Degree of Protection

Degree of protection data applicable to Luminaires

Table I : Degree of protection indicated by the first numeral First Characteristic numeral Degree of Protection Short Description Definition Symbol 0 Non-protected No special protection   1 Protected against solid objects greater than 50 mm  A large surface of the body, such as a hand (but no protection against deliberate access), Solid objects exceeding 50 mm in diameter.   2 Protected against solid objects greater than 12 mm Fingers or similar objects not exceeding 80 mm in length. Solid objects exceeding 12mm in diameter.   3 Protected against solid objects greater than 2.5 mm Tools, wires, etc. of diameter or thickness greater than 2.5 mm. Solid objects exceeding 2.5 mm in diameter.   4 Protected against solid objects greater than 1.0 mm  Wires or strips of thickness greater than 1. 0 mm. Solid object exceeding 1.0 mm in diameter   5 Dust-protected Ingress of dust is not totally prevented, But dust does not enter in sufficient quantity to interfere with satisfactory operation of the equipment. 6 Dust-tight No ingress of dust.   Table II : Degree of protection indicated by the second numeral Second Characteristic numeral Degree of protection Short Description Definition Symbol 0 Non-protected No special protection   1 Protected against dripping water Dripping water (vertically failing drops) shall have no harmful effect. 2 Protected against dripping water when tilted upto 150 Vertically dripping water shall have no harmful effect when the enclosure is tilted at any angle upto 150from its normal position. 3 Protected against spraying water Water falling as a spray at an angle upto 600 from the vertical shall have no harmful effect. 4 Protected against splashing water Water splashed against the enclosure from any direction shall have no harmful effect. 5 Protected against water jets Water projected by a nozzle against the enclosure from any direction shall have no harmful effect. 6 Protected against heavy seas Water from heavy seas or water projected in powerful jets shall not enter the enclosure in harmful quantities. 7 Protected against the effects of immersion Ingress of water in a harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time. 8 Protected against submersion The equipment is suitable for continuous submersion in water under conditions which shall be specified by the manufacturer. Note: Normally, this will mean that the equipment is hermaticaliy sealed. However with certain types of equipment it can mean that water can enter but only in such a manner that it produces no harmful effects.