Circuit breaker for a high-voltage dc network, with forced oscillation of current

Circuit breaker apparatus for a high- or medium-voltage direct current network, the circuit breaker apparatus comprising:

• a branch with a mechanical circuit breaker inserted in the network line, and, connected in parallel therewith;
• firstly
• a lightning arrestor branch, and secondly a series connection of a first capacitor bank,
• a make switch;
• and
• an inductor, the make switch acting on the appearance of a fault current to discharge the capacitor bank through the inductor so as to create an oscillating current and produce a zero crossing in the current flowing in the mechanical circuit breaker branch, wherein the circuit breaker apparatus includes at least one resistive voltage divider connected to the network voltage and presenting a low voltage stage connected in parallel with the capacitor bank in order to charge the capacitor bank.