TeSys LRD - electronic thermal overload relay - 3P - 1.6...8 A


TeSys LRD - electronic thermal overload relay - 3P - 1.6...8 A


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TeSys LRD - electronic thermal overload relay - 3P - 1.6...8 A


TeSys LR9D electronic overload relay, 8A/690V, thermal setting range 1.6-8A, selectable tripping class 5-10-20-30, for protection of 3-phase motors 0.75-3kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, buttons for test, stop and reset as well as manual-automatic reset selector, dipswitches for tripping class selection, 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 LC1D09-D38. Mounting on DIN rail or screw fixing, separated from contactor, with use of the terminal block LAD7B205 (to be ordered separately). Multi-standards certified (IEC, UL, CSA, CCC), Green Premium compliant (RoHs/Reach).

Product details

  • [ue] Rated Operational Voltage
    690 V for power circuit
  • [ui] Rated Insulation Voltage
    power circuit: 1000 V
  • [uimp] Rated Impulse Withstand Voltage
    6 kV
  • Ambient Air Temperature for Operation
    -25-70 °C conforming to IEC 60255-8
  • Ambient Air Temperature for Storage
    -55-80 °C
  • Control Type
    red push-button: stop and manual reset
  • Depth
    79.9 mm
  • Device Short Name
  • Dielectric Strength
    6 kV 50 Hz conforming to IEC 60255-5
  • Electromagnetic Compatibility
    surge withstand: 2 kV common mode conforming to IEC 61000-4-5
  • Height
    72.5 mm
  • Ip Degree of Protection
    IP20 front face conforming to IEC 60529
  • Mechanical Robustness
    vibrations 10...150 Hz: 6 Gn conforming to IEC 60068-2-6
  • Mounting Support
    under contactor
  • Net Weight
    0.18 kg
  • Power Consumption in w
    300 mW
  • Product Certifications
    IECEE CB Scheme
  • Product Compatibility
  • Product Name
    TeSys LRD
  • Product or Component Type
    electronic thermal overload relay
  • Range
  • Standards
    EN/IEC 60947-4-1
  • Tightening Torque
    control circuit: 0.8 N.m on screw clamp terminals
  • Width
    45 mm
  • Connections - Terminals
    control circuit: screw clamp terminals 1 cable 2.5-2.5 mm² - cable stiffness: solid or flexible - without cable end
  • [ith] Conventional Free Air Thermal Current
    5 A for signalling circuit
  • Associated Fuse Rating
    5 A gG for signalling circuit
  • Operating Altitude
    2000 m without derating
  • Phase Failure Sensitivity
    phase difference > 40% 3-3 s conforming to IEC 60947-4-1
  • Relay Application
    motor protection
  • Thermal Overload Class
    class 5…30
  • Thermal Protection Adjustment Range
    1.6-8 A
  • Time Range
    1.5...4 min - automatic reset time
  • Tripping Threshold
    1.25 In conforming to IEC 60947-4-1
more specification
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