IP09K vs IP11
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP09K and IP11 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 1) and liquid protection (level 9K vs 1). IP09K is rated for no protection and high-pressure, high-temp water jets, while IP11 provides > 50 mm — back of hand and vertically dripping water.
The IP09K rating offers no protection against solid objects and resistance to high-pressure (8–10 MPa), high-temperature (80 °C) water jets. It is an IEC 60529 ingress protection code combining first-digit (solid) level 0 with second-digit (liquid) level 9K.
Engineered to deliver protection against solid objects larger than 50 mm and protection against vertically falling drops of water. Dripping water shall have no harmful effects.. Classified as IEC 60529 ingress protection code IP11, it pairs solid level 1 with liquid level 1.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP09K
0 — No Protection
IP11
1 — > 50 mm — Back of Hand
Liquid protection (second digit)
IP09K
9 — High-Pressure, High-Temp Water Jets
IP11
1 — Vertically Dripping Water
Dust-tight
IP09K
No
IP11
No
Water-jet resistant
IP09K
Yes
IP11
No
Submersible
IP09K
Yes
IP11
No
Outdoor suitable
IP09K
Yes
IP11
No
The exact difference (IP09K vs IP11)
Solid protection
IP09K
Level 0 — No Protection
IP11
Level 1 — > 50 mm — Back of Hand
IP09K provides "No Protection" (level 0), while IP11 provides "> 50 mm — Back of Hand" (level 1). IP11 is 1 level higher.
Liquid protection
IP09K
Level 9 — High-Pressure, High-Temp Water Jets
IP11
Level 1 — Vertically Dripping Water
IP09K handles 8–10 MPa (High-Pressure, High-Temp Water Jets), while IP11 handles 0.1 mm/min drip rate (Vertically Dripping Water). IP09K provides 8 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP09K offers higher overall protection than IP11. Choose IP09K for harsher environments; IP11 may suffice for milder conditions and can be more cost-effective.