Abstract: A rotation mechanism for a rotary switch and a method of operating a rotary switch are provided. The rotation mechanism includes a mechanism shaft for switching the switch between open and closed positions of the switch, a crank rotationally connected to the mechanism shaft, a spring connected to the crank, where the spring has a dead point between the open and closed positions of the switch, and a force transmission roll rotationally connected to the crank. The mechanism shaft, crank and force transmission roll have a common axis of rotation. There is a predetermined rotational free-play between the rotation of the mechanism shaft and the crank, and a predetermined rotational free-play between the rotation of the crank and the force transmission roll.

Abstract: A roll for rotating a movable contact of a rotary switch, and a method of mounting a switch are provided. The roll includes a first slot going along the diameter of the roll and open from the top of the roll for receiving the movable contact for contacting with a stationary contact of the rotary switch, and a second slot arranged perpendicular to the first slot for receiving teeth of an upper roll to be mounted together with the roll.

Abstract: A movable contact for a rotary switch is provided. The movable contact includes first and second contacts for contacting a stationary contact, where the first and second contacts are arranged at a distance from each other for receiving the stationary contact between the first and second contacts. The first contact is a straight contact blade for contacting stationary contacts at both ends of the blade. The second contact is a spring element configured to bend when the stationary contact is placed between the first contact and the second contact, and to cause a pressing force to the stationary contact to press the stationary contact against the first contact after the stationary contact has been placed between the first contact and the second contact.

Abstract: A movable contact of a rotary switch, including a pair of contact blades for making an electrical contact to a stationary contact receivable between the contact blades. The movable contact includes a traction member for providing a traction force between the contact blades, wherein the traction member is a unitary piece including two frame portions for framing the pair of contact blades, the traction member including a spring portion for pressing one of the contact blades against the other contact blade, wherein the spring portion is arranged between the two frame portions arranged at a distance from each other.

Abstract: A rotation mechanism for a rotary switch and a method of operating a rotary switch are provided. The rotation mechanism includes a mechanism shaft for switching the switch between open and closed positions of the switch, a crank rotationally connected to the mechanism shaft, a spring connected to the crank, where the spring has a dead point between the open and closed positions of the switch, and a force transmission roll rotationally connected to the crank. The mechanism shaft, crank and force transmission roll have a common axis of rotation. There is a predetermined rotational free-play between the rotation of the mechanism shaft and the crank, and a predetermined rotational free-play between the rotation of the crank and the force transmission roll.

Abstract: A movable contact for a rotary switch is provided. The movable contact includes first and second contacts for contacting a stationary contact, where the first and second contacts are arranged at a distance from each other for receiving the stationary contact between the first and second contacts. The first contact is a straight contact blade for contacting stationary contacts at both ends of the blade. The second contact is a spring element configured to bend when the stationary contact is placed between the first contact and the second contact, and to cause a pressing force to the stationary contact to press the stationary contact against the first contact after the stationary contact has been placed between the first contact and the second contact.

Abstract: A stationary contact for a rotary switch is provided. The stationary contact includes a connection portion for connecting to a conductor and a first portion being a contact portion for connecting the stationary contact to a rotary contact. The stationary contact also includes a second portion being a support portion for supporting the stationary contact to a switch body. The contact portion and support portion extend in the same angle from the connection portion. A method of mounting a rotary switch is also provided.

Abstract: A roll for rotating a movable contact of a rotary switch, and a method of mounting a switch are provided. The roll includes a first slot going along the diameter of the roll and open from the top of the roll for receiving the movable contact for contacting with a stationary contact of the rotary switch, and a second slot arranged perpendicular to the first slot for receiving teeth of an upper roll to be mounted together with the roll.

Abstract: A tripping assembly is provided for a switching device. The tripping assembly includes: a body part, a tripping axle configured to turn between a trip position and a tensioned position in relation to the body part; a tripping frame configured to turn between a trip position and a tensioned position in relation to the body part and whose turning axis is substantially parallel with the turning axis of the tripping axle; at least one tripping spring which has an non-tensioned state and a tensioned state and which is functionally connected to the tripping axle and to the tripping frame; a frame spring which has a non-tensioned state and a tensioned state and which is functionally connected between the body part and the tripping frame; and a connecting member which is arranged to functionally connect the tripping axle and the tripping frame both in the final stage of a tensioning event and in the initial stage of a tripping event.

Abstract: Exemplary embodiments are directed to a controller unit for a switching device. The controller unit includes a body part and an operating axle. The operating axle is connected to contacts of the switching device to adjust a respective state of the contacts between a closed position and an open position. A control axle includes a first axle part and a second axle part, the first axle part is arranged to be turned by a user, and the second axle part is functionally connected to the operating axle to turn it between the open position and the closed position. A tripping assembly is functionally connected to the operating axle to turn the operating axle from the closed position to the open position. The controller unit also includes connecting means for functionally connecting a first axle part to one of a tripping assembly and a second axle part.

Abstract: Exemplary embodiments are directed to a controller unit for a switching device. The controller unit includes a body part and an operating axle, which is turnable between a closed position and an open position in relation to the body part and is functionally connectable to contacts of the switching device to change respective states of the contacts between the closed position and the open position. The controller also includes a control axle that is turned by a user between an off-position and an on-position in relation to the body part and is functionally connected to turn the operating axle. A tripping assembly is functionally connected to the operating axle such that the tripping event of the tripping assembly turns the operating axle from the closed position to the open position. Connecting means selectably connect the control axle to the tripping assembly.

Abstract: A tripping assembly is provided for a switching device. The tripping assembly includes: a body part, a tripping axle configured to turn between a trip position and a tensioned position in relation to the body part; a tripping frame configured to turn between a trip position and a tensioned position in relation to the body part and whose turning axis is substantially parallel with the turning axis of the tripping axle; at least one tripping spring which has an non-tensioned state and a tensioned state and which is functionally connected to the tripping axle and to the tripping frame; a frame spring which has a non-tensioned state and a tensioned state and which is functionally connected between the body part and the tripping frame; and a connecting member which is arranged to functionally connect the tripping axle and the tripping frame both in the final stage of a tensioning event and in the initial stage of a tripping event.

Abstract: Exemplary embodiments are directed to a controller unit for a switching device. The controller unit includes a body part and an operating axle, which is turnable between a closed position and an open position in relation to the body part and is functionally connectable to contacts of the switching device to change respective states of the contacts between the closed position and the open position. The controller also includes a control axle that is turned by a user between an off-position and an on-position in relation to the body part and is functionally connected to turn the operating axle. A tripping assembly is functionally connected to the operating axle such that the tripping event of the tripping assembly turns the operating axle from the closed position to the open position. Connecting means selectably connect the control axle to the tripping assembly.

Abstract: Exemplary embodiments are directed to a controller unit for a switching device. The controller unit includes a body part and an operating axle. The operating axle is connected to contacts of the switching device to adjust a respective state of the contacts between a closed position and an open position. A control axle includes a first axle part and a second axle part, the first axle part is arranged to be turned by a user, and the second axle part is functionally connected to the operating axle to turn it between the open position and the closed position. A tripping assembly is functionally connected to the operating axle to turn the operating axle from the closed position to the open position. The controller unit also includes connecting means for functionally connecting a first axle part to one of a tripping assembly and a second axle part.

Abstract: A modular switching device is disclosed which includes a plurality of interconnected modules, the modules having a control device module and a pole cell module, the modules of the switching device being interconnected with a shaft adapted to transfer a torque required for operating the switching device from one module to another module. The modular switching device is configured such that each module has a shaft element, and the shaft transferring the torque is composed of directly interconnected shaft elements.

Abstract: A switching device is disclosed which includes a neutral conductor and arranged for opening and closing an electric circuit. The switching device includes a frame, through which the electric circuit's neutral conductor having a first end and a second end passes. The neutral conductor includes a movable middle portion that is arranged for breaking the neutral conductor inside the frame, the movable middle portion being movable with respect to the first and the second end of the neutral conductor and located between them.

Abstract: A switching device module comprising a frame (2), the switching device module being adapted to be connected to another switching device module for providing a modular switching device. The frame (2) of the switching device module is provided with one or more wire troughs (8), each of which is adapted to receive at least one wire of an auxiliary circuit of said modular switching device.

Abstract: A switching device is disclosed which includes a working shaft and a control shaft installed in a frame part, the control shaft being rotatable and adapted to turn the working shaft, and the working shaft being adapted to change the position of poles of the switching device. One of the two shafts passes through the other.