Overview
The Schneider Electric LT3SE00BD is a PTC probe thermistor protection relay from the TeSys LT3 series. Rated at 24VDC with automatic reset capability, this relay provides robust motor temperature and voltage protection in industrial automation and motor control applications. Designed for use with PTC probe sensors, the LT3SE00BD delivers reliable fault detection and signaling.
Key Features
- 24VDC single voltage supply with automatic reset function
- 1 auxiliary contact (1NC) for fault signaling
- DIN rail mounting with cage terminal connections
- PTC probe impedance compatibility: sensors with impedance lower than 1500 Ohm at 25°C
- Trip impedance zone: 2700–3100 Ohm; automatic reset zone: 1500–1650 Ohm
- Compact, eco-friendly design suitable for control cabinets and motor starters
Technical Specifications
- Supply Voltage: 24VDC
- Contact Configuration: 1NC (normally closed)
- Reset Mode: Automatic reset
- PTC Probe Impedance (Max): 1500 Ohm @ 25°C
- Trip Impedance Zone: 2700–3100 Ohm
- Automatic Reset Impedance Zone: 1500–1650 Ohm
- Mounting: DIN rail
- Connection Type: Cage terminals
- Weight: 100 g
- Standards: IEC 34-11-2 Type A; VDE 0660
- Series: TeSys LT3
- Manufacturer: Schneider Electric (TELEMECANIQUE)
Typical Applications
- Motor protection in industrial machinery and conveyor systems
- Temperature monitoring of electric motors and transformers
- Voltage and thermal fault detection in control systems
- Integration with motor starters, soft starters, and VFDs
- HVAC, pump stations, and manufacturing automation equipment
Compatibility & Replacements
Compatible With
- Schneider Electric motor starters and contactors
- TeSys industrial motor control solutions
- DIN rail-mounted industrial control panels
- PTC thermistor probe sensors with impedance <1500 Ohm
- 24VDC control circuits and automation systems
Replaces / Drop-In Replacement For
Verify with your system integrator or original equipment documentation for exact replacement compatibility. The LT3SE00BD is part of the TeSys LT3 series and may replace other LT3 variants depending on your application requirements.
Works With
- Schneider Electric EcoStruxure Control Expert software
- Industrial motor control architectures using PTC probe thermistors
- Modbus and EtherNet/IP industrial networks (when integrated with compatible controllers)
- Standard 24VDC automation and control systems
