Abb S.p.a.

Abb Schweiz Ag

Maurizio Curnis

Federico Gamba

Stefan Valdemarsson

Alessio Bergamini

Henrik Breder

Edoardo Scola

Marley Becerra

Daniela Olivieri

Matteo Maura

An electrical switchgear for fast limitation and interruption of fault currents includes a fixed electrode, a movable electrode having a contact portion and a repelling portion, a plurality of contact fingers, and a coil. The coil is arranged adjacent to the repelling portion to induce eddy currents therein, the coil and the fixed electrode being arranged on the same side of the movable electrode, and the repelling portion being movable relative to the coil. The coil has a first dimension between two of its opposite lateral ends and defines an area which corresponds to a majority of a surface area of the repelling portion. The repelling portion provides a continuous current path, having a dimension corresponding to the first dimension, for eddy currents induced by the coil, whereby the movable electrode is pivotally thrown in a direction away from the coil and the fixed electrode, thus providing a circuit trip.

High speed limiting electrical switchgear device

A circuit breaker is shown which includes a plurality of fixed contacts and a plurality of corresponding movable contacts. An actuating shaft is operatively connected to and actuates the plurality of movable contacts to couple with/separate from the corresponding fixed contacts. A supporting device for the actuating shaft can be movably connected to a wall of the circuit breaker, and the actuating shaft can be operatively coupled to the supporting device to rotate around a rotation axis relative to the wall of the circuit breaker and the supporting device itself. The circuit breaker can include an adjustment device for adjusting at least the position of the actuating shaft relative to the wall.

Circuit breaker

Electrical component for low-voltage switching devices having an electrode comprised of a substantially rigid body with one or more slots and at least one flexible conductor with an end portion inserted into and joined to an associated slot by means of cold plastic deformation.

Connecting flexible conductors using cold plastic deformation

A low-voltage circuit breaker that comprises: a containment structure; a control mechanism; a plurality of circuit breaking poles, each of which comprises a housing containing a sealed ampoule that in turn contains at least one fixed contact and at least one moving contact, which can be mutually coupled and uncoupled, said housing consisting of a first side and a second side that define an interior containing said ampoule, the outer side wall on said first side being complementary to and associable with the outer side wall of said second side, said poles being located side-by-side to form a set of poles complementary to at least a part of said containment structure; operative connection means between said control mechanism and said poles.

Low-voltage circuit breaker with sealed interchangeable poles

A low-voltage circuit breaker that comprises: a containment structure; a control mechanism; a plurality of circuit breaking poles, each of which comprises a housing containing a scaled ampoule that in turn contains at least one fixed contact and at least one moving contact, which can be mutually coupled and uncoupled, said housing consisting of a first side and a second side that define an interior containing said ampoule, the outer side wall on said first side being complementary to and associable with the outer side wall of said second side, said poles being located side-by-side to form a set of poles complementary to at least a part of said containment structure; operative connection means between said control mechanism and said poles.

A low-voltage circuit breaker that comprises: a containment structure; a control mechanism; a plurality of circuit breaking poles, chosen between a first type of pole that comprises a first housing containing a first fixed contact and a corresponding first moving contact that can be coupled to said first fixed contact by means of its rotation around a point, and a second type of pole that comprises a second housing containing a second fixed contact and a corresponding second moving contact that can be coupled to said second fixed contact by means of a translatory movement along an axis; a first kinematic coupling between said control mechanism and said first moving contact, in the case of said poles belonging to said first type of pole, or a second kinematic coupling between said control mechanism and said second moving contact, in the case of said poles belonging to said second type of pole.

Low-voltage circuit breaker with interchangeable poles

The present invention relates to a single-pole or multi-pole switch to be used preferably in low-voltage systems. The switch () comprises an outer casing () containing for each pole at least one fixed contact () and one mobile contact () which can be reciprocally coupled to/uncoupled from each other. The mobile contacts () are housed in suitable seats () provided on a mobile element (). The switch () according to the invention is provided with a control mechanism () comprising mechanical means supported by a structural part (). This control mechanism () is connected to the mobile element () through first removable connection means () and to the outer casing () through second removable connection means (). The switch () also comprises means to support the mobile element () which are connected to the structural part () of the control mechanism () through third removable connection means ().

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Carvico, Italy

Maurizio Curnis