Legacy Products

TCI continues to find improvements and efficiencies in the products we manufacture. Some of our products may have been updated or replaced with products that are currently listed in our Products section. However, we will continue to support and answer questions on the Legacy products we have listed below.


The HG7 Harmonic Filter limits harmonics to 7% Distortion (typical results of 5 – 6% TDD).

KDR Line Reactor

UL Listed Optimized Line Reactors