The Schneider Electric BMEXBP0400 is an expansion rack of the Modicon X80 series with 4 slots. It is used for housing and expanding Modicon X80 modules, which are used in conjunction with M340, M580, and other controllers. Its compact design saves space in the control cabinet, while the robust construction ensures a long service life. The simple installation allows for quick integration into existing automation systems. This makes it ideally suited for flexible and scalable control solutions.