IP49K
Last updated: Aug 9, 2026Built 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.
Solid 4
> 1 mm — Small Wires
Liquid 9K
High-Pressure, High-Temp Water Jets
What IP49K means
The IP code IP49K is part of the IEC 60529 standard for ingress protection. The first characteristic numeral, 4, indicates the level of protection against solid objects and access to hazardous parts. The second numeral, 9K, indicates the level of protection against the ingress of water. Together, these digits describe exactly what an enclosure rated IP49K can withstand.
For solid protection, the digit 4 means the enclosure is > 1 mm — small wires. Protected against access to hazardous parts with a wire. Protected against solid foreign objects of 1 mm diameter and greater. The test method is access probe (1.0 mm rigid test wire) shall not penetrate with adequate clearance.
For liquid protection, the digit 9K means the enclosure resists high-pressure, high-temp water jets. Protection against high-pressure and high-temperature water jets. Water projected in powerful jets against the enclosure from any direction shall have no harmful effects. Often designated IPx9K. The test procedure is fan-shaped 80° nozzle at 14–16 l/min, 8–10 mpa pressure, water temperature 80 °c; enclosure on turntable hit at 0°, 30°, 60°, 90° for 30 seconds each.
IP49K is a valid IEC 60529 combination. When specifying IP49K for a project, confirm the rating certificate from the manufacturer and consider that seals degrade over time with temperature cycling, UV exposure, and chemical contact.
Full specification table
| Parameter | Solid digit (4) | Liquid digit (9K) |
|---|---|---|
| Protection level | > 1 mm — Small Wires | High-Pressure, High-Temp Water Jets |
| Description | Protected against access to hazardous parts with a wire. Protected against solid foreign objects of 1 mm diameter and greater. | Protection against high-pressure and high-temperature water jets. Water projected in powerful jets against the enclosure from any direction shall have no harmful effects. Often designated IPx9K. |
| Test method | Access probe (1.0 mm rigid test wire) shall not penetrate with adequate clearance. | Fan-shaped 80° nozzle at 14–16 L/min, 8–10 MPa pressure, water temperature 80 °C; enclosure on turntable hit at 0°, 30°, 60°, 90° for 30 seconds each. |
| Object size / water pressure | 1.0 mm wire | 8–10 MPa |
| Test distance | Per standard | 100–150 mm |
| Test duration | Per standard | 30 seconds × 4 positions (2 min total) |
Typical applications
Food-processing equipment
Pharmaceutical washdown stations
Heavy-duty vehicle electronics
NEMA equivalent
Recommended products for IP49K
IP49K washdown sensor
All IP49K comparisons
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