Siemens 3UN2100-0AN7 Thermistor Motor Protection Relay 220-240V Used

Siemens 3UN2100-0AN7 thermistor motor protection relay designed for monitoring PTC thermistors in electric motors. Provides reliable overheating protection and automatic trip functionality. Removed from a working industrial environment and in good used condition.

Item details

• Brand: Siemens

• Model: 3UN2100-0AN7

• Type: Thermistor motor protection relay (PTC relay)

• Supply voltage: 220–240VAC, 50/60Hz

• Function: Motor temperature monitoring via PTC sensors

• Outputs:

  • 1 NO contact (97-98)

  • 1 NC contact (95-96)

• Indicators:

  • “Ready” LED

  • “Tripped” LED

• Standards: IEC / VDE compliant (see label)

• Mounting: DIN rail

• Made in Germany

Electrical ratings

• AC-15: up to 3A @ 250V

• AC-15: 1.5A @ 400V

• DC-13: 2A @ 24V

• Max current: 6A

Condition

• Used, pulled from working equipment

• Visible dust and signs of use

• Terminals intact

• Front indicators and markings clear

• No original packaging

Notes

• Designed for use with PTC thermistors embedded in motors

• Trips relay when temperature threshold is exceeded

• Widely used in industrial motor protection systems

• See photos for exact condition and specifications