Enclosure NEMA,
UL and CSA
Standards
|
| Enclosure
Rating |
NEMA
National Electrical Manufacturers Association (NEMA 250) |
UL
Underwriters Laboratories, Inc. (UL 50 and 508) |
CSA
Canadian Standards Association
(C22.2 No. 94-M91) |
| Type
1 |
Enclosures
are intended for indoor use primarily to provide a degree of protection
against the contact with the enclosed equipment. |
Indoor
use primarily to provide protection against contact with the enclosed
equipment and against a limited abount of falling dirt. |
General
purpose enclosure. Protects against accidental contact with live parts. |
| Type
2 |
Enclosures
are intended for indoor use primarily to provide a degree of protection
against limited amounts of falling water and dirt. |
Indoor
use to provide a degree of protection against contact with the enclosed
equipment and against a limited amount of falling dirt. |
Indoor
use to provide a degree of protection against dripping and light splashing
of noncorrosive liquids, and falling dirt. |
| Type
3 |
Enclosures
are intended for outdoor use primarily to provide a degree of protection
against rain, sleet, windblown dust, and damage from external ice
formation. |
Outdoor
use to provide a degree of protection against windblown dust and
windblown rain; undamaged by the formation of ice on the enclosure. |
Indoor
or outdoor use to provide a degree of protection against rain, snow, and
windblown dust; undamaged by the external formation of ice on the
enclosure. |
| Type
3R |
Enclosures
are intended for outdoor use primarily to provide a degree of protection
against rain, sleet, and damage from external ice formation. |
Outdoor
use to provide a degree of protection against falling rain;
undamaged by the formation of ice on the enclosure. |
Indoor
or outdoor use to provide a degree of protection against rain, snow;
undamaged by the external formation of ice on the enclosure. |
| Type
4 |
Enclosures
are intended for indoor and outdoor use primarily to provide a degree of
protection against windblown dust and rain, splashing water, hose-directed
water, and damage from external ice formation. |
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. |
Indoor
or outdoor use to provide a degree of protection against rain, snow, and
windblown dust; splashing and hose-directed water; undamaged by the
external formation of ice on the enclosure. |
| Type
4X |
Enclosures
are intended for indoor and outdoor use primarily to provide a degree of
protection against corrosion, windblown dust and rain, splashing water,
hose-directed water, and damage from external ice formation. |
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 rain, snow, and
windblown dust; splashing and hose-directed water; undamaged by the
external formation of ice on the enclosure; resists corrosion. |
| Type
6 |
Enclosures
are intended for indoor and outdoor use primarily to provide a degree of
protection againsthose-directed water, the entry of water during
occasional temporary submersion at a limited depth, and damage from
external ice formation. |
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
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. |
| Type
12 |
Enclosures
are intended for indoor use primarily to provide a degree of protection
against circulating dust, falling dirt, and dripping non-corrosive
liquids. |
Indoor
use to provide a degree of protection against dust, dirt, fiber
flyings, dripping water, and external condensation of non-corrosive
liquids. |
Indoor
use primarily to provide a degree of protection against circulating dust,
lint, fibers, and flyings; dripping and light splashing of noncorrosive
liquids; not provided with knockouts. |
| Type
13 |
Enclosures
are intended for indoor use primarily to provide a degree of protection
against dust, spraying water, oil and non-corrosive liquids. |
Indoor
use to provide a degree of protection against lint, dust seepage,
external condensation and spraying of water, oil, non-corrosive liquids. |
Indoor
use primarily to provide a degree of protection against circulating dust,
lint, fibers, and flyings; seepage and spraying of noncorrosive liquids
including oils and coolants. |
|
Source : Complied by www.rittal.com
Control Engineering
-
March 1999
|
