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LT3SA00MW

The Schneider Electric LT3SA00MW is a PTC thermistor protection relay from the TeSys LT3 series . It is designed to continuously monitor the temperature of motors, generators, and other machines by using PTC (Positive Temperature Coefficient) thermistor probes embedded in the equipment windings

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Technical Parameters Parameter Value / Range Product Series TeSys LT3 Device Short Name LT3SA Model LT3SA00MW Product Type Thermistor protection unit (PTC probe relay) Control Circuit Voltage [Uc] 24...230 V AC 50/60 Hz / 24...230 V DC Control Circuit Voltage Limits 0.8...1.1 Uc Reset Type Automatic reset Contacts Type and Composition 2 C/O (2 changeover) multi-voltage Conventional Free Air Thermal Current [Ith] 5 A (for output control relay) Rated Insulation Voltage [Ui] Output control relay: 500 V AC Rated Operational Voltage [Ue] 250 V AC 50/60 Hz for output control relay Breaking Capacity 6 A at 120 V AC AC-16 / 3 A at 250 V AC AC-16 / 2 A at 24 V DC DC-13 Rated Power 100 VA at 220 V (electrical durability: 500,000 cycles) Hold-in Power Consumption < 1 W / < 2.5 VA Resistance (Probe Circuit) Tripping: 2700...3100 Ohm / Reset: 1500...1650 Ohm Number of Probes 0...6 Input Voltage (Probe Circuit) < 2.5 V (1500 Ohm) for probe / < 7.5 V (4000 Ohm) for probe conforming to IEC 60034-11 Max. Short Circuit Detection Resistance 20 Ohm Signalling Function Fault indication, Voltage indication (LED) Mounting Style DIN Rail Connections - Terminals Cage type connector (screwless) for 0.75...2.5 mm² flexible/solid wire Tightening Torque 0.8 N.m Width 22.5 mm Height 100 mm Depth 100 mm Net Weight 0.22 kg IP Degree of Protection IP20 conforming to IEC 60529 and VDE 0106 Ambient Air Temperature for Operation -25...60 °C Ambient Air Temperature for Storage -40...85 °C Standards IEC 60947-8, IEC 60034-11, VDE 0660