IP03 vs IP56
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP03 and IP56 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 5) and liquid protection (level 3 vs 6). IP03 is rated for no protection and spraying water (up to 60°), while IP56 provides dust-protected 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.
IP56 is dust-protected and resists powerful water jets (12.5 mm nozzle, 100 kPa). Suited to outdoor equipment subjected to heavy rain or hose-directed water.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP03
0 — No Protection
IP56
5 — Dust-Protected
Liquid protection (second digit)
IP03
3 — Spraying Water (up to 60°)
IP56
6 — Powerful Water Jets (12.5 mm nozzle)
Dust-tight
IP03
No
IP56
Limited
Water-jet resistant
IP03
No
IP56
Yes
Submersible
IP03
No
IP56
No
Outdoor suitable
IP03
No
IP56
Yes
The exact difference (IP03 vs IP56)
Solid protection
IP03
Level 0 — No Protection
IP56
Level 5 — Dust-Protected
IP03 provides "No Protection" (level 0), while IP56 provides "Dust-Protected" (level 5). IP56 is 5 levels higher.
Liquid protection
IP03
Level 3 — Spraying Water (up to 60°)
IP56
Level 6 — Powerful Water Jets (12.5 mm nozzle)
IP03 handles 80 kPa (tube) / 50 kPa (nozzle) (Spraying Water (up to 60°)), while IP56 handles 100 kPa (Powerful Water Jets (12.5 mm nozzle)). IP56 provides 3 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP56 offers higher overall protection than IP03. Choose IP56 for harsher environments; IP03 may suffice for milder conditions and can be more cost-effective.