enclosed equipment or locations where unusual
service conditions do not exist.
Enclosures are intended for indoor use primarily
to provide a degree of protection against limited
amounts of falling water and dirt.
Enclosures are intended for outdoor use primarily
to provide a degree of protection against windblown dust, rain, and sleet; undamaged by the
formation of ice on the enclosure.
Enclosures are intended for outdoor use primarily
to provide a degree of protection against falling
rain and sleet; undamaged by the formation of ice
on the enclosure.
Enclosures are intended for indoor or outdoor use
primarily to provide a degree of protection against
windblown dust and rain, splashing water, and
hose-directed water; undamaged by the formation
of ice on the enclosure.
Enclosures are intended for indoor or outdoor use
primarily to provide a degree of protection against
corrosion, windblown dust and rain, splashing
water, and hose-directed water; undamaged by the
formation of ice on the enclosure.
Enclosures are intended for use indoors or outdoors
where occasional submersion is encountered.
Enclosures are intended for indoor use primarily to
provide a degree of protection against dust, falling
dirt, and dripping non-corrosive liquids.
Enclosures are intended for indoor use primarily
to provide a degree of protection against dust,
spraying of water, oil, and non-corrosive coolant.
This material is reproduced from NEMA. The preceding descriptions, however, are not intended to be
complete representations of National Electrical
Manufacturers Association standards for enclosures
nor those of the Electrical and Electronic
Manufacturers Association of Canada.
UNDERWRITERS LABORATORIES INC.
(UL 50 AND UL 508)
Indoor use primarily to provide protection against
contact with the enclosed equipment and against
a limited amount of falling dirt.
Indoor use to provide a degree of protection against
limited amounts of falling water and dirt.
Outdoor use to provide a degree of protection
against windblown dust and windblown rain; undamaged by the formation of ice on the enclosure.
Outdoor use to provide a degree of protection
against falling rain; undamaged by the formation
of ice on the enclosure.
Either indoor or outdoor use to provide a degree of
protection against falling rain, splashing water, and
hose-directed water; undamaged by the formation
of ice on the enclosure.
Either indoor or outdoor use to provide a degree of
protection against falling rain, splashing water, and
hose-directed water; undamaged by the formation
of ice on the enclosure; resists corrosion.
Indoor or outdoor use to provide a degree of
protection against entry of water during temporary
submersion at a limited depth; undamaged by the
formation of ice on the enclosure.
Indoor use to provide a degree of protection against
dust, dirt, fiber flyings, dripping water, and external
condensation of non-corrosive liquids.
Indoor use to provide a degree of protection against
lint, dust seepage, external condensation and
spraying of water, oil, and non-corrosive liquids.
This material is reproduced from Underwriters Laboratories Inc. Standard for Safety for Cabinets and Boxes,
UL 50, Copyright 1997 and Industrial Control Equipment,
UL 508, Copyright 1996 by Underwriters Laboratories Inc.
Underwriters Laboratories Inc. (UL) shall not be responsible to anyone for the use of or reliance upon a UL
Standard by anyone. UL shall not incur any obligation
or liability for damages, including consequential damages,
arising out of or connection with the use, interpretation
of, or reliance upon a UL Standard.
CANADIAN STANDARDS ASSOCIATION
(STANDARD C22.2 NO. 94)
General purpose enclosure. Protects against
accidental contact with live parts.
Indoor use to provide a degree of protection
against dripping and light splashing of non-corrosive liquids and falling dirt.
Indoor or outdoor use; provides a degree of
protection against rain, snow, and windblown
dust; undamaged by the external formation of
ice on the enclosure.
Indoor or outdoor use; provides a degree of
protection against rain and snow; undamaged by
the external formation of ice on the enclosure.
Indoor or outdoor use; provides a degree of
protection against rain, snow, windblown dust,
splashing and hose-directed water; undamaged
by the external formation of ice on the enclosure.
Indoor or outdoor use; provides a degree of
protection against rain, snow, windblown dust,
splashing and hose-directed water; undamaged
by the external formation of ice on the enclosure;
resists corrosion.
Indoor or outdoor use; provides a degree of
protection against the entry of water during
temporary submersion at a limited depth;
undamaged by the external formation of ice on
the enclosure; resists corrosion.
Indoor use; provides a degree of protection
against circulating dust, lint, fibers, and flyings;
dripping and light splashing of non-corrosive
liquids; not provided with knockouts.
Indoor use; provides a degree of protection
against circulating dust, lint, fibers, and flyings;
seepage and spraying of non-corrosive liquids,
including oils and coolants.
This material is reproduced from the Canadian
Standards Association.
PROVIDES A DEGREE OF PROTECTION AGAINST
TYPE OF ENCLOSURE
THE FOLLOWING ENVIRONMENTAL CONDITIONS
1* 2* 4 4X 5 6 6P 11 12 12K 13
I Incidental contact with the enclosed equipment
• • •• •• • ••• •
Falling dirt
• • •• •• • ••• •
Falling liquids and light splashing
••• • • ••• •
Dust, lint, fibers, and flyings†
•• •• • •• •
Hose down and splashing water
•• • •
Oil and coolant seepage
•• •
Oil or coolant spraying and splashing
•
Corrosive agents
•••
Occasional temporary submersion
••
Occasional prolonged submersion
•
COMPARISON OF SPECIFIC NON-HAZARDOUS APPLICATIONS INDOOR LOCATIONS
*These enclosures may be ventilated. However, Type 1 may not provide protection against small particles of falling dirt when ventilation
is provided in the enclosure top.
†These fibers and flyings are non-hazardous materials and are not considered Class III type ignitable fibers or combustible flyings.
For Class III type ignitable fibers or combustible flyings see the National Electrical Code, Section 500-6(a).
®
R
DATA SUBJECT TO CHANGE WITHOUT NOTICE
ENCLOSURE DEGREES OF PROTECTION
TECHNICAL DATA
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In order to protect the sometimes delicate equipment
against foreign objects there are protection standards
developed which grade the degree of protection level
achieved. It is important to know that there are two such
standards for the degree of protection by an enclosure.
• The European specification: IP-code according to
EN 60.529 / IEC 529
• The American specification: TYPE-code according to
NEMA 250
The European IP-Code
To help the design engineer identify the degree of protection
provided by an enclosure, EN60.529/IEC 529 (International
Electrotechnical Commission) was introduced. The latest
version was issued 11/89. (Correct at date of printing).
Both harmonized standards classify the extent to which an
enclosure will resist the ingress of solid bodies and water
under designated tests.
After successful testing the enclosure will be allocated
a classification code with the letters IP (International
Protection) prefixing that code.
Further explanation of the degree of protection provided
by an enclosure indicated by the IP-code is detailed below:
Code letters
(International Protection)
IP 55 W
First Characteristic Numeral
(dust protection, numerals 0-6, or letter X)
Second Characteristic Numeral
(water protection, numerals 0-8, or letter X)
Optional Letter for Application in Specified Weather Conditions
(normally agreed between user and manufacturer, example: Rain hood)
DATA SUBJECT TO CHANGE WITHOUT NOTICE
ENCLOSURE DEGREES OF PROTECTION
TECHNICAL DATA
L5
THE IP SCALE
2ND NUMERAL:
DEGREE OF PROTECTION WITH RESPECT TO HARMFUL INGRESS OF WATER
012345678
Protected
Protected Protected
Protected
Non against
against against
against
Protected Protected Protected Protected
protected dripping
dripping dripping
splashing
against against against against
water
water of water of
water
water jets heavy seas immersion submersion
±15° angle ±60° angle
Test time Test time Test time 10 Test time Test time Test time Test time Test time
10 mins 10 mins mins max 200 10 mins 1 min/m 1 min/m 30 mins 30 mins
0 Non Protected
IP 00 IP 01 IP 02 10l./min 10l./min 12.5l./min 100l./min
80kN/m 80kN/m 30kN/m 100 kN/m
Protected against
1 solid objects greater IP 10 IP 11 IP 12 IP 13
than Dia. 50 mm
Protected against
2 solid objects greater IP 20 IP 21 IP 22 IP 23
than Dia. 12 mm
Protected against
3 solid objects greater IP 30 IP 31 IP 32 IP 33 IP 34
than Dia. 2.5 mm
Protected against
4 solid objects greater IP 40 IP 41 IP 42 IP 43 IP 44 IP 45 IP 46
than Dia. 1.0 mm
5 Dust protected IP 54 IP 55 IP 56
6 Dust tight IP 65 IP 66 IP 67 IP 68
1ST NUMERAL:
DEGREE OF PROTECTION
WITH RESPECT TO PERSONS
AND SOLID OBJECTS.
NEMA TYPE IP23 IP30 IP32 IP55 IP64 IP65 IP66 IP67
1
•
2
•
3
•
3R
•
4
•
4X
•
6
•
12
•
13
•
NEMA TO IEC – ENCLOSURE RATING CROSS-REFERENCE*
*Note: This cross-reference table is an approximation of NEMA and IEC classifications for reference only. Please consult the appropriate agency's requirements
and test qualifications for complete information.
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