AC Reactor, also an inductor, is a kind of electrical component mainly used to maintain current at constant levels by resisting any changes in the current.
Reactors/indicators are passive electronic components that have the ability to store energy in a magnetic field created by the electric current passing through it. They are designed to control current and voltage over a given period of time. The voltage is controlled by altering the associated magnetic fields i.e. changing the magnetic field strength. Inductance, which is the inductor’s ability to store current, is measured in units called henries. The basic component of reactors or inductors is a coil of conducting material whose loops help create a strong magnetic field within the coil due to Faraday’s law of induction. The coil has the property of high inductance and low resistance and is often coiled around a core, made of a suitable material such as soft iron.