IP58 vs IP59K
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP58 and IP59K are both IEC 60529 ingress protection codes, but they differ in liquid protection (level 8 vs 9K). IP58 is rated for dust-protected and continuous immersion (manufacturer-specified), while IP59K provides dust-protected and high-pressure, high-temp water jets.
IP58 is dust-protected and rated for continuous immersion in water under manufacturer-specified conditions. A niche rating for equipment that must operate submerged while allowing limited dust ingress.
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)
IP58
5 — Dust-Protected
IP59K
5 — Dust-Protected
Liquid protection (second digit)
IP58
8 — Continuous Immersion (manufacturer-specified)
IP59K
9 — High-Pressure, High-Temp Water Jets
Dust-tight
IP58
Limited
IP59K
Limited
Water-jet resistant
IP58
Yes
IP59K
Yes
Submersible
IP58
Yes
IP59K
Yes
Outdoor suitable
IP58
Yes
IP59K
Yes
The exact difference (IP58 vs IP59K)
Solid protection
IP58
Level 5 — Dust-Protected
IP59K
Level 5 — Dust-Protected
Both IP58 and IP59K share the same solid protection: Dust-Protected.
Liquid protection
IP58
Level 8 — Continuous Immersion (manufacturer-specified)
IP59K
Level 9 — High-Pressure, High-Temp Water Jets
IP58 handles Specified by manufacturer (Continuous Immersion (manufacturer-specified)), while IP59K handles 8–10 MPa (High-Pressure, High-Temp Water Jets). IP59K provides 1 level more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP59K offers higher overall protection than IP58. Choose IP59K for harsher environments; IP58 may suffice for milder conditions and can be more cost-effective.