Schneider Electric LT3SE00BD Thermistor Protection Relay

Description

The Schneider Electric LT3SE00BD is a high-performance thermistor protection relay from the TeSys LT3 range. It is engineered to protect electric motors from thermal damage by continuously monitoring temperature via PTC thermistor probes. This unit operates on a 24V DC control voltage and provides a crucial safety function in industrial automation systems, preventing downtime and expensive equipment failure. Its compact form factor allows for easy installation on a standard DIN rail.

Specifications

• Manufacturer: Schneider Electric
• Type: LT3SE00BD
• Product Range: TeSys LT3
• Function: Thermistor Protection Relay
• Control Circuit Voltage (Ue): 24V DC
• Contact Rating (AC15): 6A at 120V, 3A at 250V
• Contact Rating (DC13): 2A at 24V
• Probe Compatibility: PTC thermistors conforming to IEC 34-11-2
• Mounting: 35mm DIN Rail

Label Info

• Model: LT3SE00BD
• Ue: 24V DC
• Approvals: UL LISTED 170 M, SP, CE, VDE 0660

Application

This relay is ideally suited for monitoring motors in applications such as conveyors, pumps, fans, compressors, and machine tools, where overheating can lead to critical failure.

Country of Origin

Made in France.

CO2 Impact

By purchasing this pre-owned component, you are contributing to a circular economy and helping to avoid 6.0 kg of CO2 emissions associated with the production of a new unit.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

The T1 and T2 terminals are for connecting the PTC thermistor probes embedded in the motor windings. The relay measures the resistance across these terminals to detect overheating. Do not apply external voltage to T1 and T2.

No, this specific model, LT3SE00BD, is designed exclusively for a 24V DC control supply (Ue). Applying AC voltage will damage the unit. Other models in the LT3S range exist for AC voltages.

The LT3SE00BD is designed for use with PTC thermistor probes that conform to the IEC 34-11-2 standard. This typically involves a set of 1 to 6 probes connected in series.

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Last Update: Friday, March 13, 2026