Dustproof and Waterproof Ratings IP 54 / IP65 / IP 67
Protection Rating Code Structure
IP = Ingress Protection
① First digit: Protection against solid foreign objects (dustproof)
② Second digit: Protection against liquid ingress (waterproof)
Code | First Digit (Dustproof) | Second Digit (Waterproof) |
IP54 | 5 (Limited dust protection) | 4 (Splash-proof) |
IP65 | 6 (Totally dust-tight) | 5 (Protection against low-pressure water jets) |
IP67 | 6 (Totally dust-tight) | 7 (Protection against temporary immersion) |
Comparison of Dustproof Performance (First Digit)
Rating | Test Requirements (iec 60529) | Actual Protection Effect |
5 | Dust test: Continuous for 2 hours, a small amount of dust ingress is permitted but shall not affect operation | Suitable for non-extreme dust environments (e.g., offices, households) |
6 | Dust chamber test: 8 hours under vacuum negative pressure, complete prevention of dust ingress | Capable of withstanding harsh environments such as sandstorms, industrial dust, and mining sites |
Key Differences:
① IP54 equipment may accumulate internal dust (regular cleaning is required), while IP65/IP67 equipment is completely sealed and dust-free.
Comparison of Waterproof Performance (Second Digit)
Rating | Test Requirements (IEC 60529) | Actual Protection Effect |
4 | Splash protection: Water sprayed from nozzles at all angles for 10 minutes | Only protects against rainwater and hand-washing splashes (not suitable for water washing) |
5 | Low-pressure water jet protection: Water sprayed from a 6.3mm nozzle at 12.5L/min for 3 minutes | Can withstand outdoor heavy rain and vehicle washing |
7 | Temporary immersion protection: Immersion at a depth of 1 meter underwater for 30 minutes | Protects against accidental water entry (e.g., swimming pools, puddles) and resists water pressure penetration |
Risk Warnings:
① IP65 is waterproof but not immersion-proof (water ingress will occur if the device falls into a pool).
② IP67 does not protect against high-pressure water jets (choose IP69K if high-pressure washing is required).
③ None of the ratings provide protection against water vapor (high-temperature steam may penetrate).
Recommended Application Scenarios
Rating | Typical Application Scenarios | Design Cases |
IP54 | - Indoor electronic devices (TVs, routers) - Office equipment (printers, charging cabinets) - Environments with no water contact | Shared charging cabinets (indoor installation) |
IP65 | - Outdoor equipment (street lamps, advertising screens) - Industrial equipment (workshop control panels) - Places requiring washing (kitchen appliances) | Outdoor charging piles, food processing equipment |
IP67 | - Portable devices (mobile phones, sports bracelets) - Underwater equipment (diving cameras, sensors) - Extreme environments (vehicle chassis, field equipment) | Shared power banks (rainproof + accidental water immersion) |
Core Differences in Testing Methods
Test Item | IP54 | IP65 | IP67 |
Dust Test | 1m³ dust chamber, 2 hours | 1m³ dust chamber, 8 hours under negative pressure | Same as IP65 |
Water Test | Oscillating tube water spray (10L/min) | Nozzle water spray (12.5L/min) | Immersion at 1m water depth for 30 minutes |
Pressure Condition | Normal pressure | Normal pressure | 9.8kPa |
More:ingress protection testing
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