Contrel CTT-4 Temperature Control Relays (RTD Relay)

Contrel CTT-4 Temperature Control Relay with 4 inputs and 2 displays with possibility of different setting for each input for alarm and trip values.  Auxilliry supply voltage 24-220Vac. Optional serial output RS232/RS485 + an analogue output AO (0/4 – 20mA).

Product Documents


Over temperatures caused by overloads or internal failure of transformers and electrical machines, inevitably leads to a reduced efficiency and energy loss in distribution systems.

To prevent and control degradation of insulating materials in electrical machines due to thermal stress, it is necessary to use integrated measurement systems such as CTT control units.

CTT-4 control units are able to read four temperature values with the help of four Pt100 probes. For each inputs it is possible to set the threshold temperature of alarm and trip with great accuracy and to display the maximum values reached.

CTT-4 control units can be supplied with the serial interface to allow remote monitoring of temperatures using a PC.


Shopping Cart
All search results
Scroll to Top