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Non-self-resetting Thermal Protectors series CR6/SR6

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Application: Non-self-resetting Thermal Protectors (TP) with normally closed contacts are utilized for overheating protection of all kinds of electric equipment or devices, for example in windings of transformers and motors according to EN 60742. They are applied, where protection against overheating is required and where an automatic reset of the device after overheating and subsequent cooling is not permitted or desired.

Design: The Thermal Protectors R6 are based on the well proven mechanism of Thermik’s product series 06. A thick-film heating resistor RH , parallel to the contacts, effects an electrically operated self locking mechanism.
  • SR6 with insulation cap
  • CR6 without insulation cap.

    Operation: If, in case of overheating, the rated switching temperature of the bimetallic disc is reached, it suddenly snaps over and opens the contact.
    When the contact is open, the heating resistor RH is activated and prevents the temperature to fall below the reset temperature of the bimetallic disc. Only after switching off the operating voltage and after a relative short cooling phase the bimetallic disc resets to close the contact.

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    Item #

    Item Name

    Diameter dmax

    Height hmax

    Lengths of Insulation Cap Imax

    Contact Type

    Nominal Switching Temperature

    Switch Insulation

    CR6 Type R6 Non-Self-Resetting Thermal Protector without Insulation Cap 9.3 mm 7.2 mm N/A Normally Closed (NC) 70 - 200 ºC N/A
    SR6 Type R6 Non-Self-Resetting Thermal Protector with Insulation Cap 9.8 mm 7.6 mm 17 mm Normally Closed (NC) 70 - 200 ºC insulation cap Mylar - Nomex ®
      Results 1 - 2 of 2 1