LED Driver IP20 / IP44 / IP50 / IP67: Protection Ratings and Selection Advice
IP20 protects against solid objects larger than 12.5 mm and offers no water protection, for dry interiors. IP44 protects against objects over 1 mm and splashing water, for semi-outdoor or humid spaces. IP50 is dust-protected but not waterproof. IP67 is dust-tight and survives temporary immersion, for rain-exposed outdoor use. Choose IP67 for landscape, facade and garden lighting; IP20 is sufficient for ceilings and light troughs.
How to read an IP code
The first digit after IP rates protection against solid objects (0–6); the second rates liquid ingress (0–9K). In IP67, '6' means dust-tight and '7' means no ingress under defined temporary immersion. Note that IP is an enclosure protection rating, not a safety certification, and cannot replace CE / CCC / ETL electrical safety and EMC compliance.
Four common ratings compared
| Rating | Solid protection | Liquid protection | Recommended environment | HUARON series |
|---|---|---|---|---|
| IP20 | Objects ≥12.5 mm | No water protection | Dry interiors, ceiling troughs | HRS / HRGS / HRU / HRL / HRCL / HRGL / HRMN |
| IP44 | Objects ≥1 mm | Splash resistant | Semi-outdoor, condensation | HRCC / HRMN |
| IP50 | Dust protected | No water protection | Dusty interiors, plastic casing | HRJS / HRJSW |
| IP67 | Dust-tight | Temporary immersion | Rain, gardens, facades | HRSW / HRGSW / HRES / HRGW / HRUW / HRCW |
Engineering selection advice
Dry interiors (ceilings, light troughs, cabinets) are fine with IP20, which also dissipates heat better. Semi-indoor spaces prone to condensation or splashing (car parks, corridors) call for IP44 or above. Rain-exposed outdoor sites, gardens, bridges and facades require IP67, preferably potted construction with a wide temperature range. HUARON waterproof lines HRSW / HRGSW / HRES / HRGW / HRUW / HRCW are all IP67.
What else to check beyond IP
For outdoor projects also verify the operating temperature range (e.g. -30 to +60°C), surge immunity, full rated power (voltage and brightness at the end of long runs), and resistance to salt spray and UV ageing. A compliant enclosure with poor thermal design or an overrated wattage still fails early outdoors.
Frequently asked questions
Can an IP67 driver stay submerged permanently?
Not recommended. IP67 means no water ingress under defined temporary immersion, not continuous underwater operation. Permanent submersion requires IP68 with explicit manufacturer confirmation.
Is a higher IP rating always better?
No. Higher protection usually means more potting and sealing, which increases thermal resistance and cost. In dry interiors IP20 actually improves heat dissipation and service life.
Do waterproof drivers still need waterproof connections?
Yes. An IP67 enclosure does not make terminals and cable joints waterproof. Outdoor installations still require waterproof connectors and proper cable sealing.
Further reading
- How to Choose Five-in-One Dimming: TRIAC, 0-10V, DALI DT6 and DT8 Compared
- LED Driver Certifications Explained: CCC, CE, ETL, CB, UKCA and FCC
- How Much Headroom Does an LED Driver Need? Power, Voltage Drop and Derating
- What Does Flicker-Free Mean, and Why Does Acceptance Testing Measure Percent Flicker?
- All product series