IP11 vs IP59K
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP11 and IP59K are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 1 vs 5) and liquid protection (level 1 vs 9K). IP11 is rated for > 50 mm — back of hand and vertically dripping water, while IP59K provides dust-protected and high-pressure, high-temp water jets.
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.
The IP59K classification guarantees dust-protected (limited ingress, no harmful deposit) 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 5 with second-digit (liquid) level 9K.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP11
1 — > 50 mm — Back of Hand
IP59K
5 — Dust-Protected
Liquid protection (second digit)
IP11
1 — Vertically Dripping Water
IP59K
9 — High-Pressure, High-Temp Water Jets
Dust-tight
IP11
No
IP59K
Limited
Water-jet resistant
IP11
No
IP59K
Yes
Submersible
IP11
No
IP59K
Yes
Outdoor suitable
IP11
No
IP59K
Yes
The exact difference (IP11 vs IP59K)
Solid protection
IP11
Level 1 — > 50 mm — Back of Hand
IP59K
Level 5 — Dust-Protected
IP11 provides "> 50 mm — Back of Hand" (level 1), while IP59K provides "Dust-Protected" (level 5). IP59K is 4 levels higher.
Liquid protection
IP11
Level 1 — Vertically Dripping Water
IP59K
Level 9 — High-Pressure, High-Temp Water Jets
IP11 handles 0.1 mm/min drip rate (Vertically Dripping Water), while IP59K handles 8–10 MPa (High-Pressure, High-Temp Water Jets). IP59K provides 8 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP59K offers higher overall protection than IP11. Choose IP59K for harsher environments; IP11 may suffice for milder conditions and can be more cost-effective.