Leroy-Somer LS ESS250MTE-T Electric Motor – IP55, EFF1, TEFC, IEC Standard

The Leroy-Somer LS ESS250MTE-T is a premium-grade three-phase asynchronous electric motor, engineered for high performance in demanding industrial environments. Designed to EFF1 (high-efficiency) standards, this motor is optimized for continuous-duty (S1) operation and delivers reliable power with minimal losses.

Housed in a 250M frame and conforming to IEC 60034 and IEC 60072 standards, this motor features IP55 protection against dust and water jets, making it suitable for harsh environments. The TEFC (IC411) cooling system enhances durability while maintaining optimal thermal performance.

The motor operates across multiple voltage ratings (380V–460V Delta) and dual-frequency support (50/60 Hz), making it versatile for global industrial use. It is equipped with C3-grade bearings—6314 C3 at the drive end and 6212 C3 at the non-drive end—lubricated with ESSO UNIREX N3, a high-performance industrial grease.

Its B3 foot-mounted configuration ensures easy installation, while the vibration level (Class A) and noise emission ≤85 dB(A) meet modern standards for mechanical performance and workplace safety.

Specifications:

– Brand: Leroy-Somer
– Model: LS ESS250MTE-T
– Serial Number: 641328SL001
– Power Output: [Not readable; likely high-power motor]
– Frame Size: 250M
– Mounting Type: B3 (Foot-mounted)
– Voltage Ratings (Δ): 380V, 400V, 415V, 440V, 460V
– Frequency: 50 / 60 Hz
– Efficiency Class: EFF1 (High Efficiency)
– Duty Cycle: S1 (Continuous Duty)
– Protection Class: IP55 (Dust-protected, Water-jet resistant)
– Insulation Class: F
– Cooling Method: IC411 (Totally Enclosed Fan Cooled - TEFC)
– Drive End Bearing: 6314 C3
– Non-Drive End Bearing: 6212 C3
– Lubrication: ESSO UNIREX N3
– Noise Level: ≤85 dB(A)
– Vibration Class: A
– Standards Compliance: IEC 60034 / IEC 60072
– Weight: 315 kg
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