IP49K vs IP53
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP49K and IP53 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 4 vs 5) and liquid protection (level 9K vs 3). IP49K is rated for > 1 mm — small wires and high-pressure, high-temp water jets, while IP53 provides dust-protected and spraying water (up to 60°).
Built to withstand protection against solid objects larger than 1.0 mm and resistance to high-pressure (8–10 MPa), high-temperature (80 °C) water jets. Classified as IEC 60529 ingress protection code IP49K, it pairs solid level 4 with liquid level 9K.
Built to withstand dust-protected (limited ingress, no harmful deposit) and protection against spraying water. Water sprayed at an angle up to 60° on either side of the vertical shall have no harmful effects.. Classified as IEC 60529 ingress protection code IP53, it pairs solid level 5 with liquid level 3.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP49K
4 — > 1 mm — Small Wires
IP53
5 — Dust-Protected
Liquid protection (second digit)
IP49K
9 — High-Pressure, High-Temp Water Jets
IP53
3 — Spraying Water (up to 60°)
Dust-tight
IP49K
No
IP53
Limited
Water-jet resistant
IP49K
Yes
IP53
No
Submersible
IP49K
Yes
IP53
No
Outdoor suitable
IP49K
Yes
IP53
No
The exact difference (IP49K vs IP53)
Solid protection
IP49K
Level 4 — > 1 mm — Small Wires
IP53
Level 5 — Dust-Protected
IP49K provides "> 1 mm — Small Wires" (level 4), while IP53 provides "Dust-Protected" (level 5). IP53 is 1 level higher.
Liquid protection
IP49K
Level 9 — High-Pressure, High-Temp Water Jets
IP53
Level 3 — Spraying Water (up to 60°)
IP49K handles 8–10 MPa (High-Pressure, High-Temp Water Jets), while IP53 handles 80 kPa (tube) / 50 kPa (nozzle) (Spraying Water (up to 60°)). IP49K provides 6 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP49K offers higher overall protection than IP53. Choose IP49K for harsher environments; IP53 may suffice for milder conditions and can be more cost-effective.