MIL MIL-R-83726/19E

RELAYS, HYBRID, TIME DELAY (ON OPERATE), TRACK MOUNTED, TYPE I, CLASS B, 10 AMPERES, 2PDT, HERMETICALLY SEALED, FIXED TIME, 0.1 TO 300 SECONDS (S/S BY MIL-R-83726/19F)
standard by Military Specifications and Standards, 08/09/1991