Three-phase electric motor: 3LC-225S-4, 37 kW
| Basic technical data | |
| Motor type | 3LC-225S-4 |
| Rated power (kW) | 37 |
| Frame size (mm) | 225 |
| Number of poles | 4 |
| Rated speed (rpm) | 1485 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | △/Y |
| Rated current 400 V (A) | 66,1 |
| Rated current 690 V (A) | 38,32 |
| Efficiency at 100% load (%) | 93,9 |
| Efficiency class | IE3 |
| Power factor at 100% load | 0,86 |
| Starting and torque characteristics | |
| Locked-rotor torque ratio (LRT/RLT) | 2 |
| Breakdown torque ratio (BDT/RLT) | 2,3 |
| Locked-rotor current ratio (LRA/RLA) | 7,4 |
| Rotor moment of inertia (kg·m²) | 0,5224 |
| Applicable standards | |
| Specification | IEC60034-1 |
| Testing | IEC60034-2 |
| Noise | IEC60034-9 |
| Vibration | IEC60034-14 |
| Construction and operating data | |
| Mounting arrangement | IM B3, B5, B35, V1 |
| Duty type | S1 (S2, S3, S4 – S9 optional) |
| Load type | Parabolic or linear curve |
| Degree of protection | IP55 |
| Insulation class | F |
| Temperature rise class | B |
| Cooling method | IC411 |
| Starting method | DOL, VFD, soft starter |
| Direction of rotation | Both |
| Vibration (mm/s) | 2.8 |
| Cable glands | 2-M50X1.5 |
| Operating conditions | |
| Ambient temperature range | -20 to +40°C (-30, +50, +60 optionally) |
| Maximum installation altitude | up to 1000m |
| Packaging and dimensions | |
| Packaging dimensions (mm) | 942*542*596 |
| Package weight (kg) | 329 |
| Bearings and lubrication | |
| DE/NDE bearings | 6313-C3/6313-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
The 4-pole electric motor 3LC-225S-4 delivers an ideal balance between purchase price and energy savings, which proves valuable in both continuous and intermittent operation. The 3LC-225S-4 model with a power output of 37 kW is suitable for light and medium industry, where smooth starting, stable speed and reasonable operating costs are expected from the drive. In drives for technological assemblies, OEM machines and smaller units, this electric motor helps keep production moving without unnecessary intervention in line settings.
IE3 efficiency class supports lower consumption under normal load and helps reduce energy losses wherever the motor runs for long shifts. In applications with frequent loading and long running times, this difference is reflected in the operating budget even during a normal season. The manufacturer, with years of experience in drive technology, has chosen a solution that meets the demands of modern production lines without unnecessarily complicating machine integration.
The 225 mm frame size provides sufficient space for robust installation while simplifying integration into standard drive-technology assemblies. A rated speed of 1485 rpm is suitable for applications where a balanced relationship between torque and operating speed is important. This makes the asynchronous electric motor a proven choice for equipment that needs a reliable basis for everyday operation.
4-pole electric motor for smooth operation of production and technological units
A rated current of △ 400V 66.1 A and Y 690V 38.32 A gives designers flexibility when designing switchgear and selecting the starting method. A starting torque ratio of 2 supports starting that is suitable for equipment with uniform loads. A breakdown torque ratio of 2.3 helps in situations where the drive operates with changing resistance during use. A starting current ratio of 7.4 is important when coordinating protection and sizing the power supply.
Another practical advantage in this class is that the motor can build on proven solutions in systems where easy maintenance and long service intervals are priorities. For smaller technological units, it is crucial that the motor maintains stable performance through repeated cycles without requiring complex operation. This is exactly why a 4-pole electric motor is often used in lines where every hour of downtime matters.
Robust cast-iron frame handles the demands of everyday operation
The design with reinforced cast-iron bearing shields and reinforced cast-iron feet increases durability during installation and long-term operation. This solution is appreciated in facilities where the machine is repeatedly started, exposed to vibration or operates in technological areas with higher mechanical loads. A noise level of 78 dB(A) helps keep the working environment acceptable even when several drives operate in one hall.
Rotor inertia of 0.522 kg/m² contributes to predictable drive behaviour during starting and changes in load. For designers of smaller lines, it is important that the motor can be integrated into the system without unnecessary compromises in the mechanical design. Cable glands 2-M50X1.5 simplify wiring in assemblies with limited installation space.
Dimensions and installation that save time during integration
Package dimensions of 942*542*596 mm and a packaged weight of 329 kg simplify planning for receiving, handling and installation in the workshop or production facility. The DE bearing 6313-C3 and NDE bearing 6313-C3 support operation in applications where long-term bearing stability is expected. Service teams also benefit from an assembly that remains clear and accessible for maintenance.
In typical applications, this motor is suitable for assemblies that require uniform torque and reliable operation without excessive intervention in the production process. Straightforward installation and robust mechanics are particularly advantageous in serial OEM machines where repeatability of the solution is important. At drive-technology level, this creates a solid foundation for trouble-free integration.
14 applications for light and medium industry
This electric motor is suitable for equipment that requires stable performance and long operating periods.
- Pumping stations for industrial water circulation.
- Ventilation units for production halls.
- Centrifugal compressors in smaller technological units.
- Belt conveyors in packaging lines.
- Agitators for chemical dosing systems.
- Screw conveyors for bulk-material processing.
- Crushers in recycling operations.
- Briquetting presses for wood waste.
- Granulation lines for plastic regranulate.
- Rotary feeders in food-processing technologies.
- Industrial mixers for construction compounds.
- Vacuum pumps in packaging processes.
- Pressing units in assembly fixtures.
- Smaller machining centres with continuous spindle operation.
Why it suits OEM machines
OEM manufacturers particularly value the ability to use the motor as a reliable basis for repeatable series solutions. The combination of efficiency, robust construction and practical installation details reduces the risk of modifications during integration. In practice, this means less time spent tuning the drive and more time focused on the machine’s actual function.
The 3LC-225S-4 model is ready to support operations where the motor is expected to run for the long term without unnecessary compromises. If you want to move your line toward lower consumption and more stable operation, take advantage of the offer and choose a solution built for practical industrial use.