Insulating material for electric apparatus and electric apparatus using same

The present invention provides an insulating material for electric apparatuses containing an insulating resin, an organic nanoelastomer p article, and an inorganic nanoparticle, the organic nanoelastomer parti cle and the inorganic nanoparticle being dispersed in the insulating resin, including a portion in which the two particles are alternately arranged, and h aving a particle diameter from at least 1 nm to less than 100 nm. These properties make it possible to improve both the breakdown field and the fracture toughness of the insulating material for electric apparatuses.