ISOMETER® IR425-D4

•  Insulation monitoring device for AC and DC IT systems
•  Application control circuits
•  According to IEC 61557-8
•  Two separately configurable response values
•  Multi-functional LC display

The ISOMETER® of the IR425 series is designed to 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. An external supply voltage allows de-energized systems to be monitored too.