A circuit board enclosure comprises a circuit breaker, platform, base, cover, and circuit board. The circuit breaker includes two conductors and a plate, which is connected to the conductors. The platform receives the circuit breaker. The base has a bottom member and an opening arranged in the bottom member. The base receives the platform with the circuit breaker such that the plate of the circuit breaker is accommodated substantially within the opening of the bottom member. The cover is configured to cover the base and form an interior space. The interior space accommodates the platform, the circuit breaker, and the circuit board. The circuit board is connected to the circuit breaker. The circuit board enclosure can be adhered to a substantially planar surface. The plate is configured such that removal of the circuit board enclosure from the substantially planar surface will damage the connection of the plate to the conductors.

A switch includes an actuator for moving the switch from an OFF position to an ON position. A resistor is connected in series between a first terminal and a second terminal, and limits inrush current that flows when the switch is moved from the OFF position to the ON position.

A switch includes connection elements, connectable via a switching contact whose movable contact area is formed on a movable contact element which bears against the stationary contact area in the closed position. In order to achieve a design with improved positional accuracy, an embodiment of the invention proposes that the two connection elements and the movable contact element each have a planar flat side and all flat sides lie in a common plane. In an embodiment, the connection elements are arranged on one side of the common plane and the movable contact element is arranged on the other side; a subarea of the flat side of one connection element forms the stationary contact area; a subarea of the flat side of the other connection element forms a planar bearing area; and the movable contact element with its flat side bears movably against the bearing area.

A switch includes connection elements, connectable via a switching contact whose movable contact area is formed on a movable contact element which bears against the stationary contact area in the closed position. In order to achieve a design with improved positional accuracy, an embodiment of the invention proposes that the two connection elements and the movable contact element each have a planar flat side and all flat sides lie in a common plane. In an embodiment, the connection elements are arranged on one side of the common plane and the movable contact element is arranged on the other side; a subarea of the flat side of one connection element forms the stationary contact area; a subarea of the flat side of the other connection element forms a planar bearing area; and the movable contact element with its flat side bears movably against the bearing area.

Contact unit for a tap changer including a contact ring having a central axis, a plurality of fixed contacts arranged at a distance from the contact ring in different radial directions, and a moving contact arranged rotatable about the central axis of the contact ring and adapted to electrically connect the fixed contacts one at a time with the contact ring. The moving contact includes two elongated contact elements. Each of the contact elements includes a first contact area for providing electrical contact with the fixed contacts and a second contact area for providing electrical contact with the contact ring. The moving contact is designed so an electric path is formed between the first and second contact area. The first and second contact areas are positioned on opposite sides of a plane orthogonal to a longitudinal axis of the moving contact and including the central axis of the contact ring.

A thick film polymer membrane switch can be positioned within a seat belt buckle. The switch can detect if the seat belt buckle is fastened or unfastened. In one approach, an apparatus includes a housing having a cavity, an insertion member moveable within the cavity, a connector positioned within the cavity, and a switch positioned within the cavity, wherein movement of the insertion member causes the connector to connect or disconnect from the switch. In some approaches, the switch includes a first conductive element formed adjacent a first layer of flexible film, and a second conductive element formed adjacent a second layer of flexible film, wherein the first and second layers of flexible film are separated by a gap.

A thick film polymer membrane switch can be positioned within a seat belt buckle. The switch can detect if the seat belt buckle is fastened or unfastened. In one approach, an apparatus includes a housing having a cavity, an insertion member moveable within the cavity, a connector positioned within the cavity, and a switch positioned within the cavity, wherein movement of the insertion member causes the connector to connect or disconnect from the switch. In some approaches, the switch includes a first conductive element formed adjacent a first layer of flexible film, and a second conductive element formed adjacent a second layer of flexible film, wherein the first and second layers of flexible film are separated by a gap.

A contact has a flat surface and a side surface that is parallel to the flat surface. At least a part of the side surface is curved so as to swell. At least a part of the contact is able to be elastically deformed in parallel to the flat surface.

A contact has a flat surface and a side surface that is parallel to the flat surface. At least a part of the side surface is curved so as to swell. At least a part of the contact is able to be elastically deformed in parallel to the flat surface.

An embodiment relates to a method for closing a switch and a switch for performing the method, the switch having a stationary switch contact including a stationary contact face, a movable switch contact including a movable contact face parallel to the stationary contact face and lying under pressure against the stationary contact face in the closed state, and an elastic transversal offset of the contact faces which ensures that pressure is applied when the contact surfaces lie against each other. To guarantee closing during a short-circuit, a displaceable counter-pressure element is provided which presses against the movable contact face in the open position and at least reduces the transversal offset. The counter-pressure element moves in conjunction with the movable switch contact towards the closed position when the switch closes. The counter-pressure element stops moving during the closing movement, while the movable contact face continues to move into the closed position.