TFS35 Temperature Switch

Contact design

The model TFS35 bimetal temperature switch can be delivered in two contact designs:

A Normally Closed (NC = closed in the normal state)
- Opens a circuit and shuts down the machinery.
A Normally Open (NO = open in the normal state)
- Closes a circuit on reaching the switching temperature, in order that, for example, a fan or warning lamp can be switched on.

The contact returns to the original state after cooling down below the reset switching temperature. This is done so that the monitored equipment can again work normally.

Special features

Fixed switching temperature
Automatic reset
No additional voltage supply
Switching voltages uo to AC 48 V / 3 A

Documents

Description

Applications

Machine building
Compressors
Pumps
Cooling and heating circuits
Mobile hydraulics

Temperature switches are generally used in industry for limiting temperature. They monitor the temperature of machinery and equipment. For example, they switch off machinery if it overheats. They will also switch on a fan to cool the equipment.

Function

Bimetals form the basis of the temperature switches. Temperature sensing is carried out by a bimetal disc. Then it snaps over when the nominal switching temperature (NST) is reached.

The temperature switch returns to its original state on cooling back down to the reset switching temperature (RST).

The reset switching temperature is typically below the switching temperature.