Abstract: The present invention provides an electric circuit breaker device that can be downsized by reducing the distance the moving body moves.

Abstract: An electric circuit breaker, including a housing, a cut portion that is arranged in the housing and forms a part of an electric circuit, a cutting member that cuts the cut portion, and a power source arranged on a first end portion side of the housing, the electric circuit breaker including a moving body that allows the cut portion to be inserted and accommodated therein and includes the cutting member and a first arc extinguishing space adjacent to the cutting member, in which the housing includes a cylindrical portion capable of moving the moving body between the first end portion and a second end portion on a side opposite to the first end portion. The moving body is further configured such that the cutting member provided in the moving body cuts the cut portion while the moving body moves from the first end portion toward the second end portion by the power source.

Abstract: An electric circuit breaker that prevents damage due to increased internal pressure after an electric circuit is cut off and prevents an arc from leaking to the outside. Such a circuit breaker includes a housing, a cut portion that is arranged in the housing and forms a part of an electric circuit, a cutting member that cuts the cut portion, and a power source arranged on a first end portion side of the housing, the electric circuit breaker including a moving body including the cutting member, in which the housing includes a cylindrical portion capable of moving the moving body between the first end portion and a second end portion on a side opposite to the first end portion, in which the moving body is configured such that the cutting member provided in the moving body cuts a separation piece of the cut portion.

Abstract: An electric circuit breaker, including a housing, a cut portion that is arranged in the housing and forms a part of an electric circuit, a cutting member that cuts the cut portion, and a power source arranged on a first end portion side of the housing, the electric circuit breaker including a moving body that allows the cut portion to be inserted and accommodated therein and includes the cutting member and a first arc extinguishing space adjacent to the cutting member, in which the housing includes a cylindrical portion capable of moving the moving body between the first end portion and a second end portion on a side opposite to the first end portion. The moving body is further configured such that the cutting member provided in the moving body cuts the cut portion while the moving body moves from the first end portion toward the second end portion by the power source.

Abstract: An electric circuit breaker that prevents damage due to increased internal pressure after an electric circuit is cut off and prevents an arc from leaking to the outside. Such a circuit breaker includes a housing, a cut portion that is arranged in the housing and forms a part of an electric circuit, a cutting member that cuts the cut portion, and a power source arranged on a first end portion side of the housing, the electric circuit breaker including a moving body including the cutting member, in which the housing includes a cylindrical portion capable of moving the moving body between the first end portion and a second end portion on a side opposite to the first end portion, in which the moving body is configured such that the cutting member provided in the moving body cuts a separation piece of the cut portion.