A switch , comprising: an actuator ; a conductor having a length extending between two ends and a width extending between two sides, the conductor having a connection contact at either end and at least one switching region disposed between the connection contacts, wherein each switching region extends between the two sides of the conductor and comprises: a hole through the conductor, at least one shearable portion bounded by the hole and a nearest of the two sides of the conductor, and an insert conductor inserted into the hole and in electrical contact with the conductor, via the hole, such that a current conduction path is defined along the length of the conductor via the insert conductor and the at least one shearable portion of each switching region; and a moveable member aligned with the at least one switching region and arranged to move in a first direction toward the at least one switching region upon actuation by the actuator, wherein, when the moveable member moves in the first direction, the moveable member is configured to at least partially displace the insert conductor from the hole with a first end portion of the moveable member and then shear the at least one shearable portion of the conductor with a respective second end portion of the moveable member in order to break the current conduction path, wherein the first end portion extends further in the first direction than the respective second end portion. an actuator ; a conductor having a length extending between two ends and a width extending between two sides, the conductor having a connection contact at either end and at least one switching region disposed between the connection contacts, wherein each switching region extends between the two sides of the conductor and comprises: a hole through the conductor, at least one shearable portion bounded by the hole and a nearest of the two sides of the conductor, and an insert conductor inserted into the hole and in electrical contact with the conductor, via the hole, such that a current conduction path is defined along the length of the conductor via the insert conductor and the at least one shearable portion of each switching region; and a hole through the conductor, at least one shearable portion bounded by the hole and a nearest of the two sides of the conductor, and an insert conductor inserted into the hole and in electrical contact with the conductor, via the hole, such that a current conduction path is defined along the length of the conductor via the insert conductor and the at least one shearable portion of each switching region; and a moveable member aligned with the at least one switching region and arranged to move in a first direction toward the at least one switching region upon actuation by the actuator, wherein, when the moveable member moves in the first direction, the moveable member is configured to at least partially displace the insert conductor from the hole with a first end portion of the moveable member and then shear the at least one shearable portion of the conductor with a respective second end portion of the moveable member in order to break the current conduction path, wherein the first end portion extends further in the first direction than the respective second end portion. <EOS>