IP44 means protected against solid objects larger than 1mm (first digit 4) and against water splashing from all directions (second digit 4). It's the standard rating for flush-mounted switches, indoor sockets in residential bathrooms, and small junction boxes in dry, protected indoor environments.
What the digits mean
First digit 4 means the enclosure keeps out objects larger than 1mm. That covers most wires, screws, and small tools, but not dust. The test uses a 1mm-diameter rigid wire probe. If the probe can't reach live or moving parts, it passes.
Second digit 4 is identical to IP54 on the water side: splash-proof from all directions. The difference between IP44 and IP54 is entirely about dust. IP44 stops 1mm objects. IP54 stops dust (with limited ingress). Same water rating. Very different environments.
IEC 60529 test conditions
IP44 test parameters
| Test | Method | Key parameter |
|---|---|---|
| Solids (IP4X) | 1mm diameter rigid wire probe | Must not contact hazardous parts |
| Water (IPX4) | Oscillating spray from all directions | 10 min, no harmful ingress |
Products that carry IP44
The biggest category is residential wiring accessories. Flush-mounted light switches and socket outlets in bathrooms (zone 2 and beyond, per IEC 60364-7-701) frequently carry IP44. Small junction boxes for surface wiring in dry indoor locations. Indoor distribution boards in residential settings, particularly in utility rooms and garages.
Ceiling-mounted luminaires for bathrooms and covered porches sometimes carry IP44 when the manufacturer wants to claim splash protection without the cost of a full IP65 test. Some indoor fan coil units and small HVAC components also sit at IP44.
IP44 vs IP54 vs IP65
The three most commonly confused indoor/outdoor boundary ratings.
| Rating | Solids protection | Water protection | Typical use |
|---|---|---|---|
| IP44 | Objects >1mm | Splash | Residential bathrooms, light indoor |
| IP54 | Dust (limited) | Splash | Factory floors, warehouses |
| IP65 | Dust-tight | Water jets | Outdoor, food processing |
IP44 does not protect against dust. In any environment with airborne particles, specify IP54 as a minimum. IP44 is for clean, dry indoor spaces where splash protection is the primary concern.
When IP44 is appropriate
IP44 works in two scenarios. Residential installations where the wiring regulations require splash protection but the environment is clean (bathrooms, laundry rooms, covered outdoor areas with no direct weather exposure). And light commercial indoor spaces, such as retail stockrooms or office mechanical rooms, where dust is not a factor but the occasional splash from a mop bucket or condensation drip is possible.
If yes, IP44 is not sufficient. Move to IP54 (indoor) or IP65 (outdoor or washdown).
If yes, skip IP44 entirely. You need IP65 at minimum.
If the location is clean and indoor with only splash risk, IP44 fits. Bathrooms, utility rooms, covered patios.
Check any IP rating code with the IP rating validator. For the complete reference of all digits and their test methods, see the IP rating chart. If you need help choosing between common ratings for an installation, start with the IP54 vs IP65 vs IP67 comparison.