FIELD: indication of state of automatic switches. SUBSTANCE: auxiliary unit is intended for side connected to unit of automatic switches for continuous test of condition of automatic switches or for detection of their malfunction in process of operation. Unit comes in the form of body whose one side carries basic part including auxiliary contacts controlled by mechanism of unit of automatic switches and whose other side carries connection part including joining lockpins for connection of auxiliary contacts to distribution board and recess for passage of tooth of comb providing for electric power supply of automatic switches. This connection part is so installed that it can be located on basic part in two various positions making it possible to place distribution comb either on side of line buses or on side of load of automatic switch. EFFECT: invention solves problem of standardization of unit for its connection on side of buses or on side of load. 8 cl, 8 dwg
