Conec Catalog section: Water Resistant Connectors

IP Rating Explanation

First
Characteristic
Numeral Solid foreign bodies
Degree of protection

0 No protection of persons against contact with live or moving parts inside the enclosure. No protection of equipment against ingress of solid foreign bodies.

1 Protection against accidental or inadvertent contact with live or moving parts inside the enclosure by a large surface of the human body, e/g/ a hand, but not protection against deliberate access to such parts. Protection against ingress
2 Protection against contact with live or moving parts inside the enclosure by fingers. Protection against ingress of medium size solid foreign bodies.
3 Protection against contact with live or moving parts inside the enclosure by tools, wires or such objects of thickness greater than 2,55 mm. Protection against ingress of small size solid foreign bodies.
4 Protection against contact with live or moving parts inside the enclosure by tools, wires or such objects of thickness greater than 1,00 mm. Protection against ingress of small size solid foreign bodies.
5 Complete protection against contact with live or moving parts inside the enclosure. Protection against harmful deposits of dust. The ingress of dust is not totally prevented but dust cannot enter in an amount sufficient to interfere with satisfactory operation of the enclosed equipment.
6 Complete protection against contact with live or moving parts inside the enclosure. Protection against ingress of dust.

First Characteristic Numeral	Solid foreign bodies Degree of protection
0	No protection of persons against contact with live or moving parts inside the enclosure. No protection of equipment against ingress of solid foreign bodies.
1	Protection against accidental or inadvertent contact with live or moving parts inside the enclosure by a large surface of the human body, e/g/ a hand, but not protection against deliberate access to such parts. Protection against ingress
2	Protection against contact with live or moving parts inside the enclosure by fingers. Protection against ingress of medium size solid foreign bodies.
3	Protection against contact with live or moving parts inside the enclosure by tools, wires or such objects of thickness greater than 2,55 mm. Protection against ingress of small size solid foreign bodies.
4	Protection against contact with live or moving parts inside the enclosure by tools, wires or such objects of thickness greater than 1,00 mm. Protection against ingress of small size solid foreign bodies.
5	Complete protection against contact with live or moving parts inside the enclosure. Protection against harmful deposits of dust. The ingress of dust is not totally prevented but dust cannot enter in an amount sufficient to interfere with satisfactory operation of the enclosed equipment.
6	Complete protection against contact with live or moving parts inside the enclosure. Protection against ingress of dust.

Second
Characteristic
Numeral Liquids
Degree of protection

0 No protection.

1 Protection against drops of condensed water. Drops of condensed water falling on the enclosure shall have no harmful effect.
2 Protection against drops of liquid. Drops of falling liquid shall have no harmful effect when the enclosure is tilted at any angle up to 15°rees; from the vertical.
3 Protection against rain. Water falling in rain at any angle equal to or smaller than 60 °rees; with respect to the vertical shall have no harmful effect.
4 Protection against splashing. Liquid splashed from any direction shall have no harmful effect.
5 Protection against water jets. Water projected by nozzle from any direction under stated conditions shall have no harmful effect.
6 Protection against conditions on ship decks (deck watertight equipment). Water from heavy seas shall not enter the enclosures under prescribed conditions.

7 Protection against immersion in water. It shall not be possible for water to enter the enclosure under stated conditions of pressure and time.

8 Protection against indefinite immersion in water under specified pressure. It shall not be possible for water to enter the enclosure.

Second Characteristic Numeral	Liquids Degree of protection
0	No protection.
1	Protection against drops of condensed water. Drops of condensed water falling on the enclosure shall have no harmful effect.
2	Protection against drops of liquid. Drops of falling liquid shall have no harmful effect when the enclosure is tilted at any angle up to 15°rees; from the vertical.
3	Protection against rain. Water falling in rain at any angle equal to or smaller than 60 °rees; with respect to the vertical shall have no harmful effect.
4	Protection against splashing. Liquid splashed from any direction shall have no harmful effect.
5	Protection against water jets. Water projected by nozzle from any direction under stated conditions shall have no harmful effect.
6	Protection against conditions on ship decks (deck watertight equipment). Water from heavy seas shall not enter the enclosures under prescribed conditions.
7	Protection against immersion in water. It shall not be possible for water to enter the enclosure under stated conditions of pressure and time.
8	Protection against indefinite immersion in water under specified pressure. It shall not be possible for water to enter the enclosure.

Explanation of ingress Protection (IP) System for Enclosures

This system outlined in IEC 529 is designed to indicate the standard degrees of protection from:
a) touch and ingress of solids, and
b) from ingress of liquids, which enclosures may exhibit.
The first numeral designates the degree of protection against touching live parts and ingress of solid foreign bodies. The second designates the degree of protection against ingress of liquid. The higher the numeral of the first and second characteristic, the greater degree of protection the enclosure offers, e.g. IP55 meets all the less onerous degrees such as IP22, IP23, IP24 and IP54.