Siemens Aktiengesellschaft

Michael Freimuth

Klaus Busch

Harald Krieger

Jürgen Renner

Fritz Royer

Siegfried Neumann

Wolfgang Schatz

Stephan Lehmann

Michael Poles

Mathias Baumann

Christian Widmann

Wolfgang Hussong

Matthias Weiss

Günter Bauer

Andreas Späth

Jakob Fuchs

Manuela Forster

Stephan Czekay

A force amplification module is disclosed for an electrical switching device, in particular a circuit-breaker, that is designed to amplify the release force of a shunt release which is designed to switch off the electrical switching device. A unit including a shunt release and the force amplification module for an electrical switching device is also disclosed, as well as an electrical switching device.

Force amplification module for an electrical switching device, unit comprising force amplification module and shunt release, as well as electrical switching device

A short circuit indicator module is disclosed for an electrical switching device, in particular for a circuit breaker. The electrical switching device is configured to interrupt a current flow in the event of a short circuit and/or an overload in a subordinate power circuit. The module includes a housing, a display facility for indicating tripping of the electrical switching device in the event of a short circuit and a movable unlatching element, it being possible for the display facility to be activated by a movement of the unlatching element and the unlatching element being configured to form a functional connection between the short circuit indicator module and the electrical switching device. The module is configured to test the activatability of the display facility of the short circuit indicator module and/or to test the functional connection between the short circuit indicator module and the electrical switching device.

Short circuit indicator module for an electrical switching device and electrical switching device

In at least one embodiment, an auxiliary switch includes a rotation part and a switching lever assigned to a configuration of the auxiliary switch, the switching lever being embodied to detect a switching state of the electrical switch and transmit it to the rotation part. Further, different switching states of the auxiliary switch are set by different rotary positions of the rotation part, with the rotation part having at least two engagement points and with the switching lever assigned to a configuration engaging in the engagement point assigned to this configuration.

Auxiliary switch for an electrical switch

An auxiliary tripping device is configured to interrupt a flow of current in the event of an undervoltage and/or a current pulse in a subordinate power circuit. The tripping device includes a spring element, a storage element which can be moved between a tensioned and a detensioned position, a trip element for tripping a trip mechanism of the electrical switching device and an activation element, the storage element being embodied in the tensioned position, when activated by way of the activation element, to emit the stored mechanical energy to the trip element. In an embodiment, a movably supported blocking element is provided, which is connected functionally in a first position to the storage element when the storage element is in the tensioned position, so that the storage element is held by the blocking element and in a second position the blocking element releases the storage element to perform a movement.

Auxiliary tripping device for an electrical switching device and electrical switching device

A power switch includes switch contacts that are opened via a switch shaft, which, when the switch is triggered, is actuated by way of the trigger slider of a trigger unit, in particular a working current trigger unit. The trigger slider moves the switch shaft by way of the trigger shaft of a switch latch, the trigger unit including electric coil into which an armature extends that is drawn into the coil by electromagnetic forces of attraction when the switch is triggered. A stationary counter armature is disposed in the coil, which counter armature serves as a stop for the armature, so as to increase the forces of attraction. The movement of the armature is transmitted by way of a mechanism to the movement of the trigger slider so as to increase the displacement path of the trigger slider.

Power switch having integrated trigger and drive unit

In an undervoltage tripping unit of at least one embodiment, an armature acts on a tripping slide via a drum. During tripping, an auxiliary switch is closed. In order to reset the under-voltage tripping unit after tripping, a latching mechanism of an associated circuit breaker acts on the drum via a driver bolt. At the same time, a projecting element is formed on the drum and closes the auxiliary switch when the drum is rotated back. The auxiliary switch therefore need not itself be directly coupled to the latching mechanism.

Auxiliary tripping unit for a circuit breaker

At least one embodiment of the invention relates to a contact apparatus for SMT placement on a printed circuit board, the contact apparatus being provided for the electrically conductive connection to at least one conductor track on the printed circuit board. The contact apparatus includes a contact holder for accommodating the contact, and the contact of the contact apparatus is provided for the connection to at least one electrical mating contact. The contact apparatus is designed on an SMT basis and can therefore be produced inexpensively and fitted easily. According to at least one embodiment of the invention, the contact apparatus has a first housing part, the housing part having at least one elongate cutout for accommodating the contact holder, and at least one stop for the contact being integrally formed on the housing part, which stop is provided for the purpose of absorbing insertion forces when contact is made between the contact and an electrical mating contact.

Contact apparatus for minimizing the load of mechanically loaded SMT soldered joints

An installation device includes connecting modules which, are easy to replace under aggravated conditions of access, while requiring little space. The device is provided with a retaining device for a supporting structure to be coupled thereto and additionally with a housing with integrated module slots for the connecting modules. In order to specifically assign the connecting modules to the module slots, the device is provided with one coding device for each module slot and one mating coding device for each connecting module. The device is also provided with one snap-in device on at least one of the module slots and one mating snap-in device on at least one of the connecting modules to lock and unlock the connecting modules in the corresponding module slots. One contact element each having a long side is provided for each module slot and one connecting module each is provided with one mating contact element, the contact elements being contacted with the mating contact element at an angle to its long side.

Modular installation device

Disclosed is a wiring device that can be equipped with at least one connection module and is provided with a contacting device(s). In order to protect the optionally live contacting device(s) of the wiring device with simple device(s) against accidental contact when contacting the connection module that can be coupled, an insulating device(s) is disposed at the end of and/or along the contacting device(s).

Modular wiring device

The Switchgear unit, especially a motor starter, has a contactor and a power switch for short-circuit protection. The additional function of overload protection envisaged for the switchgear unit is integrated in an overload relay that is configured separately from the power switch. The components thereof extend into free areas formed by the arrangement of the contactor and power switch as standard components on a support.

Switchgear unit for a consumer, especially a motor starter

The auxiliary switch ( ) has a slide ( ) with a gate ( ) as an actuating element that engages with the reversing lever ( ) acting upon the contact carrier ( ). After a first actuation stage, in which the slide ( ) pushes the contact carrier ( ) into the ON position, the actuating element of a basic switching device ( ) is actuated when pushing is continued.

Switchgear unit having a leading auxiliary switch

A switchgear unit having a switching device which has a rotary operating mechanism (,) and a breaker mechanism and having a leading auxiliary switch (,) coupled to it is provided. The switching device has a gate guide (,) which is in operative connection with a projection (,) on the contact bridge carrier of the auxiliary switch (,).

Growing community of inventors

Hirschau, Germany

Michael Freimuth