IP39K vs IP52
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP39K and IP52 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 5) and liquid protection (level 9K vs 2). IP39K is rated for > 2.5 mm — tool / wire and high-pressure, high-temp water jets, while IP52 provides dust-protected and dripping water at 15° tilt.
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.
IP52 is an ingress protection code that ensures dust-protected (limited ingress, no harmful deposit) and protection against vertically falling drops of water when the enclosure is tilted up to 15° from its normal position.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 5 with second-digit (liquid) level 2.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP39K
3 — > 2.5 mm — Tool / Wire
IP52
5 — Dust-Protected
Liquid protection (second digit)
IP39K
9 — High-Pressure, High-Temp Water Jets
IP52
2 — Dripping Water at 15° Tilt
Dust-tight
IP39K
No
IP52
Limited
Water-jet resistant
IP39K
Yes
IP52
No
Submersible
IP39K
Yes
IP52
No
Outdoor suitable
IP39K
Yes
IP52
No
The exact difference (IP39K vs IP52)
Solid protection
IP39K
Level 3 — > 2.5 mm — Tool / Wire
IP52
Level 5 — Dust-Protected
IP39K provides "> 2.5 mm — Tool / Wire" (level 3), while IP52 provides "Dust-Protected" (level 5). IP52 is 2 levels higher.
Liquid protection
IP39K
Level 9 — High-Pressure, High-Temp Water Jets
IP52
Level 2 — Dripping Water at 15° Tilt
IP39K handles 8–10 MPa (High-Pressure, High-Temp Water Jets), while IP52 handles 0.3 mm/min drip rate (Dripping Water at 15° Tilt). IP39K provides 7 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP39K offers higher overall protection than IP52. Choose IP39K for harsher environments; IP52 may suffice for milder conditions and can be more cost-effective.