Schutztemperaturbegrenzer "Smarty Hot", selbsthaltend Typ 162 571

Type 162 571

Thermal Cut-out "Smarty Hot"

The thermal cut-out 162 571 is suitable wherever the power supply in an electrical appliance must be interrupted permanently when the preset maximum temperature is exceeded. The contact remains open until the appliance is disconnected from the power supply. A typical application is overheat protection in electric heaters e.g. oil radiators.

A bimetal disc is used as a temperature sensing element. Irrespective of the thermostat mounting position, this disc is pressed directly against the mounting plate and can therefore react quickly to changes in temperature. As soon as the preset temperature is reached the bimetal disc operates and opens the electrical contact, interrupting the circuit. This activates an internal heating element which heats the bimetal disc and prevents it from snapping back automatically. The electric latch function remains active up to an ambient temperature of –20 °C.

The appliance is switched on again when the power supply is interrupted. Upon cooling, the bimetal disc snaps back into its original position, closing the circuit again.

The thermal cut-out is also available with a snap-on plastic cover. For high switch-off temperatures a ceramic cover can be used, which must be fastened by means of the appliance.

  • Easy mounting
  • Fast thermal response
  • Ceramic housing
  • High force to open contact
  • Various types of terminal and fixing
  • High holding temperature
  • Long life
  • Latch function up to– 20 °C ambient temperature when mounted
  • No reset mechanism required
  • Automatic reset when power is disconnected


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