Schneider Electric Relay 24VDC LT3SE00BD

Schneider Electric LT3SE00BD TeSys LT3 PTC Probe Relay with Automatic Reset

The Schneider Electric LT3SE00BD is a thermistor protection unit designed to monitor and safeguard motors and equipment from overheating. By interfacing with Positive Temperature Coefficient (PTC) thermistor probes embedded in motor windings or other machinery components, this relay detects temperature anomalies and initiates protective measures to prevent potential damage.

Key Features

• Automatic Reset Functionality: The relay automatically resets once normal operating conditions are restored, ensuring minimal downtime and continuous protection.
• Control Circuit Voltage: Operates with a 24 V DC control circuit voltage, making it compatible with various industrial applications.
• Contact Configuration: Equipped with a single normally closed (1 NC) contact for reliable fault signaling.
• Probe Compatibility: Supports up to six PTC probes with an impedance lower than 1500 Ohms at 25°C. The trip impedance zone is between 2700 and 3100 Ohms, while the automatic reset impedance zone ranges from 1500 to 1650 Ohms.
• Mounting and Connections: Designed for DIN rail mounting with cage-type terminals, facilitating easy installation and secure connections.
• Standards Compliance: Meets multiple international standards, including IEC, UL, and CSA certifications, ensuring high-quality performance and safety.

Technical Specifications

• Conventional Free Air Thermal Current (Ith): 5 A for output control relay.
• Rated Insulation Voltage (Ui): 500 V AC for output control relay.
• Rated Operational Voltage (Ue): 250 V AC, 50/60 Hz for output control relay.
• Short Circuit Detection Resistance: Less than 20 Ohms.
• Operating Ambient Temperature Range: -25°C to +60°C.
• Storage Temperature Range: -40°C to +85°C.
• Operating Altitude: Up to 1500 meters without derating; above 1500 meters up to 3000 meters with derating.
• Dimensions (H x W x D): 100 mm x 22.5 mm x 100 mm.
• Product Weight: 0.22 kg.
• IP Degree of Protection: IP20.

The LT3SE00BD is an ideal solution for applications requiring continuous temperature monitoring and automatic recovery, ensuring the longevity and reliability of your equipment.