What steps can I take to prevent UV damage to outdoor electrical enclosures?

Unprotected exposure to UV radiation can degrade an enclosure’s materials over time, which can in turn affect the internal electronics and lead to failures.

Installation location matters: placing an enclosure on the sheltered side of a building, out of direct sunlight, helps preserve it over the long term. Beyond placement, the enclosure material itself needs to be built for the job — high-grade UV-resistant polycarbonate is a strong choice, and it’s worth checking that a product has passed recognised weathering tests, such as a 1000-hour test under DIN EN ISO 4892-2 (formerly DIN 53 387) and UL 746C weathering standards, before specifying it for a long-term outdoor installation.