Solcon TPR-6 Temperature Protection Relay


The Solcon TPR-6 Temperature Protection Relay is designed to protect electric motors, transformers and other systems from overheating. The TPR-6 has up to 14 temperature inputs that can be programmed to measure thermistors (PTC or NTC) and RTDs (Pt100).


  • Advanced microprocessor based circuitry
  • Display of operating RTD or Thermistor Data, Fault and Statistics
  • Programmable inputs and outputs
  • RS-485 communication with MODBUS protocol
  • Easy installation and friendly operation
  • Two level protection for Alarm and Trip
  • Selection between Trip and Trip fail-safe
  • Analog output related to any input or input combinations
  • RTD / Thermistor selection – RTDs 100 ohm Platinum (PT100) – Thermistor – PTC or NTC
  • Disconnected sensor protection.
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The Solcon TPR-6 monitors 1-14 RTD/Thermistor temperature inputs. It accurately measures the temperature increase to protect the motor / transformer from damage due to heat build-up in the windings and / or bearings. The built-in self test protects against disconnected sensors and operator faults.

Options include Conformal coating and Modbus connectivity.

Protection Features

  • RTD / Thermistor with two levels for each input
  • Thermistor PTC / NTC selection
  • Over temperature Alarm and Trip to each input
  • Continuous analog output signal
  • External fault 1 and 2


Protection Functions

  • Exact input can be assigned to any of the following items:
    • Alarm only – Relay A
    • Trip only – Relay B
    • Fan (Trip, Alarm)- Relay C
    • Trip/Alarm- Relay D
    • Enabling Auto Reset


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Solcon TPR-6 Specifications

Solcon TPR-6 Wiring Diagram

Solcon TPR-6 Dimensions


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