Induction Motors

Ingress Protection (IP) Classification of Motors

The standard describes a system for classifying the degrees of protection provided by the enclosures of electrical equipment. Developed by the European Committee for Electrotechnical Standardization (CENELEC), these standards are designed to numerically rate an electrical product on the level of protection its enclosure provides. By assigning different number codes, the product's degree of protection can be identified quickly and easily. In the code IP 55, which most of our motors meet, for example, IP identifies this standard, the first digital 5 describes the level of protection from solid objects, and the second digital 5 describes the level of protection from liquids.

Below is the description of Ingress Protection (IP) Classification with 2 digits (IP **).

The first digit

0 No Protection
1 Protected against solid objects up to 50mm e.g. accidental touch by hands
2 Protected against solid objects up to 12mm e.g. fingers
3 Protected against solid objects over 2.5mm e.g. tools
4 Protected against solid objects over 1mm e.g. wires
5 Protected against dust - limited ingress (no harmful deposit)
6 Totally protected against dust

The second digit

0 No Protection
1 Protected against solid objects up to 50mm e.g. accidental touch by hands
2 Protected against solid objects up to 12mm e.g. fingers
3 Protected against direct sprays of water up to 60 deg from the vertical
4 Protected against water sprayed from all directions - limited ingress permitted
5 Protected against low pressure jets of water from all directions - limited ingress permitted
6 Protected against strong jets of water e.g. for use on shipdecks - limited ingress permitted
7 Protected against the affects of immersion between 15cm and 1m
8 Protected against long periods of immersion under pressure