IP01 vs IP39K
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP01 and IP39K are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 3) and liquid protection (level 1 vs 9K). IP01 is rated for no protection and vertically dripping water, while IP39K provides > 2.5 mm — tool / wire and high-pressure, high-temp water jets.
IP01 provides no protection against solid objects and protection against vertically falling drops of water. Dripping water shall have no harmful effects.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 0 with second-digit (liquid) level 1.
IP39K is an ingress protection code that ensures protection against solid objects larger than 2.5 mm 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 3 with second-digit (liquid) level 9K.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP01
0 — No Protection
IP39K
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP01
1 — Vertically Dripping Water
IP39K
9 — High-Pressure, High-Temp Water Jets
Dust-tight
IP01
No
IP39K
No
Water-jet resistant
IP01
No
IP39K
Yes
Submersible
IP01
No
IP39K
Yes
Outdoor suitable
IP01
No
IP39K
Yes
The exact difference (IP01 vs IP39K)
Solid protection
IP01
Level 0 — No Protection
IP39K
Level 3 — > 2.5 mm — Tool / Wire
IP01 provides "No Protection" (level 0), while IP39K provides "> 2.5 mm — Tool / Wire" (level 3). IP39K is 3 levels higher.
Liquid protection
IP01
Level 1 — Vertically Dripping Water
IP39K
Level 9 — High-Pressure, High-Temp Water Jets
IP01 handles 0.1 mm/min drip rate (Vertically Dripping Water), while IP39K handles 8–10 MPa (High-Pressure, High-Temp Water Jets). IP39K provides 8 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP39K offers higher overall protection than IP01. Choose IP39K for harsher environments; IP01 may suffice for milder conditions and can be more cost-effective.