IP54 vs IP31
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP54 and IP31 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 5 vs 3) and liquid protection (level 4 vs 1). IP54 is rated for dust-protected and splashing water (all directions), while IP31 provides > 2.5 mm — tool / wire and vertically dripping water.
IP54 is dust-protected (limited ingress, no harmful deposit) and resists splashing water from any direction. A versatile rating for industrial and outdoor-covered equipment in dusty, damp environments.
The IP31 rating offers protection against solid objects larger than 2.5 mm 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 3 with second-digit (liquid) level 1.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP54
5 — Dust-Protected
IP31
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP54
4 — Splashing Water (all directions)
IP31
1 — Vertically Dripping Water
Dust-tight
IP54
Limited
IP31
No
Water-jet resistant
IP54
No
IP31
No
Submersible
IP54
No
IP31
No
Outdoor suitable
IP54
Yes
IP31
No
The exact difference (IP54 vs IP31)
Solid protection
IP54
Level 5 — Dust-Protected
IP31
Level 3 — > 2.5 mm — Tool / Wire
IP54 provides "Dust-Protected" (level 5), while IP31 provides "> 2.5 mm — Tool / Wire" (level 3). IP54 is 2 levels higher.
Liquid protection
IP54
Level 4 — Splashing Water (all directions)
IP31
Level 1 — Vertically Dripping Water
IP54 handles 50–100 kPa (Splashing Water (all directions)), while IP31 handles 0.1 mm/min drip rate (Vertically Dripping Water). IP54 provides 3 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP54 offers higher overall protection than IP31. Choose IP54 for harsher environments; IP31 may suffice for milder conditions and can be more cost-effective.