IP33 vs IP64
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP33 and IP64 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 6) and liquid protection (level 3 vs 4). IP33 is rated for > 2.5 mm — tool / wire and spraying water (up to 60°), while IP64 provides dust-tight and splashing water (all directions).
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.
IP64 is dust-tight and resists splashing water from any direction. A solid outdoor-covered rating combining complete dust exclusion with splash tolerance, sitting between IP65 (jets) and IP54 (dust-protected).
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP33
3 — > 2.5 mm — Tool / Wire
IP64
6 — Dust-Tight
Liquid protection (second digit)
IP33
3 — Spraying Water (up to 60°)
IP64
4 — Splashing Water (all directions)
Dust-tight
IP33
No
IP64
Yes
Water-jet resistant
IP33
No
IP64
No
Submersible
IP33
No
IP64
No
Outdoor suitable
IP33
No
IP64
Yes
The exact difference (IP33 vs IP64)
Solid protection
IP33
Level 3 — > 2.5 mm — Tool / Wire
IP64
Level 6 — Dust-Tight
IP33 provides "> 2.5 mm — Tool / Wire" (level 3), while IP64 provides "Dust-Tight" (level 6). IP64 is 3 levels higher.
Liquid protection
IP33
Level 3 — Spraying Water (up to 60°)
IP64
Level 4 — Splashing Water (all directions)
IP33 handles 80 kPa (tube) / 50 kPa (nozzle) (Spraying Water (up to 60°)), while IP64 handles 50–100 kPa (Splashing Water (all directions)). IP64 provides 1 level more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP64 offers higher overall protection than IP33. Choose IP64 for harsher environments; IP33 may suffice for milder conditions and can be more cost-effective.