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Specification & Description
| Specification | Description |
|---|---|
| Part Number | LT3SA00ED |
| Manufacturer | Schneider |
| Product Type | Thermistor Protection Unit |
| Control Circuit Voltage | 24 to 48 V DC |
| Rated Operational Voltage (Ue) | 250 V AC 50/60 Hz |
| Rated Insulation Voltage (Ui) | 500 V AC |
| Conventional Free Air Thermal Current (Ith) | 5 A |
| Contacts Type and Composition | 1 Normally Open (NO) + 1 Normally Closed (NC), Dual Voltage |
| Reset Type | Automatic Reset |
| Number of Probes | 0 to 6 |
| Input Voltage for Probe | < 2.5 V (1500 Ohm), < 7.5 V (4000 Ohm) |
| Maximum Short Circuit Detection Resistance | 20 Ohm |
| 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 |
| Connections - Terminals | Cage type connectors for cables 0.75…2.5 mm², both flexible and solid, with and without cable end |
| Tightening Torque | 0.8 N.m |
| Dimensions (H x W x D) | 100 mm x 22.5 mm x 100 mm |
| Product Weight | 0.22 kg |
| Ambient Operating Temperature | -25 to 60 °C |
| Ambient Storage Temperature | -40 to 85 °C |
| Operating Altitude | <= 1500 m without derating in temperature |
| Vibration Resistance | 1 gn 25...150 Hz, 2.5 gn 2...25 Hz |
| Shock Resistance | 5 gn 11 ms |
| Electromagnetic Compatibility | Conforms to IEC standards for electrostatic discharge, fast transients, and surge resistance |
| Mounting | DIN Rail |
| Terminal Connection Type | Screw |
| IP Degree of Protection | IP20 |
| Standards | IEC 60947-8, IEC 60034-11, VDE 0660 |
The Schneider LT3SA00ED is a sophisticated motor protection component designed to safeguard electric motors from potential damage due to overheating. This thermistor protection unit is an integral part of the TeSys product range and is engineered to work with PTC probes, providing reliable and accurate temperature monitoring.
Featuring a control circuit voltage of 24 to 48 V DC and an automatic reset function, the LT3SA00ED ensures continuous protection without the need for manual intervention. The device is equipped with dual voltage contacts, comprising 1 Normally Open (NO) and 1 Normally Closed (NC) contact, allowing for versatile integration into various control circuits.
With a conventional free air thermal current rating of 5 A for the output control relay and a rated insulation voltage of 500 V AC, this unit is capable of handling demanding applications. The operational voltage is rated at 250 V AC for 50/60 Hz systems, making it suitable for a wide range of industrial settings.
The LT3SA00ED also features fault indication for quick diagnostics and a control type that supports automatic reset, enhancing the ease of use. The unit is designed to be interchangeable with probes labelled mark A conforming to IEC 60034-11, ensuring compatibility with standard equipment.
This thermistor protection unit is compact, with dimensions of 100 mm in height, 22.5 mm in width, and 100 mm in depth, allowing for easy installation on a DIN rail with a simple screw mounting method. The robust design includes a cage type connector for secure and reliable connections to the power circuit.
Built to withstand challenging industrial environments, the LT3SA00ED operates effectively within an ambient temperature range of -25 to 60 °C and is rated for use at altitudes up to 1500 m without derating in temperature. It also boasts a high level of electromagnetic compatibility, ensuring stable operation even in areas with potential electrical disturbances.
The Schneider LT3SA00ED is a high-quality component that offers dependable motor protection, ensuring the longevity and efficiency of your motor-driven systems. Its advanced features and durable construction make it a valuable addition to any industrial motor control setup.
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Frequently Asked Questions
What type of protection does this unit offer for motors?
The unit provides thermistor protection for motors, monitoring the temperature via PTC probes to prevent overheating and potential damage.
Can this device be mounted on a DIN rail?
Yes, it is designed for DIN rail mounting, making it suitable for integration into control panels and equipment racks.
What are the voltage specifications for the control circuit?
The control circuit voltage for the device is 24 to 48 V DC, with control circuit voltage limits ranging from 0.8 to 1.25 times the control circuit voltage (Uc).
What is the reset mechanism of this device?
The device features an automatic reset mechanism, which allows it to automatically reset after a fault condition has been cleared.
What are the dimensions of this thermistor protection unit?
The dimensions are 22.5 mm in width, 100 mm in height, and 100 mm in depth.
What is the IP degree of protection for this unit?
The unit has an IP20 degree of protection, conforming to IEC 60529 and VDE 0106 standards.
What is the ambient operating temperature range for this device?
The ambient operating temperature range is from -25 to 60 degrees Celsius.
How many probes can be connected to this thermistor protection unit?
Up to 6 PTC probes can be connected to the unit for comprehensive motor protection.
What is the rated insulation voltage for the output control relay?
The rated insulation voltage for the output control relay is 500 V AC.
What is the significance of the probe interchangeability feature?
Probe interchangeability with label mark A conforming to IEC 60034-11 allows for flexibility and compatibility with different PTC probes.
