DC RELAY

摘要

A dc relay comprising a plurality of contact pairs and a plurality of magnets (5), the plurality of contact pairs respectively being constituted such that contacts (21, 22, 31) having contact contacting portions (21a, 22a, 31a) are disposed to be openable/closable to each other, characterized in that the plurality of magnets (5) are disposed on one straight line, the plurality of contact pairs are disposed so that contact pairs are positioned between magnets (5) on the same line as the straight line, and the plurality of magnets (5) are respectively provided so that arcs produced between contacts (21, 22, 23, 31) when the relay is opened are distorted in a direction crossing the line, whereby arcs can be extinguished in a short time without interfering with each other even at reverse current running. Accordingly, the dc relay requires a minimum possible number of magnets and can be downsized with simple structure, thereby enabling a dc high voltage to be cut off in a short time even at reverse current running.