IP39K vs IPX4
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP39K and IPX4 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 0) and liquid protection (level 9K vs 4). IP39K is rated for > 2.5 mm — tool / wire and high-pressure, high-temp water jets, while IPX4 provides no protection and splashing water (all directions).
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.
IPX4 (solid protection not specified) resists splashing water from any direction. A common minimum for bathroom and outdoor-covered appliances 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
IPX4
0 — No Protection
Liquid protection (second digit)
IP39K
9 — High-Pressure, High-Temp Water Jets
IPX4
4 — Splashing Water (all directions)
Dust-tight
IP39K
No
IPX4
No
Water-jet resistant
IP39K
Yes
IPX4
No
Submersible
IP39K
Yes
IPX4
No
Outdoor suitable
IP39K
Yes
IPX4
Yes
The exact difference (IP39K vs IPX4)
Solid protection
IP39K
Level 3 — > 2.5 mm — Tool / Wire
IPX4
Level 0 — No Protection
IP39K provides "> 2.5 mm — Tool / Wire" (level 3), while IPX4 provides "No Protection" (level 0). IP39K is 3 levels higher.
Liquid protection
IP39K
Level 9 — High-Pressure, High-Temp Water Jets
IPX4
Level 4 — Splashing Water (all directions)
IP39K handles 8–10 MPa (High-Pressure, High-Temp Water Jets), while IPX4 handles 50–100 kPa (Splashing Water (all directions)). IP39K provides 5 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP39K offers higher overall protection than IPX4. Choose IP39K for harsher environments; IPX4 may suffice for milder conditions and can be more cost-effective.