What is a din rail?

A din rail is a metal or plastic bar used as a standardized mounting platform for control equipment in industrial and commercial applications. It is designed to mount a wide range of devices, such as circuit breakers, terminal blocks, power supplies, relays, and other control components in a symmetrical fashion. The din rail is typically equipped with slots or holes to allow for the secure and organized mounting of components. The rail is usually made of aluminum or stainless steel, and it is available in different sizes to accommodate different applications. The term "din" comes from the German phrase "Deutsche Industrie Norm," which means "German industry standard." Din rails are widely used in industrial automation, power distribution, building automation, and other control applications.