TR250
12410-0701-03
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Application and short description
Short Description
Thermostats TR 250 monitor up to 3 sensors at the same time. Output-relays and sensors can be associated
freely. Several programs like monitoring 3 sensors for the same switching point with common alarm (e.g. for
monitoring motors or transformers) are selectable.
Applications
Protection of motors or generators against overload, also with simultaneous monitoring of
temperatures in bearings
Protection of dry transformers against overload, also with control of a forced cooling
General protection of motors and machines against over-temperatures
Temperature-controller, also for refrigerating systems
Monitoring of differences in temperature
Resolution 0.1 °C for measuring range
–19.9...99.9 selectable
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Function Overview
sensor-inputs, Pt 100 (RTD) or Pt 1000 in 2- or 3-wire-connection
KTY 83, -84, PTC (thermistors)
relay-outputs (1 change-over-contact each)
universal power-supply AC/DC 24-240 V
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Connecting diagram