IP03 vs IP16
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP03 and IP16 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 1) and liquid protection (level 3 vs 6). IP03 is rated for no protection and spraying water (up to 60°), while IP16 provides > 50 mm — back of hand and powerful water jets (12.5 mm nozzle).
Designed for environments requiring no protection against solid objects and protection against spraying water. Water sprayed at an angle up to 60° on either side of the vertical shall have no harmful effects., IP03 is an IEC 60529 code combining solid level 0 with liquid level 3.
IP16 is an ingress protection code that ensures protection against solid objects larger than 50 mm and protection against powerful water jets. Water projected in powerful jets by a 12.5 mm nozzle against the enclosure from any direction shall have no harmful effects.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 1 with second-digit (liquid) level 6.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP03
0 — No Protection
IP16
1 — > 50 mm — Back of Hand
Liquid protection (second digit)
IP03
3 — Spraying Water (up to 60°)
IP16
6 — Powerful Water Jets (12.5 mm nozzle)
Dust-tight
IP03
No
IP16
No
Water-jet resistant
IP03
No
IP16
Yes
Submersible
IP03
No
IP16
No
Outdoor suitable
IP03
No
IP16
Yes
The exact difference (IP03 vs IP16)
Solid protection
IP03
Level 0 — No Protection
IP16
Level 1 — > 50 mm — Back of Hand
IP03 provides "No Protection" (level 0), while IP16 provides "> 50 mm — Back of Hand" (level 1). IP16 is 1 level higher.
Liquid protection
IP03
Level 3 — Spraying Water (up to 60°)
IP16
Level 6 — Powerful Water Jets (12.5 mm nozzle)
IP03 handles 80 kPa (tube) / 50 kPa (nozzle) (Spraying Water (up to 60°)), while IP16 handles 100 kPa (Powerful Water Jets (12.5 mm nozzle)). IP16 provides 3 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP16 offers higher overall protection than IP03. Choose IP16 for harsher environments; IP03 may suffice for milder conditions and can be more cost-effective.