The Schneider Electric LT3SA00ED is a thermistor protection unit from the TeSys LT3 range, designed to monitor motor winding temperatures equipped with Positive Temperature Coefficient (PTC) probes. Key features include:

• Control Circuit Voltage: Operates within a range of 24 to 48 V DC, accommodating standard industrial power supplies.

• Reset Function: Automatic reset functionality ensures seamless recovery after fault conditions.

• Contact Configuration: Equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) dual voltage contact, providing reliable signaling for control circuits.

• Thermal Current Rating: Conventional free air thermal current of 5 A for the output control relay, suitable for various industrial applications.

• Insulation Voltage: Rated insulation voltage of 500 V AC for the output control relay, ensuring operational safety.

• Operational Voltage: Rated operational voltage of 250 V AC at 50/60 Hz for the output control relay, compatible with standard AC systems.

• Resistance Thresholds:

• Reset: 1500 to 1650 Ohms

• Tripping: 2700 to 3100 Ohms

• Probe Compatibility: Supports connection of 0 to 6 PTC probes, allowing flexibility in monitoring multiple motor windings.

• Mounting: Designed for DIN rail mounting, facilitating easy integration into control panels.

Telemecanique - LT3SA00ED - Thermistor Protection Unit, 24–48V DC, 1NO+1NC