IP04 vs IP59K
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP04 and IP59K are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 0 vs 5) and liquid protection (level 4 vs 9K). IP04 is rated for no protection and splashing water (all directions), while IP59K provides dust-protected and high-pressure, high-temp water jets.
The IP04 rating offers no protection against solid objects and protection against splashing water. Water splashed 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 4.
The IP59K classification guarantees dust-protected (limited ingress, no harmful deposit) and resistance to high-pressure (8–10 MPa), high-temperature (80 °C) water jets. It is an IEC 60529 ingress protection code combining first-digit (solid) level 5 with second-digit (liquid) level 9K.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP04
0 — No Protection
IP59K
5 — Dust-Protected
Liquid protection (second digit)
IP04
4 — Splashing Water (all directions)
IP59K
9 — High-Pressure, High-Temp Water Jets
Dust-tight
IP04
No
IP59K
Limited
Water-jet resistant
IP04
No
IP59K
Yes
Submersible
IP04
No
IP59K
Yes
Outdoor suitable
IP04
Yes
IP59K
Yes
The exact difference (IP04 vs IP59K)
Solid protection
IP04
Level 0 — No Protection
IP59K
Level 5 — Dust-Protected
IP04 provides "No Protection" (level 0), while IP59K provides "Dust-Protected" (level 5). IP59K is 5 levels higher.
Liquid protection
IP04
Level 4 — Splashing Water (all directions)
IP59K
Level 9 — High-Pressure, High-Temp Water Jets
IP04 handles 50–100 kPa (Splashing Water (all directions)), while IP59K handles 8–10 MPa (High-Pressure, High-Temp Water Jets). IP59K provides 5 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP59K offers higher overall protection than IP04. Choose IP59K for harsher environments; IP04 may suffice for milder conditions and can be more cost-effective.