166 Ingress Protection ( IP ) & Impact Protection ( IK )
Ingress Protection ( IP ) Rating
The IP system is an internationally recognized method to indicate the degree of protection against the ingress of dust , solid objects and moisture into an enclosure . The letters “ IP ” are followed by two numerals .
First Numeral
Protection of persons against contact with or approach to live parts and against contact with moving parts ( other than smooth rotating shafts and the like ) inside the enclosure and protection of the equipment against ingress of solid foreign bodies in accordance with IEC 60598-1:2003 .
Numeral Degree of Protection 0 Not protected .
1 Protected against solid objects 50 mm in diameter or greater . A large surface of the body , such as a hand ( no protection against deliberate access ).
2 Protected against solid objects 12 mm in diameter or greater . Fingers or similar objects not exceeding 80 mm in length .
3 Protected against solid objects 2.5 mm in diameter or greater . Tools , wires , etc ., of diameter or thickness greater than 2.5 mm .
4 Protected against solid objects 1 mm in diameter or greater . Wires or other similar solid material of thickness greater than 1 mm in diameter .
5 Dust protected . Dust does not enter in sufficient quantity to interfere with satisfactory operation of equipment .
6 Dust tight . No ingress of dust .
Second Numeral Indicates the degree of protection against the ingress of moisture as defined in IEC 60598-1:2003 .
Numeral Degree of Protection 0 Not protected .
1 Protected against dripping water . Dripping water ( vertically falling drops ) shall have no harmful effect .
2 Protected against dripping water when tilted up to 15 º. Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15 º from its normal position .
3 Protected against spraying water . Water falling as a spray at any angle up to 60 º from the vertical shall have no harmful effect .
4 Protected against splashing water . Water splashing against the enclosure from any direction shall have no harmful effect .
5 Protected against water jets . Water projected by a nozzle against enclosure from any direction shall have no harmful effects .
6 Protected against heavy seas . Water from heavy seas or projected in powerful water jets shall not enter the enclosure in harmful quantities .
7 Protected against the effects of temporary immersion . Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time .
8 Protected against continuous immersion . The equipment is suitable for continuous submersion in water under conditions which shall be specified by the manufacturer .
Impact Protection ( IK ) Rating
Degree of protection provided by enclosures for electrical equipment against external impacts in accordance with IEC 62262:2002 .
IK Code |
Degree of Protection |
IK00 |
Not protected . |
IK01 |
Protected against 0.14 joules impact . Equivalent to impact of 0.25 kg mass dropped from 56 mm above impacted surface . |
IK02 |
Protected against 0.2 joules impact . Equivalent to impact of 0.25 kg mass dropped from 80 mm above impacted surface . |
IK03 |
Protected against 0.35 joules impact . Equivalent to impact of 0.25 kg mass dropped from 140 mm above impacted surface . |
IK04 |
Protected against 0.5 joules impact . Equivalent to impact of 0.25 kg mass dropped from 200 mm above impacted surface . |
IK05 |
Protected against 0.7 joules impact . Equivalent to impact of 0.25 kg mass dropped from 280 mm above impacted surface . |
IK06 |
Protected against 1 joules impact . Equivalent to impact of 0.25 kg mass dropped from 400 mm above impacted surface . |
IK07 |
Protected against 2 joules impact . Equivalent to impact of 0.5 kg mass dropped from 400 mm above impacted surface . |
IK08 |
Protected against 5 joules impact . Equivalent to impact of 1.7 kg mass dropped from 300 mm above impacted surface . |
IK09 |
Protected against 10 joules impact . Equivalent to impact of 5 kg mass dropped from 200 mm above impacted surface . |
IK10 |
Protected against 20 joules impact . Equivalent to impact of 5 kg mass dropped from 400 mm above impacted surface . |