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LR3D3557 Schneider Electric Industrial Automation Components

LR3D3557 on Powermatic Associates
Schneider Electric

Part#:LR3D3557

Manufacturer:Schneider Electric

Category:Industrial Automation Components

Product Lifecycle:Active

Product description

Schneider Electric LR3D3557 is a non-differential thermal overload relay designed for unbalanced networks within the LR3D range. It features a direct to contactor connection type and is equipped with 3 poles. This part offers protection functions specifically for thermal overload with settings adjustable from 37 to 50A, class 20. It includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The rated voltage for AC phase-to-phase operation is up to 690 V at frequencies from 0 to 400Hz. The LR3D3557 operates within a minimum current of 37 A and a maximum current of 50 A.

Product Details

  • [Ui] Rated Insulation Voltage
    Power circuit 1000 V IEC 60947-4-1 Power circuit 600 V CSA Power circuit 600 V UL
  • Connections - Terminals
    Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) flexible without cable end Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) flexible with cable end Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) solid
  • Mounting Support
    Plate, with specific accessories Rail, with specific accessories Under contactor
  • Tightening Torque
    Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals Power circuit 79.66 lbf.in (9 N.m) screw clamp terminals
  • Network Type
    AC DC
  • Associated Fuse Rating
    4 A gG signalling circuit 4 A BS signalling circuit
  • Control Type
    Red push-button stop Blue push-button reset
  • Product Compatibility
    LC1D95 LC1D80
  • Net Weight
    1.18 lb(US) (0.535 kg)
  • Depth
    4.76 in (121 mm)
  • Width
    2.95 in (75 mm)
  • Temperature Compensation
    -4…140 °F (-20…60 °C)
  • Phase Failure Sensitivity
    Tripping current 130 % of Ir on two phase, the last one at 0
  • [Uimp] Rated Impulse Withstand Voltage
    6 kV IEC 60947-1
  • [Ue] Rated Operational Voltage
    690 V AC 0...400 Hz power circuit IEC 60947-4-1
  • [Ith] Conventional Free Air Thermal Current
    5 A signalling circuit
  • Auxiliary Contact Composition
    1 NO + 1 NC
  • Network Frequency
    0...400 Hz
  • Thermal Protection Adjustment Range
    37…50 A
  • Thermal Overload Class
    Class 20 IEC 60947-4-1
  • Tripping Threshold
    1.14 +/- 0.06 Ir IEC 60947-4-1
  • Product Name
    TeSys LRD
  • Device Short Name
    LR3D
  • Range
    TeSys
  • Relay Application
    Motor protection
  • Product Or Component Type
    Non differential thermal overload relay

Product condition

New Factory Sealed

New Factory Sealed - New condition, never used, original OEM part with original packaging and factory seal.
The price of LR3D3557 on Powermatic Associates is $171.61. Order now.

LR3D3557 Related Documents

Product Datasheet-1631037671109.pdfInstruction Sheet-1631037671105.pdfCatalog-1631037671108.pdf

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LR3D3557 Schneider Electric

$171.61

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Schneider Electric

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Schneider Electric LR3D3557 is a non-differential thermal overload relay designed for unbalanced networks within the LR3D range. It features a direct to contactor connection type and is equipped with 3 poles. This part offers protection functions specifically for thermal overload with settings adjustable from 37 to 50A, class 20. It includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The rated voltage for AC phase-to-phase operation is up to 690 V at frequencies from 0 to 400Hz. The LR3D3557 operates within a minimum current of 37 A and a maximum current of 50 A.

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