The RM148 is an Earth Leakage Relay manufactured by Lovato. It is a SPDT (single pole double throw) relay with an operating voltage from 24 to 48V AC, 24 to 48V DC, and a temperature range from -10 to 60°C. This relay is designed for installation in DIN rail mountable equipment. It is used for protection, metering, automation, control, and distribution systems. It has an adjustable trip time, and adjustable sensitivity as well as built-in surge protection for extra protection. The earth leakage relay can be used in applications such as motor controls, lighting systems, domestic and commercial energy management, and more.