Insulation monitoring device for unearthed AC/DC control circuits (IT systems)

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.

  • 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
Besleme Gerilimi Besleme Gerilimi Type Art No Art No
AC DC Screw-type terminal Push-wire terminal
16…72 V, 15…460 Hz 9.6…94 V IR425-D4-1 B91036403 B71036403
70…300 V, 15…460 Hz 70…300 V IR425-D4-2 B91036402 B71036402

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