Arrester, surge arrester.
1) An electrical appliance used to protect electrical equipment from high transient overvoltage hazards and to limit the freewheeling time and often also limit the freewheeling amplitude. this term includes any external clearance necessary for the proper functioning of the appliance when installed, whether or not it is a part of the whole.
Note 1: the arrester is usually connected between the grid conductor and the ground wire, but sometimes it is also connected beside the winding of the appliance or between the conductors.
Note 2: Surge arresters are sometimes also called surge protectors, surge dividers.
Excerpted from: "Electrical Terminology - Lightning Arrester, Low Voltage Surge Protector and Components", GB/T 2900.12-2008.
2) Lightning arrester is another important device that is often used in communication cables to prevent lightning damage. The following introduces the relevant knowledge of the arrester.