Electric motor 11 kW, 735 rpm, 400 V / 690 V, 4LC-180L-8 LV

Compared with IE2 or IE3 class solutions, this 4LC-180L-8 with 735 rpm delivers higher efficiency for operations where every kilowatt hour is tracked. The 11 kW model is designed for pumps, fans, compressors and large machines in the 700-750 rpm speed class, while using advanced materials and refined windings for more stable operation. In practice, this means a suitable choice for drives for light and heavy industry, as well as for low speed industrial applications in environments with low voltage infrastructure, where reliability and precise behaviour under load are expected.

Lower losses during operation and higher efficiency in production cycles

An efficiency of 90.4 percent and a power factor of 0.74 help to reduce energy losses and better match the motor to a 400 V or 690 V supply network. The rated current at delta 400 V connection is 22.9 A and at star 690 V connection it reaches 13.28 A, which makes control cabinet design and the sizing of protective components easier. The starting ratio Ist/In 7.9 and the starting torque Tst/Tn 1.8 provide enough power to start loaded equipment, while the pull out torque Tmax/Tn 2 increases the reserve in transient conditions.

Parameters that help with drive design

A noise level of 70 dB(A) supports use in technical rooms where acoustic load is important, and the rotor inertia of 0.2 kg*m² helps to ensure predictable starting. The 6311-C3 bearings on the DE and NDE sides are designed for long-term operation under load, while the 2-M40X1.5 cable glands simplify installation. The unit also includes 3 PTC thermistors, which support thermal protection under adverse operating conditions.

Construction designed for a long service life in technically demanding environments

The IEC frame 180 mm and all cast iron design form a solid base for machines with higher demands for mechanical durability. The robust cast iron construction helps to absorb vibrations, contributing to smoother operation under frequent loading and when installed in a more aggressive environment. Combined with the brand’s in-house research and development, VYBO Electric creates a solution that is ready for long-term operation without unnecessary compromises.

Use in pumps, fans and other technological assemblies

• Pumps benefit from stable torque during continuous fluid transfer.
• Fans profit from a balanced ratio between speed and efficiency.
• Compressors appreciate reliable starting even with repeated start ups.
• Large machines gain a robust drive suitable for long duty cycles.
• Process lines use consistent behaviour under variable load.
• Operations with media pumping benefit from precise operation at higher working load.
• Air handling units gain a motor ready for long-term loading.
• Manufacturing equipment with lower speeds use a suitable compromise between power and economy.
• Operations with limited space value compact installation via the IEC frame 180 mm.
• Machine assemblies with an emphasis on diagnostics use 3 PTC thermistors as a protective element.
• Low voltage distribution systems benefit from connection options for both 400 V and 690 V.

Decision making is made easier by the combination of power, protection and operating reserve

If you are looking for a motor for stable operation with an emphasis on efficiency, mechanical durability and easy integration into existing technology, this model offers a practically balanced solution. It is suitable where long service life, sensible energy costs and certainty during continuous operation are important. If you need to verify suitability for a specific drive, request a quotation.