Motor starter (3-phase) 100 kW INM 3-200-400

Motor chokes INM – protection and stable motor operation

INM motor chokes are components dedicated to limiting overvoltages and harmonics in the power supply circuits of three-phase motors. Using a choke improves power quality, reduces electromagnetic interference, and increases the lifespan of connected devices. The INM 3-200-400 model, with a power of 100 kW, is particularly useful in industrial applications requiring stable and reliable power supply.

Construction and application

The INM 3-200-400 choke is designed to work with motors up to 100 kW. Made of high-quality materials, it provides effective protection against overvoltages and harmonics that can negatively affect the operation of the motor and controllers. The construction based on a copper (Cu) winding and vacuum impregnation in class H varnish guarantees high resistance to environmental conditions and long-term reliability. This choke finds application in various industrial installations, such as:

• Pump and fan drive systems
• Production machines
• Compressors
• Lifting equipment
• HVAC installations

Key features and benefits

• High harmonic suppression efficiency: Reducing disturbances in the power supply network translates into more stable motor operation and reduced energy losses.
• Overvoltage protection: Protects the motor and connected devices from damage caused by sudden voltage increases.
• Durable construction: Copper winding and class H varnish impregnation ensure resistance to high temperatures (up to 155°C) and long-term operation.
• Wide range of rated voltages: Choke adapted to operate in 3x400V networks.
• Mounting: Possibility of mounting with angle brackets, which facilitates integration with existing infrastructure.
• Compliance with standards: Meets the requirements of EN/IEC 61558-2-20 and EN/IEC 60076-6 standards, guaranteeing safety of use.
• Insulation class F: Ensures safe operation in elevated ambient temperatures (up to 40°C).

Thanks to the use of the INM 3-200-400 choke, installers can provide customers with reliable and safe motor power supply systems, and end-users – trouble-free operation of machines and equipment.