BPC-10 circuit-breakers are designed to be used in indoor switchgears series KU10S of "ВС-РЗВА" production and switchgears of other manufacturers.
Circuit-breakers consist of the following parts: auxiliary position contacts of the circuit-breaker and flag indicator, switching block, condenser discharging tumbler switch, control PCB, electromagnet, condenser, manually-operated switching-off device, meter, three poles, interlocking mechanism, shaft, frame and row of terminals.
Each circuit-breaker pole consists of an insulating tie-rode with a pressing spring mechanism, a flexible or sliding connection, upper and lower terminals, a vacuum interrupter and an insulating housing. Vacuum interrupters are filled with cast epoxy compound, which safely protects them from mechanical and electrical damage. The poles of circuit-breakers rated for 2500 A and 3150 A currents are fitted with a cooling radiator.