IP39K vs IP5X
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP39K and IP5X are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 5) and liquid protection (level 9K vs 0). IP39K is rated for > 2.5 mm — tool / wire and high-pressure, high-temp water jets, while IP5X provides dust-protected and no protection.
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.
IP5X is dust-protected (limited ingress, no harmful deposit) with water protection not specified. Used where dust limitation matters but the equipment is kept dry.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP39K
3 — > 2.5 mm — Tool / Wire
IP5X
5 — Dust-Protected
Liquid protection (second digit)
IP39K
9 — High-Pressure, High-Temp Water Jets
IP5X
0 — No Protection
Dust-tight
IP39K
No
IP5X
Limited
Water-jet resistant
IP39K
Yes
IP5X
No
Submersible
IP39K
Yes
IP5X
No
Outdoor suitable
IP39K
Yes
IP5X
No
The exact difference (IP39K vs IP5X)
Solid protection
IP39K
Level 3 — > 2.5 mm — Tool / Wire
IP5X
Level 5 — Dust-Protected
IP39K provides "> 2.5 mm — Tool / Wire" (level 3), while IP5X provides "Dust-Protected" (level 5). IP5X is 2 levels higher.
Liquid protection
IP39K
Level 9 — High-Pressure, High-Temp Water Jets
IP5X
Level 0 — No Protection
IP39K provides "High-Pressure, High-Temp Water Jets" (level 9), while IP5X provides "No Protection" (level 0). IP39K is 9 levels higher.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP39K offers higher overall protection than IP5X. Choose IP39K for harsher environments; IP5X may suffice for milder conditions and can be more cost-effective.