Insulation Monitoring Relay
The ISOMETER®s of the IR425 series monitor the insulation resistance of unearthed AC/DC control circuits (IT systems) 0...300 V. DC components existing in AC/DC systems do not influence the operating characteristics.
AC/DC control circuits in the industrial sector, mechanical engineering, power plants, elevators, automation systems etc.
AC/DC control and auxiliary circuits in accordance with DIN EN 60204-1 “Electrical equipment of machines”, IEC 60204-1, EN 60204-1
AC/DC auxiliary circuits in accordance with DIN VDE 0100-725 (VDE 0100-725)
Smaller AC/DC IT systems such as lighting systems