Comparison of two enclosures after long-term UV exposure—on the right, a GRP enclosure installed in 2016 shows significant degradation with exposed glass fibers, while on the left, a Fibox EK polycarbonate enclosure has remained durable and intact after over 25 years in harsh conditions.
Tested to the Limit: 3000-Hour Solar Radiation Exposure
Fibox enclosures underwent rigorous testing at Eurofins Electric & Electronics Finland Oy, following ISO 4892-1 and ISO 4892-2 (Method A, Cycle 4) at the end of year 2024 (referred to as test B). The test simulated long-term outdoor exposure using the following conditions:
- UV intensity: 60 W/m²
- Temperature: +38°C, 50% RH
- Spray cycle: 18 minutes every 2 hours
- Duration: 3000 hours (equivalent to ~25 years of sun exposure)
- Rotation: Weekly repositioning for uniform exposure
The properties of the simulated solar radiation, and those of natural light. Figure shows the spectrum of sunlight according to CIE 85-1989 (for AM 1.5) and the spectrum of the simulated radiation in the wavelength range of 250-2500 nm.
All samples were positioned in the test area, and repositioned once every week.
ARCA IEC that was installed October 21st 2013 after 11 years of outdoor exposure in Central Europe.
Conclusion: Confidence That Lasts Decades
Fibox enclosures are more than just UV-resistant—they are UV-resilient. Backed by rigorous testing and decades of field performance, they offer unmatched protection for your critical components in the harshest environments.
Whether you're installing solar panels in the desert or smart sensors in the Arctic, Fibox enclosures are built to last—without getting "wrinkles."
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Looking for a suitable outdoor enclosure or cabinet? We're happy to consult you to find the right protection for your project.
