IP39K vs IPX6
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP39K and IPX6 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 0) and liquid protection (level 9K vs 6). IP39K is rated for > 2.5 mm — tool / wire and high-pressure, high-temp water jets, while IPX6 provides no protection and powerful water jets (12.5 mm nozzle).
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.
IPX6 resists powerful water jets (12.5 mm nozzle, 100 kPa) with solid protection not specified. Suitable for heavy-rain or hose-exposed equipment where dust sealing is not required.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP39K
3 — > 2.5 mm — Tool / Wire
IPX6
0 — No Protection
Liquid protection (second digit)
IP39K
9 — High-Pressure, High-Temp Water Jets
IPX6
6 — Powerful Water Jets (12.5 mm nozzle)
Dust-tight
IP39K
No
IPX6
No
Water-jet resistant
IP39K
Yes
IPX6
Yes
Submersible
IP39K
Yes
IPX6
No
Outdoor suitable
IP39K
Yes
IPX6
Yes
The exact difference (IP39K vs IPX6)
Solid protection
IP39K
Level 3 — > 2.5 mm — Tool / Wire
IPX6
Level 0 — No Protection
IP39K provides "> 2.5 mm — Tool / Wire" (level 3), while IPX6 provides "No Protection" (level 0). IP39K is 3 levels higher.
Liquid protection
IP39K
Level 9 — High-Pressure, High-Temp Water Jets
IPX6
Level 6 — Powerful Water Jets (12.5 mm nozzle)
IP39K handles 8–10 MPa (High-Pressure, High-Temp Water Jets), while IPX6 handles 100 kPa (Powerful Water Jets (12.5 mm nozzle)). IP39K provides 3 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP39K offers higher overall protection than IPX6. Choose IP39K for harsher environments; IPX6 may suffice for milder conditions and can be more cost-effective.