3RN1 Thermistor Motor Protection

for protection against overheating

Advantages at a glance

  • Direct measuring of the motor winding temperature

  • one device for all motor power ratings

  • Device/terminal labeling acc. to DIN EN 50005 for “normal” switching relays and for overload protection systems

  • Relays with hard gold-plated contacts for application under difficult conditions

  • Indication of wire breakage and short circuit in the sensor circuit via LED

  • Version with protective separation up to 300 V in accordance with DIN/VDE 0106 as well as version with bistable relays for special cases

  • ATEX approval for gases and dust


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