For connectors in the subway braking system, how to avoid short circuits caused by humid environments?

A: Prioritize connectors with an IP67+ protection rating (such as WS series aviation connectors). At the same time, use corrosion-resistant materials (such as nickel-plated brass) with a salt spray test rating of ≥1000h. If the ambient humidity exceeds 95%, an additional silicone sealing ring can be added to further improve waterproof and sealing performance.