Arc Chute:

Link: https://www.electricalclassroom.com/what-is-an-arc-chute/

Arc chute is a set of metal plates that are arranged in parallel and mutually insulated from each other, which can divide, cool and safely extinguish an electric arc. They are also known as arc splitters and arc dividers. Arc chutes can be found inside circuit breakers, contactors, isolators and other high current interruption devices.