Ip Rating

UNDERSTANDING THE INGRESS PROTECTION SYSTEM

The IEC IP classification system designates the degree of protection provided by an enclosure against impact and/or water or dust penetration (ingress). It has two numbers; first—protection against solid objects, second protection against water.

EXAMPLE: IP 54

1st Figure: protection against solid bodies IP TESTS

No protection

1

Protected against vertically-falling drops of water (condensation)

2

Protected against drops of water falling at up to 15˚ from the vertical

3

Protected against solid bodies larger than 2.5mm (tools, wires)

Protected against drops of rainwater at up to 60˚ from the vertical

4

4

Protection against solid bodies larger than 1mm (fine tools, small wires)

Protected against projections of water from all directions

5

Protected against jets of water from all directions

5

Protected against dust (no harmful deposit)

6

Completely protected against jets of water of similar force to heavy seas

6

Completely protected against dust

7

Protected against the effects of immersion

1

2

3

Protected against solid bodies larger than 50mm (e.g. accidental contact with the hand) Protected against solid bodies larger than 12.5mm (e.g. finger of the hand)

15 cm mini

0

No protection

1m

0

2nd Figure: protection against liquids IP TESTS

IP RATINGS DO NOT INDICATE ANY DEGREE OF CORROSION RESISTANCE. Conversion of NEMA Enclosure Type numbers to IEC Classification Designations (Cannot be used to convert IEC Classification Designations to NEMA Type numbers)

NEMA ENCLOSURE TYPE NUMBER 1 2 3 3R 3S 4 AND 4X 5 6 AND 6P 12 AND 12K 13

IEC ENCLOSURE CLASSIFICATION DESIGNATION IP10 IP11 IP54 IP54 IP54 IP56 IP52 IP67 IP52 IP54

9