Sepam Series 20 is a protection relay range designed for standard distribution system applications. It provides 7 types of digital current or voltage protection for standard distribution systems, each one dedicated to a single application. The remote advanced UMI module DSM303 for Sepam series 20, 40, 60, 80. It include 2 LEDs for sepam operating status on front face and 9 LEDs for indication of parameters on front face. Mechanical dimensions are 117 mm in height, 152 mm in width and 40 mm in depth. The degree of protection is IP52.