I need enclosures that can handle rain, splashes, or temporary submersion — how are they tested for water ingress?

Water resistance is one of the most common priorities customers raise, so enclosures are tested rigorously in a certified lab against the Ingress Protection standards set out in BS EN 60529.

Testing methods scale with the rating being verified. Splash resistance (IPX4) is confirmed by spraying water from multiple directions to check nothing gets inside. Higher ratings involve full submersion — IPX7 enclosures are held at one metre depth for 30 minutes, while IPX8 testing goes deeper and longer depending on requirements.

This layered approach means an enclosure’s rating reflects real performance under rain, pressure washing, or full submersion, not just a paper specification.