Technical Parameters Parameter Value / Range Product Series TeSys LT3 Device Short Name LT3SE Model LT3SE00M Product Type Thermistor protection unit (PTC probe relay) Control Circuit Voltage [Uc] 230 V AC 50/60 Hz Control Circuit Voltage Limits 0.85...1.1 Uc Reset Type Automatic reset (without fault memory) Contacts Type and Composition 1 NC (normally closed) single 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 Rated Impulse Withstand Voltage [Uimp] 2.5 kV 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 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 Without (no fault indicator light for LT3SE version) 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 conforming to IEC 60068-2-2 Operating Altitude <= 1500 m without derating in temperature / >1500...3000 m with derating in temperature Standards IEC 60947-8, IEC 60034-11, VDE 0660