Two terminal type for bipolar protection between two points, e.g. plus to minus, or plus to ground, or minus to ground. Enclosure painted steel, mounting centers (4 holes) 5” X 1 1/8”. Housing 4 1/2” X 2 7/8” X 2 5/8” H.

For use on series or T connection, unlimited load current. Bipolar operation, either polarity of surge equally clamped. 2 wire standard AAR terminal block provided. Steel (painted) enclosure 4.50" X 2.88" X 2.62" H. Response one nanosecond, no follow current, self restoring instantly when voltage returns to normal.