Network choke (inlet) 4%, 3-phase for power up to 160 kW INS 3-325-400

Network choke – power protection and stabilization

A network choke (input) is a key element of an electrical installation, providing protection against overvoltages and harmonics, as well as voltage stabilization. The INS 3-325-400 model, designed for operation in 3-phase systems with a power of up to 160 kW, effectively limits surge currents generated during device switching, minimizing the risk of damage and disruptions in network operation. This solution is used both in newly built installations and in modernized industrial and commercial facilities.

Design and application

The INS 3-325-400 choke is characterized by high interference suppression efficiency thanks to the use of a core made of high-quality materials. Its design based on an inductive coil allows for limiting short-circuit and harmonic currents, which translates into a longer service life of connected devices and improved reliability of the entire system. This is particularly important in the case of loads with high power consumption, such as electric motors, transformers or impulse power supplies.

Network chokes are widely used in:

• Industrial buildings: protection of machines and production equipment against power supply disturbances.
• Data centers: ensuring a stable power supply for sensitive servers and IT equipment.
• Commercial buildings: protection of lighting systems, air conditioning and other electrical installations.
• Photovoltaic installations: reduction of harmonics generated by inverters.
• Wind power plants: suppression of disturbances related to generator operation.

Key product features

This choke stands out from the competition primarily due to its efficiency – designed to operate at a current of 325A, it provides effective protection even in demanding conditions. The weight of the device is 44.5 kg, which testifies to the solid workmanship and materials used. The core dimensions (140 x 224 x 112 mm) allow for easy mounting in standard electrical switchboards. Thanks to this, installers can quickly and efficiently integrate the choke with the existing infrastructure without the need for costly modifications. It is also worth paying attention to the C characteristic, which allows it to react more slowly to short current surges, therefore it tolerates starting devices with a motor well.