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The 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.

+44 (0)1229 480123
Low Mill Business Park, Ulverston, Cumbria. LA12 9EE
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