Electric motor 5,5 kW, 730 rpm, 400 V / 690 V, 4LC-160M2-8 LV

When selecting a drive for pumps, fans, compressors and other machines, it is worth choosing a solution that combines lower losses with reliable operation over long shifts. The 4LC-160M2-8 model with an output of 5.5 kW operates in the speed range of 700-750 rpm, and its IE4 efficiency helps reduce energy losses by approximately 15 % to 20 % compared with IE3 class, which is especially noticeable in frequent and continuous operation. This is a three-phase motor designed for users who expect stable starting, sensible noise levels and service-predictable behaviour in low-voltage systems.

Energy saving in long-term operation in the range of 700-750 rpm

In this speed range, the motor naturally fits drives where continuous performance is important, without unnecessary overheating and without excessive losses in both the copper and iron circuits. Super-premium efficiency is especially advantageous where the unit runs for long hours each day and where the difference in electricity consumption affects operating costs in a short time. The power factor of 0.72, efficiency of 88.3 % and rated speed of 730 rpm create a balanced operating profile for equipment with a constant load.

Cast-iron construction increases stability and durability

The all-cast-iron design with a frame size of 160 mm is intended for environments where the motor is expected to withstand vibration, mechanical stress and corrosion. The robust cast-iron construction helps maintain more accurate bearing seating and reduces the transmission of shocks into the drive system. The rotor inertia of 0.1 kg*m² supports smooth operation and operational confidence in applications with frequent loading.

Electrical parameters for low-voltage industrial use

When supplied at 400 V, the motor has a rated current of 12 A, and when connected in Y at 690 V, the rated current is 6.96 A. The starting current Ist/In reaches 8.1, the starting torque Tst/Tn is 1.8 and the breakdown torque Tmax/Tn is 2, so the drive allows for a technically correct start even in applications with higher inertia. Noise level of 68 dB(A) remains at a level suitable for industrial spaces where not only performance but also running smoothness is assessed.

Components for reliable operation

The motor is equipped with DE 6309-2RZC3 and NDE 6309-2RZC3 bearings, which supports stability under continuous load. The 2-M40X1.5 cable glands make practical connection easier in switchboard and machine assemblies, and 3 PTC thermistors provide a protective element for monitoring winding temperature. The packing weight of 138 kg and packing dimensions of 700*420*550 mm are important when planning handling, installation and storage.

Use in manufacturing and operational units

The motor is suitable for pump sets with constant or slightly variable resistance, for axial and radial fans, compressor stations, mixers, conveyors and other large machines with a stable operating curve. It is characterised by parameters that are favourable for operations requiring long service life, service availability and technical advice when selecting accessories and the connection method. Thanks to its own research and development, VYBO Electric can recommend a suitable solution for the specific load, working environment and starting mode.

• Pumps benefit from stable 730 rpm during long-term liquid transfer.
• Fans benefit from a balanced ratio of output and efficiency in continuous operation.
• Compressors appreciate a starting torque of 1.8 when starting into load.
• Conveyors operate reliably thanks to the 160 mm frame construction.
• Mixers gain dependable operation under higher mechanical resistance.
• Dryers use consistent performance at a stable speed.
• Production lines benefit from low-voltage supply of 400/690 V.
• Machine units reduce the risk of vibration thanks to the robust cast-iron construction.
• Technologies with higher inertia use the rotor inertia of 0.1 kg*m².
• Operations with temperature monitoring appreciate 3 PTC thermistors as a protective element.
• Industrial pump stations operate with a current of 12 A at 400 V.
• Ventilation equipment in energy applications uses an efficiency of 88.3 %.
• Technological units with higher acoustic sensitivity benefit from a level of 68 dB(A).
• Service teams use 6309-2RZC3 bearings on both sides for predictable maintenance.

If you need a drive for a pump, fan, compressor or another industrial unit, this model offers a reliable basis for long-term operation and reasonable energy costs. Check the suitability of the motor for your application and compare the connection, load and cooling method with the requirements of your technology.