Explosion-proof certification (Ex) only prevents internal explosions. In real-world applications, additional protection ratings are essential to handle harsh environments.

1. Main Protection Ratings

2. Detailed Explanation

• IP66 / IP67 (Dust & Water Protection): IP66: Protected against powerful water jets + complete dust protection (basic requirement). IP67: Protected against temporary immersion in water (1m for 30min) — recommended for outdoor, wet, or wash-down areas. Insufficient IP rating can cause internal failures and compromise explosion-proof performance.

• IK10 (Impact Resistance): IK10 = Can withstand 20 Joules of impact (equivalent to 5kg object dropped from 40cm). Portable and temporary lights: Must meet IK10. Fixed lights: At least IK09.

• Corrosion Resistance: C5 (highest): For severe offshore platforms and chemical plants with high salt spray. C4: Suitable for normal coastal or chemical environments. Common solutions: High-durability powder coating, 316 stainless steel, or anodized low-copper aluminum alloy.

3. Recommended Configurations by Application

4. Procurement Tips

• Always check the full certification report to verify IP/IK testing.

• Example marking: Ex db IIC T4 Gb IP67 IK10

• Portable lights usually require one level higher protection than fixed lights.

• Housing must use low-copper aluminum alloy + anti-corrosion coating.

Summary Recommendation: Minimum: IP66 + IK09 + C4. Best Balance: IP67 + IK10 + C5.