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Same Day Shipment

Get our most requested products with our quickest turnaround time.


PF Guard Capacitor Bank

Avoid penalty fees and high utility bills with the PF Guard.


Spanish Web Site

The TCI web site is now available in Spanish.


HarmonicGuard Solution Center

The HarmonicGuard Solution Center features a dynamic analysis tool that uses your basic system data to generate accurate harmonic and power quality analysis for your unique application.


High Voltage Distortion

It is critical to select the right harmonic mitigation approach under harsh, high background voltage distortion conditions.


MotorShield Sinewave Filter

High performance Motor Protection Output Filter eliminates harmful dv/dt to result in a sinewave output.



PF Guard now available

Get more from your existing power system with PF Guard™ from TCI.

Same Day Shipment

Get our most requested products with our quickest turnaround.

MotorShield UL Listed

MotorShield is now UL and cUL Listed.

CEO Steve Copp to retire

Steve Copp, TCI's Chief Executive Officer, to retire effective June 30, 2015

MotorShield Sinewave Filter

TCI releases new Sinewave Output Filter and motor protection solution.

IEEE 519 updates and changes

TCI releases paper on key changes and differences between the new IEEE 519 2014 standard and IEEE 519 1992.


Harmonic Applications

High Frequency Noise Applications

Motor Protection Applications

TCI, LLC is the premier supplier of peripherals for AC and DC drives and a respected partner of drive manufacturers and distributors worldwide.  Our products include capacitor banksactive harmonic filters, passive harmonic filters, motor protection filters, line reactors, and other high quality products that increase the value and improve the overall system performance of power inverters.

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