WIKA TFS135 bimetal temperature switch

The TFS135 bimetal temperature switch has been designed by WIKA for a wide range of applications and is suitable for switching voltages of up to 250 VAC at 2.5 A.

The TFS135 conforms to the EU low-voltage directive. It has been designed for switching temperatures of +50 to +130°C, selectable in stages of 5 K and set permanently on delivery. With a vibration resistance of up to 10g, the TFS135 is designed to operate reliably even under harsh conditions. Electrical plug connections make it easier to commission.

The switch is primarily used for the protection of plants and end devices against overheating. The bimetal disc of the TFS135 detects the temperature and triggers the switch contact (normally closed) on reaching the nominal value. After cooling to the reset temperature, the circuit is closed once more and the monitored item is placed back into normal operation.