IP27 vs IP37
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP27 and IP37 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 2 vs 3). IP27 is rated for > 12.5 mm — finger and temporary immersion (up to 1 m), while IP37 provides > 2.5 mm — tool / wire and temporary immersion (up to 1 m).
The IP27 classification guarantees protection against solid objects larger than 12.5 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 2 with second-digit (liquid) level 7.
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)
IP27
2 — > 12.5 mm — Finger
IP37
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP27
7 — Temporary Immersion (up to 1 m)
IP37
7 — Temporary Immersion (up to 1 m)
Dust-tight
IP27
No
IP37
No
Water-jet resistant
IP27
Yes
IP37
Yes
Submersible
IP27
Yes
IP37
Yes
Outdoor suitable
IP27
Yes
IP37
Yes
The exact difference (IP27 vs IP37)
Solid protection
IP27
Level 2 — > 12.5 mm — Finger
IP37
Level 3 — > 2.5 mm — Tool / Wire
IP27 provides "> 12.5 mm — Finger" (level 2), while IP37 provides "> 2.5 mm — Tool / Wire" (level 3). IP37 is 1 level higher.
Liquid protection
IP27
Level 7 — Temporary Immersion (up to 1 m)
IP37
Level 7 — Temporary Immersion (up to 1 m)
Both IP27 and IP37 share the same liquid protection: Temporary Immersion (up to 1 m).
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP37 offers higher overall protection than IP27. Choose IP37 for harsher environments; IP27 may suffice for milder conditions and can be more cost-effective.