IP12 vs IP37
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP12 and IP37 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 1 vs 3) and liquid protection (level 2 vs 7). IP12 is rated for > 50 mm — back of hand and dripping water at 15° tilt, while IP37 provides > 2.5 mm — tool / wire and temporary immersion (up to 1 m).
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.
Specified under IEC 60529, IP37 denotes protection against solid objects larger than 2.5 mm and protection against the effects of temporary immersion in water. Ingress of water in quantities causing harmful effects shall not be possible.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 3 with second-digit (liquid) level 7.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP12
1 — > 50 mm — Back of Hand
IP37
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP12
2 — Dripping Water at 15° Tilt
IP37
7 — Temporary Immersion (up to 1 m)
Dust-tight
IP12
No
IP37
No
Water-jet resistant
IP12
No
IP37
Yes
Submersible
IP12
No
IP37
Yes
Outdoor suitable
IP12
No
IP37
Yes
The exact difference (IP12 vs IP37)
Solid protection
IP12
Level 1 — > 50 mm — Back of Hand
IP37
Level 3 — > 2.5 mm — Tool / Wire
IP12 provides "> 50 mm — Back of Hand" (level 1), while IP37 provides "> 2.5 mm — Tool / Wire" (level 3). IP37 is 2 levels higher.
Liquid protection
IP12
Level 2 — Dripping Water at 15° Tilt
IP37
Level 7 — Temporary Immersion (up to 1 m)
IP12 handles 0.3 mm/min drip rate (Dripping Water at 15° Tilt), while IP37 handles Hydrostatic ~10 kPa at 1 m (Temporary Immersion (up to 1 m)). IP37 provides 5 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP37 offers higher overall protection than IP12. Choose IP37 for harsher environments; IP12 may suffice for milder conditions and can be more cost-effective.