MS27706F, MILITARY STANDARD: RELAYS, ELECTROMAGNETIC, 20 AMPERES, 3 PST, MECHANICAL INTERLOCK, (CENTER OFF) LOAD, TRANSFER, TYPE I, HERMETICALLY SEALED (30 APR 1987)

MS27706F, MILITARY STANDARD: RELAYS, ELECTROMAGNETIC, 20 AMPERES, 3 PST, MECHANICAL INTERLOCK, (CENTER OFF) LOAD, TRANSFER, TYPE I, HERMETICALLY SEALED (30 APR 1987).