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