FIELD: electrical engineering.
SUBSTANCE: discharger protective elements are arranged in structural unit with optical indication of faults and thermal device 5 of maximum current protection. Said thermal device comprises mechanical actuator to make fault signal transmission contact operate and pushrod 1 that moves rectilinear across discharger plug-in direction. Pushrod 1has elastic lug 2 with its free end can be locked by locking element 4. Thermal device 5 of maximum current protection comprises actuator pin 6 to act on free end of lug 2 to unlock pushrod 1. Said pushrod 1 comprises free section 7 representing jumper to pass through appropriate opening in discharger casing 9. Structural element 16 to accommodate mechanically or electrically at least one plug-in discharger incorporates switch 21 intended for no-potential transfer of messages about fault conditions, particularly by means of micro switch 21.
EFFECT: ruling out fault operation of micro switches.
16 cl, 11 dwg
