EN 343: Foul Weather Protection

EN 343 is a European standard that sets the requirements for protective clothing designed to provide foul weather protection. This standard ensures that garments offer reliable protection against rain, wind, and other adverse weather conditions. The purpose of EN 343 is to keep workers comfortable and safe in challenging outdoor environments.


EN 343 covers a wide range of protective clothing, including jackets, trousers, and full-body suits. It focuses on the performance of garments in terms of their resistance to water penetration (waterproofness) and the ability to allow moisture vapor (breathability) to escape.

Testing Methods

EN 343 employs specific testing methods to evaluate the water penetration resistance and breathability of protective clothing. These tests involve subjecting the garment to controlled water pressure and measuring its performance.

Performance Levels

EN 343 assigns performance levels to garments based on their water resistance (X) and water vapour resistance (Y). The levels range from 1 to 3, with higher numbers indicating better performance.

Additional Requirements

In addition to water penetration and breathability, EN 343 may also specify additional requirements such as visibility (EN ISO 20471) or protection against cold (EN 14058) for garments designed for specific applications.

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