IP01 vs IP33
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP01 and IP33 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 3) and liquid protection (level 1 vs 3). IP01 is rated for no protection and vertically dripping water, while IP33 provides > 2.5 mm — tool / wire and spraying water (up to 60°).
IP01 provides no protection against solid objects and protection against vertically falling drops of water. Dripping water shall have no harmful effects.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 0 with second-digit (liquid) level 1.
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.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP01
0 — No Protection
IP33
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP01
1 — Vertically Dripping Water
IP33
3 — Spraying Water (up to 60°)
Dust-tight
IP01
No
IP33
No
Water-jet resistant
IP01
No
IP33
No
Submersible
IP01
No
IP33
No
Outdoor suitable
IP01
No
IP33
No
The exact difference (IP01 vs IP33)
Solid protection
IP01
Level 0 — No Protection
IP33
Level 3 — > 2.5 mm — Tool / Wire
IP01 provides "No Protection" (level 0), while IP33 provides "> 2.5 mm — Tool / Wire" (level 3). IP33 is 3 levels higher.
Liquid protection
IP01
Level 1 — Vertically Dripping Water
IP33
Level 3 — Spraying Water (up to 60°)
IP01 handles 0.1 mm/min drip rate (Vertically Dripping Water), while IP33 handles 80 kPa (tube) / 50 kPa (nozzle) (Spraying Water (up to 60°)). IP33 provides 2 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP33 offers higher overall protection than IP01. Choose IP33 for harsher environments; IP01 may suffice for milder conditions and can be more cost-effective.