IP55 vs IP69K
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP55 and IP69K are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 5 vs 6) and liquid protection (level 5 vs 9K). IP55 is rated for dust-protected and water jets (6.3 mm nozzle), while IP69K provides dust-tight and high-pressure, high-temp water jets.
IP55 is dust-protected and resists low-pressure water jets (6.3 mm nozzle, 30 kPa). A popular industrial rating for equipment exposed to dust and directed water spray but not immersion.
IP69K is dust-tight and resists high-pressure (8–10 MPa), high-temperature (80 °C) water jets. The highest IP rating, required for food, beverage, and pharmaceutical washdown environments.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP55
5 — Dust-Protected
IP69K
6 — Dust-Tight
Liquid protection (second digit)
IP55
5 — Water Jets (6.3 mm nozzle)
IP69K
9 — High-Pressure, High-Temp Water Jets
Dust-tight
IP55
Limited
IP69K
Yes
Water-jet resistant
IP55
Yes
IP69K
Yes
Submersible
IP55
No
IP69K
Yes
Outdoor suitable
IP55
Yes
IP69K
Yes
The exact difference (IP55 vs IP69K)
Solid protection
IP55
Level 5 — Dust-Protected
IP69K
Level 6 — Dust-Tight
IP55 provides "Dust-Protected" (level 5), while IP69K provides "Dust-Tight" (level 6). IP69K is 1 level higher.
Liquid protection
IP55
Level 5 — Water Jets (6.3 mm nozzle)
IP69K
Level 9 — High-Pressure, High-Temp Water Jets
IP55 handles 30 kPa (Water Jets (6.3 mm nozzle)), while IP69K handles 8–10 MPa (High-Pressure, High-Temp Water Jets). IP69K provides 4 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP69K offers higher overall protection than IP55. Choose IP69K for harsher environments; IP55 may suffice for milder conditions and can be more cost-effective.