This high limit thermostat has a limit of 260 degrees Fahrenheit. Meaning that it will cut out when the internal dryer temperature reaches 260. This thermostat cuts back in when the temperature drops by 70 degrees Fahrenheit.
Cycling thermostats continually cycle the heating element off and on to maintain a constant inner temperature. This particular cycling thermostat has a limit of 155 degrees Fahrenheit and a differential of 25 degrees. Meaning that with this thermostat, the heating element will cut out at 155 degrees and cycle back on once the internal temperature drops by 25 degrees.
This part is a one time use thermal fuse which attaches to the blower wheel housing of your clothes dryer. It cannot be re-set and must be replaced when continuity between the pins is no longer present. Terminal size is 3/16 of an inch.
This hi-limit thermostat acts as as safety mechanism that keeps the dryer from overheating. Once the dryer temperature reaches 250 degrees Farenheit, this piece will shut down power to the heating element until it drops by 80 degrees Farenheit.
Meant as a backup to a high limit thermostat, this fuse is typically set to trip at a higher temperature than that of a high limit thermostat. This is a one time use fuse, so when it does trip, you do need to replace it. It's letting you know that something is wrong with your dryer.
This thermal fuse limiter, with a limit of 220 degrees Fahrenheit, is manufactured for both gas and electric clothes dryers. Once the internal temperature of the dryer reaches 220 degrees, the heating element cuts out.