(Currently Amended) A switch comprising: a first contact placed to be able to reciprocate in a first direction along an operating shaft and in a second direction opposite to the first direction; a second contact placed on a side of the first direction with respect to the first contact to be able to reciprocate in the first direction and the second direction along the operating shaft; a housing box to include inside a housing space housing one end of the second contact on the side of the first direction, to form an opening through which the second contact can pass, and to allow another end of the second contact opposite to the one end to be exposed to the outside of the housing space through the opening; a surrounding portion erected in the second direction from the opening of the housing box and surrounding a side surface of the second contact; a partition to be formed integrally with a part of the second contact housed in the housing space and to partition the housing space into a first space on the side of the first direction and a second space on a side of the second direction; and an energizing portion to energize the second contact in the first direction, characterised by a slide contact placed between the second contact and the surrounding portion and in contact with the second contact and the surrounding portion; wherein the first contact, the second contact, the housing box, the surrounding portion, and the slide contact are each formed of a conductor, the partition is formed of an insulator, the first contact includes a first abutting portion to be able to come into contact with the side surface of the second contact, a second abutting portion formed on the side of the first direction with respect to the first abutting portion to be able to come into contact with an outer surface of the surrounding portion, and an arc generator placed on the side of the first direction with respect to the first abutting portion to generate an arc between the second contact and the arc generator, a facing portion that faces the one end of the second contact is formed on a part of an inner wall surface forming the first space of the housing space, and an insulating guide made of an insulator is placed in a part of the side surface of the second contact, the part coming into contact with the slide contact in a state in which the second contact is disposed on the side of the first direction by energizing force of the energizing portion. a first contact placed to be able to reciprocate in a first direction along an operating shaft and in a second direction opposite to the first direction; a second contact placed on a side of the first direction with respect to the first contact to be able to reciprocate in the first direction and the second direction along the operating shaft; a housing box to include inside a housing space housing one end of the second contact on the side of the first direction, to form an opening through which the second contact can pass, and to allow another end of the second contact opposite to the one end to be exposed to the outside of the housing space through the opening; a surrounding portion erected in the second direction from the opening of the housing box and surrounding a side surface of the second contact; a partition to be formed integrally with a part of the second contact housed in the housing space and to partition the housing space into a first space on the side of the first direction and a second space on a side of the second direction; and an energizing portion to energize the second contact in the first direction, characterised by a slide contact placed between the second contact and the surrounding portion and in contact with the second contact and the surrounding portion; wherein the first contact, the second contact, the housing box, the surrounding portion, and the slide contact are each formed of a conductor, the partition is formed of an insulator, the first contact includes a first abutting portion to be able to come into contact with the side surface of the second contact, a second abutting portion formed on the side of the first direction with respect to the first abutting portion to be able to come into contact with an outer surface of the surrounding portion, and an arc generator placed on the side of the first direction with respect to the first abutting portion to generate an arc between the second contact and the arc generator, a facing portion that faces the one end of the second contact is formed on a part of an inner wall surface forming the first space of the housing space, and an insulating guide made of an insulator is placed in a part of the side surface of the second contact, the part coming into contact with the slide contact in a state in which the second contact is disposed on the side of the first direction by energizing force of the energizing portion.