High voltage direct current relay facing arc isolation device

摘要

A movable contact member including a movable plate spring (1) and left movable contacts (2) and right movable contacts (3) fixed to the left and right ends of the movable plate spring (1); A fixed contact member comprising a corresponding left fixed contact (4) and a right fixed contact (5) corresponding to the right movable contact (3), between the left fixed contact (4) and the right fixed contact (5) An arc isolation element (8) made of an insulating material is installed, and the dimension L in the front-rear direction of the arc isolation element (8) is larger than the width M in the front and back of the joint surface of the movable contact and the fixed contact, A high voltage DC relay counter arc isolation device characterized in that the isolation element (8) has a height H capable of isolating an opposite arc between two pairs of movable contacts and a fixed contact. [Selected figure] Figure 1