The IP or Ingress Protection Rating / Testing System
IP stands for Ingress Protection. The rating's first digit e.g. IP66 relates to the ingress protection against dust (6 means dust tight) and the second digit e.g IP66 relates to the ingress protection against water (6 means protected against heavy water jets.) See the table below for more info on this rating system:
| Protection Against Solid Objects |
| 1st Digit |
Description |
Definition |
| 0 |
Non-protected |
No special protection |
| 1 |
Protected against solid objects greater than 50 mm |
A large surface of the body such as the hand (no protection against deliberate access). Solid objects exceeding 50mm diameter |
| 2 |
Protected against solid objects greater than 12 mm |
Fingers or other objects not exceeding 80 mm in length. Solid objects exceeding 12 mm 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 diameter |
| 4 |
Protected against solid objects greater than 1.0 mm |
Wires or strips of thickness greater than 1.0 mm. Solid objects exceeding 1.0 mm |
| 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 (Dotworkz products are tested from here) |
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| Protection Against Liquids |
| 2nd Digit |
Description |
Definition |
| 0 |
Non-protected |
No special protection |
| 1 |
Protected against dripping water |
Dripping water (vertically falling drops) |
| 2 |
Protected against dripping water when tilted up to 15° |
Vertically dripping water shall have no harmful effect when the enclosure is tilted at any angle up to 15° from its normal position |
| 3 |
Protected against spraying water |
Water falling as spray at an angle up to 60° 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 from 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 (Dotworkz D-Series Products D2 and D3 housing systems) |
| 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 (Dotworkz S-Type) |
| 8 |
Protected against submersion |
The equipment is suitable for continuous submersion in water under conditions, which shall be specified by the manufacturer |
Dotworkz product certification:
Please Note All Dotworkz Housing Systems and Accessories are 100% proudly made in the USA.
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