| 摘要 |
PROBLEM TO BE SOLVED: To improve a breakdown voltage performance of a gas circuit breaker, and miniaturize the gas circuit breaker.SOLUTION: A gas circuit breaker according to an embodiment has a blocking unit and a resistor unit parallely connected to each other. The blocking unit comprises a first tubular insulation container, a first stationary side electrode rod, and a first movable side electrode rod. The resistor unit comprises a second tubular insulation container, a second stationary side electrode rod, a second movable side electrode rod, and plural resistor elements. The second movable side electrode rod moves forward and backward between a forward position at which it is in contact with the opposed second stationary side electrode rod in the second insulation container, and a backward position at which it is isolated from the electrode rod. An electrode interval between the second stationary side electrode rod and the second movable side electrode rod at the backward position is within 25% of axial length of the second insulation container with a center of an axial direction of the second insulation container as a reference position. |
