LR9F7581

TeSys LRF - electronic thermal overload relay - 380...630 A - class 20

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LR9F7581

TeSys LRF - electronic thermal overload relay - 380...630 A - class 20

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LR9F7581
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TeSys LRF - electronic thermal overload relay - 380...630 A - class 20

Description

TeSys LR9F electronic overload relay, thermal setting range 380-630A, class 20, for protection of motors 250-355kW@400V. to be mounted directly below a TeSys F 3-pole contactor LC1 F400, F500, F630, F800, use of a support mounting plate LA7F902 is mandatory (to be ordered separately). Motor protection includes thermal overload of 1-phase and 3-phase motors, phase failure, phase unbalance, prolonged starting times, stalled rotor conditions. On the front of the relay, it provides a thermal adjustement dial, buttons for test, stop & reset, a trip indicator, trip auxiliary contacts 1NO+1NC. Multi standards certified (IEC, UL, CSA, CCC, Marine), Green Premium compliant (RoHs/Reach).

Product details

  • [ue] Rated Operational Voltage
    1000 V AC 50/60 Hz for power circuit conforming to VDE 0110 group C
  • [ui] Rated Insulation Voltage
    power circuit: 1000 V AC conforming to IEC 60947-4
  • [uimp] Rated Impulse Withstand Voltage
    8 kV conforming to IEC 60947-1
  • Ambient Air Temperature for Operation
    -20-55 °C conforming to IEC 60255-8
  • Ambient Air Temperature for Storage
    -40-85 °C
  • Compatibility Code
    LR9F
  • Contacts Type and Composition
    1 NO + 1 NC
  • Control Type
    dial white full-load current adjustment
  • Depth
    127.6 mm
  • Device Short Name
    LR9F
  • Dielectric Strength
    6 kV 50 Hz conforming to IEC 255-5
  • Electromagnetic Compatibility
    resistance to electrostatic discharge: 6 kV in indirect mode conforming to IEC 61000-4-2
  • Fire Resistance
    850 °C conforming to IEC 60695-2-1
  • Height
    228.8 mm
  • Ip Degree of Protection
    IP20 conforming to IEC 60529
  • Mechanical Robustness
    shocks: 13 Gn for 11 ms conforming to IEC 60068-2-7
  • Mounting Support
    direct on contactor
  • Net Weight
    4.16 kg
  • Network Frequency
    50/60 Hz
  • Network Type
    AC
  • Product Certifications
    UL
  • Product Compatibility
    LC1F400...LC1F630
  • Product Name
    TeSys LRF
  • Product or Component Type
    electronic thermal overload relay
  • Range
    TeSys
  • Standards
    IEC 60947-4-1
  • Tightening Torque
    control circuit: 1.2 N.m on screw clamp terminals
  • Width
    193 mm
  • Connections - Terminals
    control circuit: screw clamp terminals 1 cable 0.75-2.5 mm² - cable stiffness: flexible - with cable end
  • [ith] Conventional Free Air Thermal Current
    5 A for control circuit
  • Current Consumption
    <= 5 mA no-load
  • Local Signalling
    trip indicator
  • Maximum Voltage Drop
    <2.5 V closed state
  • Operating Altitude
    <= 2000 m without derating
  • Phase Failure Sensitivity
    tripping in 4 s +/- 20 % conforming to IEC 60947-4-1
  • Protective Treatment
    TH
  • Relay Application
    motor protection
  • Reset
    manual reset
  • Signalling Function
    pre-alarm indicator
  • Surge Withstand
    4 kV conforming to IEC 61000-4-5
  • Switching Capacity in Ma
    0...150 mA
  • Temperature Compensation
    -20-70 °C
  • Thermal Overload Class
    class 20 conforming to IEC 60947-4
  • Thermal Protection Adjustment Range
    380-630 A
  • Tripping Threshold
    1.12 +/- 0.06 In tripping conforming to IEC 60947-4-1
  • Rated Power in w
    100 VA at 24 V AC
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