THERMASREG® FST-K

Mechanical frost protection thermostat ⁄ Frost monitor THERMASREG® FST-K with switching output, duct pipe monitored along its entire length, with automatic reset or with mechanical interlock, optionally with / without manual reset.


The frost protection monitor is suitable for air-side temperature monitoring of heat exchangers
and heating registers against freezing and to prevent frost damage, e.g. in ventilation and air conditioning ducts. The FST-K is intrinsically safe, with sensor break detection. If the capillary tube membrane system is damaged, the frost sensor automatically switches to the heating function. Delivery includes mounting flange MF-14-K.