Found this component in Canon printer power supply 
It follows a protective varistor in series and is followed by a some kind of serivse terminal that had its own hole in the power supply's case, and is connected to nothing. The component is close to to the AC input on the board, and has AR1 printed next to it 
It appears to have infinite resistance and no capacity. It has triangle-inside-circle-symbol:
folloed by 202 followed by T02E printed on it. Google search gave me nothing.