IP00 vs IP40
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP00 and IP40 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 4). IP00 is rated for no protection and no protection, while IP40 provides > 1 mm — small wires and no protection.
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.
IP40 protects against small tools and wires (1 mm objects) but offers no water protection. Useful for indoor equipment needing finer ingress protection against small debris and tools.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP00
0 — No Protection
IP40
4 — > 1 mm — Small Wires
Liquid protection (second digit)
IP00
0 — No Protection
IP40
0 — No Protection
Dust-tight
IP00
No
IP40
No
Water-jet resistant
IP00
No
IP40
No
Submersible
IP00
No
IP40
No
Outdoor suitable
IP00
No
IP40
No
The exact difference (IP00 vs IP40)
Solid protection
IP00
Level 0 — No Protection
IP40
Level 4 — > 1 mm — Small Wires
IP00 provides "No Protection" (level 0), while IP40 provides "> 1 mm — Small Wires" (level 4). IP40 is 4 levels higher.
Liquid protection
IP00
Level 0 — No Protection
IP40
Level 0 — No Protection
Both IP00 and IP40 share the same liquid protection: No Protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP40 offers higher overall protection than IP00. Choose IP40 for harsher environments; IP00 may suffice for milder conditions and can be more cost-effective.