EN 60947-5-9 is a European Standard that specifies requirements for flow rate switches intended for use in electrical circuits within switchgear and controlgear assemblies. These switches are designed to detect and monitor the rate of flow of liquids or gases in various industrial applications. The standard outlines the technical specifications for flow rate switches, including their design, performance criteria, testing methods, and environmental conditions under which they should operate reliably.

Flow rate switches covered by EN 60947-5-9 are essential in industrial processes where monitoring and controlling the flow of fluids is critical for operational efficiency and safety. They ensure that flow conditions are maintained within specified limits, triggering electrical signals or actions based on predefined flow thresholds. This standard helps manufacturers and users ensure that flow rate switches meet stringent reliability, durability, and safety requirements in switchgear and controlgear applications.