TPR 6 - Temperature Protection Relay

tpr6MIThe TPR-6 Monitors 6 to 14 RTD / Thermistor

temperature inputs.

The TPR-6 accurately creates "Thermal Levels" of

the heat increase to protect the motor/Load from

abnormal heat in the windings and or bearings.

Self test procedure protects against disconnected

sensors and operator faults.

Advantages At A Glance

  • Advanced microprocessor based circuitry
  • Display of RTD's or Thermistor's Operating Data, Fault and Statistics.
  • Programmable inputs and outputs
  • RS 485 communication, MODBUS protocol, for remote setting and supervision
  • Easy installation & friendly operation
  • Two protection levels for Alarm and Trip
  • Selection between Trip and Trip fail-safe
  • Analogue Output related to any input or inputs


  • RTD / Thermistor selection via Dip Switches
  • Disconnected sensor protection

Protection Features

  • RTD / Thermistor Selection (Any Input)
  • Thermistor PTC / NTC selection (Any Thermistor Input)
  • Over temperature Alarm Input number 1..14
  • Over temperature Trip Input number 1..14
  • Continuous analog output signal
  • External fault 1 (from N.O/N.C. contact)

Protection Functions

  • Each protection can be designated as:
  • Alarm only - Relay A
  • Trip only - Relay B
  • Alarm & Trip
  • Disabled
  • Enabling Auto Reset
  • Programmable Relay C


  • L.V. and M.V. motors (Windings & Bearings)
  • Motors driven by Variable Frequency Drives
  • Transformers
  • Multi RTD and bearing devices such as turbines