
Siemens 3UG4581-1AW31 insulation monitoring relay for non-grounded (IT) networks up to 400 V AC, 50-60 Hz measuring. Siemens 3UG4581-1AW31 is the exact printed commercial reference for a monitoring relay in the SIRIUS 3UG range. Siemens' official product description is: insulation monitoring relay for non-grounded (IT) networks up to 400 V AC, 50-60 Hz measuring range 1-100 kOhm supply voltage 24-240 V AC/DC 22.5 mm, 1 changeover contact screw terminal.
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