IP01 vs IP18
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP01 and IP18 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 1) and liquid protection (level 1 vs 8). IP01 is rated for no protection and vertically dripping water, while IP18 provides > 50 mm — back of hand and continuous immersion (manufacturer-specified).
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.
The IP18 classification guarantees protection against solid objects larger than 50 mm and protection against the effects of continuous immersion in water under conditions specified by the manufacturer.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 1 with second-digit (liquid) level 8.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP01
0 — No Protection
IP18
1 — > 50 mm — Back of Hand
Liquid protection (second digit)
IP01
1 — Vertically Dripping Water
IP18
8 — Continuous Immersion (manufacturer-specified)
Dust-tight
IP01
No
IP18
No
Water-jet resistant
IP01
No
IP18
Yes
Submersible
IP01
No
IP18
Yes
Outdoor suitable
IP01
No
IP18
Yes
The exact difference (IP01 vs IP18)
Solid protection
IP01
Level 0 — No Protection
IP18
Level 1 — > 50 mm — Back of Hand
IP01 provides "No Protection" (level 0), while IP18 provides "> 50 mm — Back of Hand" (level 1). IP18 is 1 level higher.
Liquid protection
IP01
Level 1 — Vertically Dripping Water
IP18
Level 8 — Continuous Immersion (manufacturer-specified)
IP01 handles 0.1 mm/min drip rate (Vertically Dripping Water), while IP18 handles Specified by manufacturer (Continuous Immersion (manufacturer-specified)). IP18 provides 7 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP18 offers higher overall protection than IP01. Choose IP18 for harsher environments; IP01 may suffice for milder conditions and can be more cost-effective.