IP12 vs IP39K
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP12 and IP39K are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 1 vs 3) and liquid protection (level 2 vs 9K). IP12 is rated for > 50 mm — back of hand and dripping water at 15° tilt, while IP39K provides > 2.5 mm — tool / wire and high-pressure, high-temp water jets.
Designed for environments requiring protection against solid objects larger than 50 mm and protection against vertically falling drops of water when the enclosure is tilted up to 15° from its normal position., IP12 is an IEC 60529 code combining solid level 1 with liquid level 2.
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)
IP12
1 — > 50 mm — Back of Hand
IP39K
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP12
2 — Dripping Water at 15° Tilt
IP39K
9 — High-Pressure, High-Temp Water Jets
Dust-tight
IP12
No
IP39K
No
Water-jet resistant
IP12
No
IP39K
Yes
Submersible
IP12
No
IP39K
Yes
Outdoor suitable
IP12
No
IP39K
Yes
The exact difference (IP12 vs IP39K)
Solid protection
IP12
Level 1 — > 50 mm — Back of Hand
IP39K
Level 3 — > 2.5 mm — Tool / Wire
IP12 provides "> 50 mm — Back of Hand" (level 1), while IP39K provides "> 2.5 mm — Tool / Wire" (level 3). IP39K is 2 levels higher.
Liquid protection
IP12
Level 2 — Dripping Water at 15° Tilt
IP39K
Level 9 — High-Pressure, High-Temp Water Jets
IP12 handles 0.3 mm/min drip rate (Dripping Water at 15° Tilt), while IP39K handles 8–10 MPa (High-Pressure, High-Temp Water Jets). IP39K provides 7 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP39K offers higher overall protection than IP12. Choose IP39K for harsher environments; IP12 may suffice for milder conditions and can be more cost-effective.