In some embodiments, a method is provided that includes (1) providing aluminum; (2) providing carbon nanotube material; (3) combining the aluminum and carbon nanotube material to form a current-carrying, aluminum-carbon-nanotube component of an electrical switch device; and (4) assembling the electrical switch device using the aluminum-carbon-nanotube component. The aluminum-carbon-nanotube component is formed so as to have at least one of lower electrical resistivity and greater thermal conductivity than a component formed of aluminum without carbon nanotube material. Numerous other embodiments are provided.