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Check the IP rating first when buying an electrical cabinet! The wrong choice means direct rework

Check the IP rating first when buying an electrical cabinet! The wrong choice means direct rework

2026-04-28
The IP rating is the most basic selection parameter for electrical cabinets. Many people only know that "the higher the number, the better", but in fact, the two digits have separate meanings.
latest company news about Check the IP rating first when buying an electrical cabinet! The wrong choice means direct rework 0
First digit = Dust protection level (0–6)

0 = No protection → 1 = Protected against large solid particles → 2 = Protected against finger access → 3 = Protected against small tools → 4 = Protected against fine wires → 5 = Limited dust protection → 6 = Completely dust-tight

Second digit = Water protection level (0–9)

0 = No water resistance → 1 = Protected against vertical dripping water → 2 = Protected against dripping water at 15° tilt → 3 = Protected against spraying water → 4 = Protected against splashing water → 5 = Protected against water jets → 6 = Protected against powerful water jets → 7 = Protected against temporary immersion → 8 = Protected against continuous immersion

Application-based Selection Guide


  • Dry indoor machine room → IP20~IP30
  • General workshop environment → IP40~IP44
  • Humid / dusty workshop → IP54~IP55
  • Outdoor areas / high-pressure washing → IP65~IP66

Keep this in mind: A higher IP rating is not always better. Choosing the minimum sufficient standard to balance protection and heat dissipation is the optimal solution.