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Transient voltages on the AC power lines can cause inrush currents to a VFD drive, resulting in an overvoltage condition of the DC bus. These transient voltage conditions are often caused by utility capacitor switching and will cause VFDs to shut down without warning. The addition of a KLR line reactor will limit the magnitude of inrush current, preventing trips and component failures.

TCI Trans-Coil KLR Series DIN Rail Line Reactors Distributors

KLR Series

Installation Guide

The addition of a KLR will reduce input line distortion which is caused by the non-linear characteristics of drives. The KLR will limit the inrush current to the rectifier, rounding the waveform, reducing the peak currents and lowering the harmonic current distortion.

High peak currents may cause distortion of the voltage waveform. The reduction of those peak currents also reduces total harmonic voltage distortion at the point of common coupling.

Drive input currents rich in harmonics result in a decrease in total input power factor to the drive. The addition of a KLR will reduce the RMS current through the reduction in harmonic content, thereby improving the total power factor.

If you are looking for TCI KLR Series DIN Rail Line Reactors, please call us on (800) 894 - 0412 or email us at we will do our best to help you find the TRANS-COIL KLR line reactor that you are looking for at the most competitive prices possible. If you are searching for TCI DIN rail line reactor technical information (data-sheets) please use the datasheets or product selection guide page links.


  • Reduce Voltage Notching
  • Prevent Drive Shutdown
  • Reduce Harmonic Distortion
  • Improve phase to phase voltage imbalance
  • Improve True Power Factor
  • Prevent Overcurrent Trips
  • Protect Components from Damage
  • Distributed Gap Technology for efficient operation
  • RoHS compliant

TCI is proud to announce the release of the new Universal Mounting footprint design.

From patented bobbin construction to Distributed Gap Technology, TCI has been the leader in the manufacture of three phase reactors. Over time, the marketplace has expanded and more manufacturers have introduced their own reactor lines. This can become a big challenge for large distributors, systems integrators, and drive manufacturers who have pre-drilled back panels or customers with pre-drilled back panels. In order to change reactor suppliers, drawings have to be changed, and panel mounting dimensions would have to be modified.

The evolution of TCI three phase reactors has just taken another step forward. In order to help our customers, TCI has modified both the KLR and KDR product lines. A new Universal Mounting foot design is being introduced. Each and every reactor will now be built using the new mounting design.

Our industrial factory automation supplies distributor warehouse in Boise, Idaho stocks some TRANS-COIL Inc. products enabling us to further assist you in finding the correct three-phase line reactor in the USA. Whether we have KLR series reactor in stock in Boise, Idaho USA or need to ship direct from TCI to any USA cities; Clearwater Tech can get 3-phase line reactors to you fast and save you some money! It will be very helpful if you have the DIN rail mounted reactor part numbers ready, then our sales representatives can provide you with a pricing and availability quote for TRANS COIL KLR series reactors that you are looking for in seconds. If you do not have the part numbers for TCI KLR series three phase reactors, our application engineers will be able to help you figure out the part numbers and get the price quote to you as soon as possible.

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SolaHD Filters

The DIN Rail Mounted STFE Elite series combines active tracking technology with UL listed surge protection to protect against the full spectrum of voltage transients and surges. These devices protect your equipment by continuously tracking input AC power and responding instantly to high voltage transients and high frequency noise caused by everyday events such as turning on machinery, motors, or equipment.

Hammond Outlet Strip

The 3-Prong "Grounded" Plugs are strongly recommended by Hammond to be used with all of our products. They should be used only with our "grounded" adaptors. Adaptors do not affect voltages, they are a mechanical device only to match foreign "pin-outs" of receptacles and/or plugs. "Auto" transformers are non-isolating units and should be used where only a voltage change is required. The advantages to using them