Yesdee electronics have developed aluminium housed encased metal clad resistors which are used with ac drives in elevators, cranes, controllers, hoist, for automation applications, and wherever high wattage is required in a small space. They are chassis mounted, compact and are encased in high quality heat sink and are encased resistors which are provided from 80 to 2000 w and ohmic range from 0.Io to 15 ko in a single module. Higher wattages are also available in the form of load banks. Horizontal as well as vertical mountings are available, as also inductive and non-inductive types.