Pumpsets with centrifugal monoblocks are powered by AC induction two pole motors that are totally enclosed. Low wattage silicon steel laminations are installed under pressure in a rigidly locked frame to form a motor stator. Featuring enamelled copper wire that is varnish impregnated, the windings offer excellent resistance. High performance and low temperature rise result from the proper construction of motor frames and the use of quality materials, resulting in an extended motor life.