Electrical surge arresters; Change-over switches; Electrical components in the nature of electric contactors; Medium voltage power distribution and protection component system composed of breakers and switchgears; Automatic transfer switches (ATS); Circuit breakers; Remote circuit breaker control switch operators; Switch boxes; Surge protectors; Circuit breakers and circuit closers; Voltage surge protectors; Electricity meters; Footswitches for electric guitar amplifiers; Automatic transfer s...