IP (Ingress Protection Rate)
IP protection classes define protection levels of electric equipments against contact with solids and fluids, as mentioned in the internaitonal IEC 60529 standard. IP protection class of an equipment is specified with a two digits number as shown below:
| AGAINST SOLIDS | ||
|---|---|---|
| 0 |  | No protection |
| 1 |  | Protection against solids with a diameter larger than 50 mm (back of the hand) |
| 2 |  | Protection against solids with a diameter larger than 12.5 mm (fingers) |
| 3 |  | Protection against solids with a diameter larger than 2.5 mm (hand tools) |
| 4 |  | Protection against solids with a diameter larger than 1 mm (fingers) |
| 5 |  | Protection against dust particles |
| 6 |  | Dust-proof (no dust contamination) |
| AGAINST FLUIDS | ||
|---|---|---|
| 0 |  | No protection |
| 1 |  | Protection against dripping water |
| 2 |  | Protection against dripping water up to vertical angle of 15° |
| 3 |  | Protection against sprayed water up to vertical angle of 60° |
| 4 |  | Protection against splashed water from all directions |
| 5 |  | Protection against pressurized water from all directions |
| 6 |  | Protection against pressurized water similar to sea waves from all directions |
| 7 |  | Protection against being temporarily submersed in water at 15-100 cm depth |
| 8 |  | Protection against being submersed in water at a certain depth for a long time |
| Protection Classes | ||
|---|---|---|
| All electrical equipments are included in one of the following four insulation classes based on their design: | ||
| Class 0 | : | No protection. |
| Class I | : | All metal parts are grounded. |
| Class II | : | Double protection against human contact with electrical components. No grounding is required. |
| Class III | : | The product is fed by SELV (Separated or Safety Extra-Low Voltage) power supply. There is no risk of electric shock in case of human contact with electrical components. |
