Spradecom Electro Controls Ltd. Manufactures Modular Thyristor Controlled DC Drive. Spradecom Electro Controls Ltd also offers drives, gauge masters, indicators, sensors, temperature controllers etc.Modular Thyristor Controlled DC Drive is used for variable speed regulation of a DC motor. The Modular Thyristor Controlled DC Drive is available from 0.5 KW to 150 KW in three different sizes and voltage ranges. The drive is single phase half / full controlled modules, [four quadrants] and three phase solid state fully controlled six Thyristor modules in a compact panel mounting construction. The Modular Thyristor Controlled DC Drive has necessary protection annunciated through miniature LED indications with a facility to connect a fault indicator.