IP65 vs IP39K
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP65 and IP39K are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 6 vs 3) and liquid protection (level 5 vs 9K). IP65 is rated for dust-tight and water jets (6.3 mm nozzle), while IP39K provides > 2.5 mm — tool / wire and high-pressure, high-temp water jets.
IP65 is dust-tight and resists low-pressure water jets (6.3 mm nozzle, 30 kPa). It is the most common standard for fully exposed outdoor electronics such as lighting, cameras, and EV chargers.
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)
IP65
6 — Dust-Tight
IP39K
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP65
5 — Water Jets (6.3 mm nozzle)
IP39K
9 — High-Pressure, High-Temp Water Jets
Dust-tight
IP65
Yes
IP39K
No
Water-jet resistant
IP65
Yes
IP39K
Yes
Submersible
IP65
No
IP39K
Yes
Outdoor suitable
IP65
Yes
IP39K
Yes
The exact difference (IP65 vs IP39K)
Solid protection
IP65
Level 6 — Dust-Tight
IP39K
Level 3 — > 2.5 mm — Tool / Wire
IP65 provides "Dust-Tight" (level 6), while IP39K provides "> 2.5 mm — Tool / Wire" (level 3). IP65 is 3 levels higher.
Liquid protection
IP65
Level 5 — Water Jets (6.3 mm nozzle)
IP39K
Level 9 — High-Pressure, High-Temp Water Jets
IP65 handles 30 kPa (Water Jets (6.3 mm nozzle)), while IP39K handles 8–10 MPa (High-Pressure, High-Temp Water Jets). IP39K provides 4 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP39K offers higher overall protection than IP65. Choose IP39K for harsher environments; IP65 may suffice for milder conditions and can be more cost-effective.