Category
page 1NEMA standards

contactor
thumb|Tesys D Schneider Electric Contactor
A contactor is a type of relay (electrically operated switch) with high power rating (current rating and voltage rating). Contactors usually refer to devices switching more than 15 amperes or in circuits rated more than a few kilowatts. Contactors are typically used to control electric motors (combination motor starters), lighting, heating, capacitor banks, thermal evaporators, and other electrical loads. The physical size of contactors ranges from a device small enough to pick up with one hand, to large devices approximately a meter on a side.
National Electrical Manufacturers Association
association of electrical equipment and medical imaging manufacturers in the United States
NEMA connector
type of power plugs standardized by the National Electrical Manufacturers Association
Insulation system
for wires used in generators, electric motors, transformers