IP37 vs IP53
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP37 and IP53 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 5) and liquid protection (level 7 vs 3). IP37 is rated for > 2.5 mm — tool / wire and temporary immersion (up to 1 m), while IP53 provides dust-protected and spraying water (up to 60°).
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.
Built to withstand dust-protected (limited ingress, no harmful deposit) and protection against spraying water. Water sprayed at an angle up to 60° on either side of the vertical shall have no harmful effects.. Classified as IEC 60529 ingress protection code IP53, it pairs solid level 5 with liquid level 3.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP37
3 — > 2.5 mm — Tool / Wire
IP53
5 — Dust-Protected
Liquid protection (second digit)
IP37
7 — Temporary Immersion (up to 1 m)
IP53
3 — Spraying Water (up to 60°)
Dust-tight
IP37
No
IP53
Limited
Water-jet resistant
IP37
Yes
IP53
No
Submersible
IP37
Yes
IP53
No
Outdoor suitable
IP37
Yes
IP53
No
The exact difference (IP37 vs IP53)
Solid protection
IP37
Level 3 — > 2.5 mm — Tool / Wire
IP53
Level 5 — Dust-Protected
IP37 provides "> 2.5 mm — Tool / Wire" (level 3), while IP53 provides "Dust-Protected" (level 5). IP53 is 2 levels higher.
Liquid protection
IP37
Level 7 — Temporary Immersion (up to 1 m)
IP53
Level 3 — Spraying Water (up to 60°)
IP37 handles Hydrostatic ~10 kPa at 1 m (Temporary Immersion (up to 1 m)), while IP53 handles 80 kPa (tube) / 50 kPa (nozzle) (Spraying Water (up to 60°)). IP37 provides 4 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP37 offers higher overall protection than IP53. Choose IP37 for harsher environments; IP53 may suffice for milder conditions and can be more cost-effective.