TeSys K - differential thermal overload relays - 1.2...1.8 A - class 10A


TeSys K - differential thermal overload relays - 1.2...1.8 A - class 10A

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TeSys K - differential thermal overload relays - 1.2...1.8 A - class 10A



TeSys LRK thermal overload relay, 1.8A/690V, thermal setting range 1.2-1.8A, tripping class 10A, for protection of 3-phase motors 0.55kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector, a test slide switch for simulation of a tripping, reset/stop button, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1K06-K16. Mounting on DIN rail, separated from the contactor, with use of a terminal block LA7K0064 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC), Green Premium compliant (RoHs/Reach).

Product details

  • [ue] Rated Operational Voltage
    <= 690 V for power circuit
  • [ui] Rated Insulation Voltage
    power circuit: 690 V conforming to BS 4941
  • [uimp] Rated Impulse Withstand Voltage
    6 kV
  • Ambient Air Temperature for Operation
    -20-55 °C without derating conforming to IEC 60947
  • Ambient Air Temperature for Storage
    -40-70 °C
  • Compatibility Code
  • Control Type
    red push-button: trip test function
  • Depth
    65 mm
  • Device Short Name
  • Fire Resistance
    850 °C conforming to IEC 60695-2-1
  • Flame Retardance
    V1 conforming to UL 94
  • Height
    58 mm
  • Ip Degree of Protection
    IP2x conforming to IEC 60529
  • Mechanical Robustness
    shocks NO contact: 10 Gn for 11 ms conforming to IEC 60068-2-27
  • Mounting Support
    under contactor
  • Net Weight
    0.145 kg
  • Network Frequency
    <= 400 Hz
  • Network Type
  • Product Certifications
  • Product Compatibility
  • Product Name
    TeSys LRK
  • Product or Component Type
    differential thermal overload relay
  • Range
  • Range of Product
    TeSys K thermal overload relays
  • Standards
    IEC 60947
  • Tightening Torque
    1.3 N.m - on screw clamp terminals - with screwdriver Philips No 2
  • Width
    45 mm
  • Connections - Terminals
    screw clamp terminals 1 cable(s) 1.5-4 mm²solid
  • [ith] Conventional Free Air Thermal Current
    6 A for signalling circuit
  • Associated Fuse Rating
    6 A gG for signalling circuit conforming to VDE 0660
  • Auxiliary Contact Composition
    1 NO + 1 NC
  • Local Signalling
    trip indicator (yellow)
  • Operating Altitude
    2000 m without derating
  • Phase Failure Sensitivity
    yes conforming to IEC 60947-4-1
  • Power Dissipation Per Pole
    2 W
  • Protective Treatment
    TC conforming to IEC 60068
  • Relay Application
    motor protection
  • Thermal Overload Class
    class 10A conforming to IEC 60947-4-1
  • Thermal Protection Adjustment Range
    1.2-1.8 A
more specification
less specification


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