The TFH is a three-in-one freezestat that incorporates a temperature monitor, delay timer, and high-limit controller into one compact and conventional unit. It is typically used in air make-up equipment. The low limit monitors the temperature to the desired set point and will shut down the system if the set point temperature is not achieved by the set point time. The high limit monitors the temperature and will shut down the system if the temperature exceeds the set point.
- Low limit and high limit with manual reset
- Fail-safe design
- Indicator lamps for high or low limit
- Easy to install
- UL353 and applicable parts of UL991 approval