Schneider LTMR27MFM Controller

Core Performance & Industrial Application

The Schneider Electric LTMR27MFM is a TeSys T motor management controller rated 1.35-27 A, 100-240 VAC supply, with Modbus RS485 communication.

Monitors phase RMS currents, average current, earth-fault current and current unbalance; protects against long-time overload, phase loss/unbalance, locked rotor, earth fault and thermal overtemp.

6 logic inputs, 3 logic outputs (5 A @250 VAC / 5 A @30 VDC); Modbus 2-wire RS485, address 1-247, 1.2-19.2 kbit/s via RJ45 or terminal.

It pairs with TeSys D/LC contactors for protected motor feeder control on Modbus plant networks.

Technical Specifications

▶ Product type: Motor management controller (protection relay)

▶ Brand: Schneider Electric TeSys T

▶ Model: LTMR27MFM

▶ Measurement: 1.35-27 A; 3-phase RMS, earth fault, unbalance, power factor, temperature

▶ Supply: 100-240 VAC 50/60 Hz (2-264 VAC range); 8-62.8 mA

▶ Communication: Modbus RTU 2-wire RS485; 1.2-19.2 kbit/s; address 1-247; RJ45

▶ I/O: 6 digital inputs; 3 logic outputs; 5 A @250VAC / 5 A @30VDC

▶ Protection: Overload, phase loss/unbalance, locked rotor, earth fault, thermal, power factor

▶ Insulation: Ui 690 V (IEC 60947-4-1); weight 0.53 kg

▶ Feature: Programmable thresholds, Modbus telemetry, pre-alarm

▶ Note: Current CT range and contactor pairing confirmed from nameplate before ordering

▶ Country of origin: France

▶ Compliance: CE, UL 508, CSA C22.2, IEC 60947-4-1 certification

Industry Applications

Applied in protected motor feeder management, pump/compressor/line starter monitoring and TeSys T controller spare replacement on Modbus control networks.

Note: Confirm current setting range, wiring and contactor rating against nameplate before ordering