IP33 vs IP50
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP33 and IP50 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 5) and liquid protection (level 3 vs 0). IP33 is rated for > 2.5 mm — tool / wire and spraying water (up to 60°), while IP50 provides dust-protected and no protection.
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.
Under IEC 60529, IP50 specifies dust-protected (limited ingress, no harmful deposit) and no protection against water. It is an IEC 60529 ingress protection code combining first-digit (solid) level 5 with second-digit (liquid) level 0.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP33
3 — > 2.5 mm — Tool / Wire
IP50
5 — Dust-Protected
Liquid protection (second digit)
IP33
3 — Spraying Water (up to 60°)
IP50
0 — No Protection
Dust-tight
IP33
No
IP50
Limited
Water-jet resistant
IP33
No
IP50
No
Submersible
IP33
No
IP50
No
Outdoor suitable
IP33
No
IP50
No
The exact difference (IP33 vs IP50)
Solid protection
IP33
Level 3 — > 2.5 mm — Tool / Wire
IP50
Level 5 — Dust-Protected
IP33 provides "> 2.5 mm — Tool / Wire" (level 3), while IP50 provides "Dust-Protected" (level 5). IP50 is 2 levels higher.
Liquid protection
IP33
Level 3 — Spraying Water (up to 60°)
IP50
Level 0 — No Protection
IP33 provides "Spraying Water (up to 60°)" (level 3), while IP50 provides "No Protection" (level 0). IP33 is 3 levels higher.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP33 offers higher overall protection than IP50. Choose IP33 for harsher environments; IP50 may suffice for milder conditions and can be more cost-effective.