Telemecanique LT3SM00MW Thermistor Protection Relay

Description:

The Telemecanique LT3SM00MW thermistor protection relay is an electronic motor protection relay designed to monitor PTC thermistor sensors and protect motors against overheating by disconnecting the control circuit when excessive motor temperature is detected. Commonly installed in motor control centers, pumps, compressors, fans, conveyors, and industrial process equipment where thermal monitoring is critical for motor reliability. Maintenance teams, OEMs, and system integrators use this thermistor protection relay for equipment repair, replacement, retrofit, and new motor protection installations.

Applications:

The Telemecanique LT3SM00MW thermistor protection relay provides reliable temperature monitoring for three-phase motors using embedded PTC thermistor probes. It is widely installed in manufacturing facilities, water treatment plants, mining operations, HVAC systems, material handling equipment, and industrial control panels where overheating protection helps prevent motor damage and unplanned downtime.

Technical Specifications:

• Manufacturer Part Number (MPN): LT3SM00MW
• Manufacturer: Telemecanique (Schneider Electric)
• Product Type: Thermistor Protection Relay
• Series: TeSys LT3
• Rated Voltage: 24–230 VAC/DC
• Rated Current: 5 A (Output Relay)
• Function: PTC Thermistor Motor Temperature Protection
• Output Contacts: 2 Changeover (2 C/O)
• Reset: Manual
• Number of PTC Probes: 0–6
• Mounting Style: DIN Rail Mount
• Terminal Type: Cage Clamp Terminal
• Compatible Systems: Motors equipped with IEC 60034-11 PTC thermistor sensors
• Protection Rating: IP20
• Operating Temperature: -25°C to +60°C
• Replacement Type: OEM Direct Replacement

Common Replacements:

• Schneider Electric RM35TM250MW
• Telemecanique LT3SM00MW
• OEM Equivalent PTC Thermistor Protection Relay