Manoj industries manufactures the dynaflux range of state-of-the-art dc drives and controls. The drives are offered in various mountings. Features of the dc drives include max/min speed overload protection, i.E., ir compensation and surge voltage suppression. These drives are compact, elegant, rugged and compatible with the range of pm dc motors, also manufactured by the company. Model spm - 1 specifications: base plate mounting type - module; supply - single phase, 220 v ac, for 1/2 hp to 3 hp for shunt/pmdc motors; remote on/off facility; isolated trip contacts; and available in size: [h] 230 mm [w] 180 mm [d] 90 mm.