IP Code (international Standard IEC 60529)

First Number Degree of Protection Second Number Degree of Protection
0 No Protection 0 No Protection
1 Protected against solid foreign objects of 50 mm diameter and greater. 1 Dripping water ( vertically falling drops) shall have no harmful effect.
2 Protected against solid foreign objects of 12.5 mm diameter and greater. 2 Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15° from its normal position.
3 Protected against solid foreign objects of 2.5 mm diameter and greater. 3 Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect.
4 Protected against solid foreign objects of 1.0 mm diameter and greater. 4 Water splashing against the enclosure from any direction shall have no harmful effect.
5 Ingress of dust is not entrely prevented, but it must not enter in sufficient quantity to interfere whth the satisfactory operation of the equipment. 5 Water projected by a nozzle against enclosure from any direction shall have no harmful effects.
6 Dust tight; No ingress of dust. 6 Water projected in powerful jets against the enclosure from any direction shall have no harmful effects.

 
http://www.nema.org

NEMA Non-Hazardous Locatoin Enclosure Standards.

NEMA4 NEMA TYPE 4
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); and that will be undamaged by the external formation of ice on the enclosure.

NEMA4X NEMA TYPE 4X
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); that provides an additional level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure.

NEMA 12 NEMA TYPE 12
Enclosures constructed (whthout knockouts) for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects ( falling dirt and circulating dust, lint, fibers, and flyings); and to prooide degree of protection whth respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).

For further information please contact us at 886-6-5782799 or visit our website www.nonstone.com