IP33 vs IP43
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP33 and IP43 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 4). IP33 is rated for > 2.5 mm — tool / wire and spraying water (up to 60°), while IP43 provides > 1 mm — small wires and spraying water (up to 60°).
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.
IP43 protects against 1 mm solid objects and spraying water up to 60° from vertical. A practical rating for sheltered equipment subject to light angled spray, such as covered outdoor fixtures.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP33
3 — > 2.5 mm — Tool / Wire
IP43
4 — > 1 mm — Small Wires
Liquid protection (second digit)
IP33
3 — Spraying Water (up to 60°)
IP43
3 — Spraying Water (up to 60°)
Dust-tight
IP33
No
IP43
No
Water-jet resistant
IP33
No
IP43
No
Submersible
IP33
No
IP43
No
Outdoor suitable
IP33
No
IP43
No
The exact difference (IP33 vs IP43)
Solid protection
IP33
Level 3 — > 2.5 mm — Tool / Wire
IP43
Level 4 — > 1 mm — Small Wires
IP33 provides "> 2.5 mm — Tool / Wire" (level 3), while IP43 provides "> 1 mm — Small Wires" (level 4). IP43 is 1 level higher.
Liquid protection
IP33
Level 3 — Spraying Water (up to 60°)
IP43
Level 3 — Spraying Water (up to 60°)
Both IP33 and IP43 share the same liquid protection: Spraying Water (up to 60°).
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP43 offers higher overall protection than IP33. Choose IP43 for harsher environments; IP33 may suffice for milder conditions and can be more cost-effective.