GAS-BLAST CIRCUIT BREAKER

摘要

PROBLEM TO BE SOLVED: To provide a gas-blast circuit breaker which detects that an erroneous of gas leak alarm sort is jointed with a gas-blast circuit breaker. SOLUTION: The sort of a gas-leak-alarm 2 is decided with based on a driving alarm outputted from an alarm connection detection intermittent driving mean 19 and an alarm signal intermittent driving mean. When this is different from that primarily connected, gas is shut off or it is informed.