IP05 vs IP40
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP05 and IP40 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 4) and liquid protection (level 5 vs 0). IP05 is rated for no protection and water jets (6.3 mm nozzle), while IP40 provides > 1 mm — small wires and no protection.
Under IEC 60529, IP05 specifies no protection against solid objects and protection against water jets. Water projected by a 6.3 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 0 with second-digit (liquid) level 5.
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)
IP05
0 — No Protection
IP40
4 — > 1 mm — Small Wires
Liquid protection (second digit)
IP05
5 — Water Jets (6.3 mm nozzle)
IP40
0 — No Protection
Dust-tight
IP05
No
IP40
No
Water-jet resistant
IP05
Yes
IP40
No
Submersible
IP05
No
IP40
No
Outdoor suitable
IP05
Yes
IP40
No
The exact difference (IP05 vs IP40)
Solid protection
IP05
Level 0 — No Protection
IP40
Level 4 — > 1 mm — Small Wires
IP05 provides "No Protection" (level 0), while IP40 provides "> 1 mm — Small Wires" (level 4). IP40 is 4 levels higher.
Liquid protection
IP05
Level 5 — Water Jets (6.3 mm nozzle)
IP40
Level 0 — No Protection
IP05 provides "Water Jets (6.3 mm nozzle)" (level 5), while IP40 provides "No Protection" (level 0). IP05 is 5 levels higher.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP05 offers higher overall protection than IP40. Choose IP05 for harsher environments; IP40 may suffice for milder conditions and can be more cost-effective.