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Schneider Electric LT3SE00BD Thermistor Protection Units, Tesys LT3, 250VAC 50/60Hz, 24VDC, 1NC, Automatic Reset
Schneider Electric LT3SE00BD Thermistor Protection Units, Tesys LT3, 250VAC 50/60Hz, 24VDC, 1NC, Automatic Reset
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Product Description

Schneider Electric LT3SE00BD Thermistor Protection Units, Tesys LT3, 250VAC 50/60Hz, 24VDC, 1NC, Automatic Reset


TeSys LT3 thermistor protection unit for use with PTC probes, with automatic reset, single voltage supply 24V DC. To be used with a combination of PTC probes impedance lower than 1500 Ohm at 25°C, the trip impedance zone is 2700-3100 Ohm, the automatic reset impedance zone is 1500-1650 Ohm. It provides 1 auxiliary contact 1NC for fault signaling. DIN rail mounting, connections by cage terminals. PTC thermistor probes DA1TT, DA1TS available (to be ordered separately). Multi-standards certified (IEC, UL, CSA), Green Premium compliant (RoHs/Reach).

Main

  • Range of Product: LT3
  • Device Short Name: LT3SE
  • Product or Component Type: Thermistor Protection Units
  • [Uc] Control Circuit Voltage: 24 V DC
  • Reset: Automatic Reset

Complementary

  • Control Circuit Voltage Limits: 0.8...1.25 Uc
  • Contacts Type and Composition: 1 NC Single Voltage
  • [Ith] Conventional Free Air Thermal Current: 5 A for Output Control Relay
  • [Ui] Rated Insulation Voltage: Output Control Relay: 500 V AC
  • [Ue] Rated Operational Voltage: 250 V AC 50/60 Hz for Output Control Relay
  • Signalling Function: Without
  • Control Type: Automatic Reset
  • Probe Interchangeability: Label Mark A conforming to IEC 60034-11
  • Hold-in Power Consumption:
    • W: 1 W
    • VA: 2.5 VA
  • Resistance:
    • Reset: 1500…1650 Ohm
    • Tripping: 2700…3100 Ohm
  • Number of Probes: 0…6
  • Input Voltage:
    • < 2.5 V (1500 Ohm) for Probe
    • < 7.5 V (4000 Ohm) for Probe conforming to IEC 60034-11
  • Maximum Short Circuit Detection Resistance: 20 Ohm
  • Condition of Use:
    • Connection of Probes 400 m >1 mm²
    • Connection of Probes 300 m >0.75 mm²
  • [Uimp] Rated Impulse Withstand Voltage: 2.5 kV
  • Rated Power in VA: 100 VA at 220 V - Electrical Durability: 500,000 cycles
  • Breaking Capacity:
    • 2 A at 24 V DC DC-13
    • 3 A at 250 V AC AC-16
    • 6 A at 120 V AC AC-16
  • Connections - Terminals:
    • Power circuit: cage type connector 1 cable(s) 0.75…2.5 mm²flexible with cable end
    • Power circuit: cage type connector 1 cable(s) 0.75…2.5 mm²solid with cable end
    • Power circuit: cage type connector 1 cable(s) 1…2.5 mm²flexible without cable end
    • Power circuit: cage type connector 1 cable(s) 1…2.5 mm²solid without cable end
    • Power circuit: cage type connector 2 cable(s) 0.75…2.5 mm²flexible with cable end
    • Power circuit: cage type connector 2 cable(s) 0.75…2.5 mm²solid with cable end
    • Power circuit: cage type connector 2 cable(s) 1…2.5 mm²flexible without cable end
    • Power circuit: cage type connector 2 cable(s) 1…2.5 mm²solid without cable end
  • Tightening Torque: 0.8 N.m
  • Height: 100 mm
  • Width: 22.5 mm
  • Depth: 100 mm
  • Net Weight: 0.22 kg

Environment

  • Standards:
    • IEC 60947-8
    • IEC 60034-11
    • VDE 0660
  • IP Degree of Protection: IP20 conforming to IEC 60529, IP20 conforming to VDE 0106
  • Ambient air temperature for operation: -25…60 °C
  • Ambient air temperature for storage:
    • -40…85 °C conforming to IEC 60068-2-2
    • -40…85 °C conforming to IEC 60068-2-2
  • Operating Altitude:
    • <= 1500 m without derating in temperature
    • > 1500...3000 m with derating in temperature
  • Vibration Resistance:
    • 1 gn 25...150 Hz conforming to IEC 60068-2-6
    • 2.5 gn 2...25 Hz conforming to IEC 60068-2-6
  • Shock Resistance: 5 gn 11 ms conforming to IEC 60068-2-27
  • Electromagnetic Compatibility:
    • Resistance to Electrostatic Discharge Level 3 conforming to IEC 61000-4-2
    • Resistance to Fast Transient Level 3 conforming to IEC 61000-4-4
    • Surge Resistance 1.2/50-8/20 Level 4 conforming to IEC 61000-4-5
    • Susceptibility to Electromagnetic Fields Level 3 conforming to IEC 61000-4-3
    • Immunity to Microbreaks and Voltage Drops conforming to IEC 61000-4-11
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