SEALED RELAY DEVICE

摘要

A sealed relay (1) of the high-vacuum type, or which may be backfilled with a dielectric gas such as hydrogen-nitrogen mixture for improved arc suppression when switching high-voltage DC currents. The relay (1) uses controlled fixed contacts (22) which enable use of a reduced diameter disk-shaped movable contact (21), thus permitting optimal placement of external arc-supporting permanent magnets (30) on a ceramic relay housing (3) in close proximity to the enclosed fixed and movable contacts (21, 22). A staggered or offset position of the fixed contacts (22) makes the relay polarity insensitive for bidirectional switching of high-voltage DC currents.