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IP Ratings (Ingress Protection)

Rating for Equipment and Enclosures

A three-digit number established by the International Electrotechnical Commission, is used to provide an IP Rating to a piece of electronic equipment or to an enclosure for electronic equipment. The IP code indicates the level, or amount of the protection.

The three digits represent three different forms of environmental influence:

The first digit represents protection against ingress of solid objects.
The second digit represents protection against ingress of liquids.
The third digit represents protection against mechanical impact damage.

(*The third digit is often omitted, resulting in a 2-digit IP Rating covering ingress against solid objects and liquids only).

The larger the value of each digit, the greater the protection from that influence. As an example, a product rated as IP573 would be better protected against environmental factors than another similar product that was only rated as IP432.

IP TABLE:

Level 等級	First Number (Solids) (第1碼)固體入侵	Second Number (Liquids) (第2碼)液體入侵	Third Number (Mechanical Impact) (第3碼)耐衝擊
0	No protection 沒有保護	No protection 沒有保護	No protection 沒有保護
1	Protected against solid objects over 50mm e.g. hands, large tools. 可防止直徑大於 50mm 的固體入侵, 包括手指及工具	Protected against vertically falling drops of water or condensation. 可防止垂直落下的水滴進入機體	Protected against 0.225 joule impact (150g @ 15cm). 可忍受 0.255 焦耳 (150克 / 每秒15cm) 的撞擊
2	Protected against solid objects over 12mm e.g. hands, large tools. 可防止直徑大於 12mm 的固體入侵, 包括手指及工具	Protected against direct sprays of water up to 15° from vertical. 可防止15度以內斜角落下的水滴進入機體	Protected against 0.375 joule impact (250g @ 15cm). 可忍受 0.375 焦耳 (250克 / 每秒15cm) 的撞擊
3	Protected against solid objects over 2.5mm e.g. wire, small tools. 可防止直徑大於 2.5mm 的固體入侵, 包括電線及小工具	Protected against direct sprays of water up to 60° from vertical. 可防止60度以內斜角落下的水滴進入機體	Protected against 0.5 joule impact (250g @ 20cm). 可忍受 0.5 焦耳 (250克 / 每秒20cm) 的撞擊
4	Protected against solid objects over 1.0mm e.g. wires. 可防止直徑大於 1.0mm 的固體入侵, 包括細電線	Protected against water sprayed from any direction. Limited ingress permitted. 可防止任何方向噴濺的水滴進入機體
5	Limited protection against dust ingress (no harmful deposit) 在不傷害機體的狀況下, 能有效防止異物入侵	Protected against low pressure water jets from any direction. Limited ingress permitted. 有限度的防止任何方向低壓水柱的沖洗	Protected against 2.0 joule impact (500g @ 40cm). 可忍受 2 焦耳 (500克 / 每秒40cm) 的撞擊
6	Totally protected against dust ingress. 異物完全無法入侵	Protected against high pressure water jets from any direction. Limited ingress permitted. (Ship deck) 有限度的防止任何方向強力水柱的沖洗
7	N/A	Protected against the effects of immersion between 15cm and 1M. 可以沉入15cm至1M的水中約30分鐘	Protected against 6.0 joule impact (1.5Kg @ 40cm). 可忍受 6 焦耳 (1公斤 / 每秒40cm) 的撞擊
8	N/A	Protected against long periods of immersion under pressure. 可以長時期浸泡在水中
9	N/A	N/A	Protected against 20 joule impact (5Kg @ 40cm). 可忍受 20 焦耳 (5公斤 / 每秒40cm) 的撞擊