IP33 vs IP58
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP33 and IP58 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 5) and liquid protection (level 3 vs 8). IP33 is rated for > 2.5 mm — tool / wire and spraying water (up to 60°), while IP58 provides dust-protected and continuous immersion (manufacturer-specified).
IP33 protects against tools and 2.5 mm objects plus spraying water up to 60° from vertical. A practical rating for indoor equipment subject to light spray or for sheltered outdoor fixtures.
IP58 is dust-protected and rated for continuous immersion in water under manufacturer-specified conditions. A niche rating for equipment that must operate submerged while allowing limited dust ingress.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP33
3 — > 2.5 mm — Tool / Wire
IP58
5 — Dust-Protected
Liquid protection (second digit)
IP33
3 — Spraying Water (up to 60°)
IP58
8 — Continuous Immersion (manufacturer-specified)
Dust-tight
IP33
No
IP58
Limited
Water-jet resistant
IP33
No
IP58
Yes
Submersible
IP33
No
IP58
Yes
Outdoor suitable
IP33
No
IP58
Yes
The exact difference (IP33 vs IP58)
Solid protection
IP33
Level 3 — > 2.5 mm — Tool / Wire
IP58
Level 5 — Dust-Protected
IP33 provides "> 2.5 mm — Tool / Wire" (level 3), while IP58 provides "Dust-Protected" (level 5). IP58 is 2 levels higher.
Liquid protection
IP33
Level 3 — Spraying Water (up to 60°)
IP58
Level 8 — Continuous Immersion (manufacturer-specified)
IP33 handles 80 kPa (tube) / 50 kPa (nozzle) (Spraying Water (up to 60°)), while IP58 handles Specified by manufacturer (Continuous Immersion (manufacturer-specified)). IP58 provides 5 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP58 offers higher overall protection than IP33. Choose IP58 for harsher environments; IP33 may suffice for milder conditions and can be more cost-effective.