Cooling body for electrical switch of e.g. grinder, has area resting and/or assigned to heat source, and another area turned to cooling agent, where material for former area has heat conductivity higher than material for latter area

摘要

The cooling body (9) has an area (11) resting and/or assigned to a heat source that is provided as warm-producing components (3, 7, 8), and another area (12) turned to a cooling agent, where the cooling body is made of metals. A material for the area (11) has a heat conductivity higher than the material for the area (12). Surface for the area (12) is larger than the surface for the area (11). The material for the area (11) concerns around copper, and the material for the area (12) concerns around aluminum.