The temperature limiter TB225 is used for applications where thermal processes must be monitored and the system must be switched to a safe operating state in the case of a fault. The device has universal inputs for the connection of double thermocouples,Pt100 sensors, and normized signals (0/4..20mA or 0/2..10V). The safety function is provided by means of the main relay with configurable threshold. An additional relay with an independently adjustable threshold is provided for additional signalling. The TB225 also offers an analog output which can be freely defined within the measuring range of the temperature input. The resetting of the device in the operating mode as a temperature limiter can take place via the buttons on the front, the integrated graphic display, or using an external switch or external voltage. The TB225 has safe 3-way electrical isolation between input, output, and auxiliary voltage.

●For use as a temperature limiter or monitor
●Certified according to EN 14597, optional EN 61508 (SIL2)
●Intuitive operation: Illuminated graphic display
●Display colour change in the event of an alarm "white / red"
●Safe 3-way galvanic isolation
●Wide range power supply 18..230 V AC / DC

Parameter Name	Parameter Value
Display	digital
Protection level	IP20
Other characteristics	safety universal configurable
Maximum temperature	Max.: 1,600 °C (2,912 °F)Min.: -150 °C (-238 °F)
Maximum temperature (°C)	-150 - 1600