It is a sensitive swith tiny contact clearnce, instant action, and finny travel. It candrive the contrac rapidly and directly incertain travel with certain action force in order to switch over the circuit.

• 用一定的动作力通边一定的行程,使触点连动而进行电路转换的灵敏开关。具有微小触点间隙,瞬时动作和微小行程的特点。