BASIC FUNCTIONS:

• The LST thermal overload relays are designed for:
    • Inverse-time delayed protection of loads from overloading
    • Inverse-time delayed protection of loads from phase failure

• TRIP CLASSES
    The LST thermal overload relays are available for normal starting conditions with trip class 10.

• PHASE FAILURE PROTECTION
    The LST thermal overload relays are fitted with phase failure sensitivity in order to minimize temperature rises of the load
    in the case of a phase failure during single-phase operation.

• SETTING
    The LST thermal overload relays are set to the rated motor current by means of a rotary knob. The scale of the rotary
    knob is shown in ampere.

• MANUAL AND AUTOMATIC RESET
    Automatic and manual reset is selected by pressing and turning the blue button (RESET button).

• RECOVERY TIME
    After tripping due to overload, the LST thermal overload relays require some time until the bimetal strips have cooled down

• TEST FUNCTION
    The TEST slide can be used to check whether the operational LST thermal overload relay is working properly

• STOP FUNCTION
    If the STOP button is pressed, the NC contact is opened

• AUXILIARY CONTACTS
    The LST thermal overload relays are fitted with an NO contact for the "tripped" signal, and an NC contact for disconnecting the contactor.

  TYPE: LSTD / LST0 / LST2 / LST3

  APPLICATIONS:

  SIZE OF CONTACTOR :S00, S0, S2, S3

• SIZE S00 up to 12A
• SIZE S0 up to 25A
• SIZE S2 up to 50A
• SIZE S3 up to 100A

  RATED OPERATIONAL VOLTAGE: Ue 690/1000 VAC

  RATED FREQUENCY :50/60 Hz

  RIP CLASS: Class 10

  THERMAL OVERLOAD RELEASE

• LSTD integrated 0.11 … 12 A
• LST0 integrated 1.8 … 25 A
• LST2 integrated 5.5 … 50 A
• LST3 integrated 18 … 100 A