IP00 vs IP55
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP00 and IP55 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 5) and liquid protection (level 0 vs 5). IP00 is rated for no protection and no protection, while IP55 provides dust-protected and water jets (6.3 mm nozzle).
IP00 offers no protection against solid objects or moisture. It is suitable only for indoor, climate-controlled environments where the equipment is fully enclosed within another protective housing.
IP55 is dust-protected and resists low-pressure water jets (6.3 mm nozzle, 30 kPa). A popular industrial rating for equipment exposed to dust and directed water spray but not immersion.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP00
0 — No Protection
IP55
5 — Dust-Protected
Liquid protection (second digit)
IP00
0 — No Protection
IP55
5 — Water Jets (6.3 mm nozzle)
Dust-tight
IP00
No
IP55
Limited
Water-jet resistant
IP00
No
IP55
Yes
Submersible
IP00
No
IP55
No
Outdoor suitable
IP00
No
IP55
Yes
The exact difference (IP00 vs IP55)
Solid protection
IP00
Level 0 — No Protection
IP55
Level 5 — Dust-Protected
IP00 provides "No Protection" (level 0), while IP55 provides "Dust-Protected" (level 5). IP55 is 5 levels higher.
Liquid protection
IP00
Level 0 — No Protection
IP55
Level 5 — Water Jets (6.3 mm nozzle)
IP00 provides "No Protection" (level 0), while IP55 provides "Water Jets (6.3 mm nozzle)" (level 5). IP55 is 5 levels higher.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP55 offers higher overall protection than IP00. Choose IP55 for harsher environments; IP00 may suffice for milder conditions and can be more cost-effective.