An electrical switch comprising a solenoid assembly including a core casing having a first bearing site and a bearing bush having a second bearing site, an armature movably borne in a switching direction at the first bearing site, and an armature shaft fixed to and movable with the armature and movably borne in the switching direction at the second bearing site.

A magnetic switch includes: a housing; a cylinder coupled to an inner side of the housing; a stationary contact arm coupled to the housing; a movable contact arm positioned to be movable within the housing and brought into contact with the stationary contact arm or separated therefrom; a coil assembly installed within the housing and configured to form a magnetic field when a current is applied thereto; a movable shaft coupled to the movable contact arm in an upper portion thereof; a fixed core inserted into the cylinder and surrounding the movable shaft; and movable cores fixed to the movable shaft and configured to press the movable shaft by a magnetic field formed by the coil assembly to move the movable shaft.

The invention relates to a single- or multi-pole switching device, in particular for DC applications, having at least one rotating switching element (2) which is connected to a drive, and also comprising switching contacts (4, 5), connection pieces (7) and connection poles or connection terminals (8) and a housing arrangement which accommodates the abovementioned parts. According to the invention, a movably guided rotary cylinder (2) is formed in the housing arrangement, said rotary cylinder being located in a body which is designed as a rotary cylinder holder (1). The rotary cylinder (2) has at least one contact pin (3) which passes radially or tangentially or eccentrically through the rotary cylinder and has, at its end, a contact piece (4) in each case. Mating contact pieces (5) are arranged in the rotary cylinder holder (1), said mating contact pieces being electrically connected to the connection pieces (7) or connection poles or connection terminals (8). A narrow, arc-influencing gap is present between the rotary cylinder (2) and the rotary cylinder holder (1), wherein, as a result of the movement of the rotary cylinder (2), the electrical connection between the contact pieces (4) and the mating contact pieces (5) can be broken by way of the contact pin (3) and the resulting disconnection arcs (11) enter the air gap subject to an extension and are rapidly extinguished there.

An electric switching apparatus including fixed contacts respectively supported by an upstream support and a downstream support and electrically connected to an upstream power line and to a downstream power line, respectively, the fixed contacts cooperating with respective upstream and downstream mobile contacts, each of the mobile contacts being supported by a support, the supports movable simultaneously in translation by a contact carrier controlled by an actuator. This apparatus includes a device for transforming, during a device opening operation in the presence of a microweld between one of the mobile contacts and the associated fixed contact, the movement in translation of the support associated with the mobile contact in a combined movement in translation and rotation of the mobile contact so as to exert at the points of contact between the mobile contact and the fixed contact a shear force capable of breaking the aforementioned microweld.

The present invention relates to a magnetic switch, and more particularly, a magnetic switch capable of preventing degradation of breaking efficiency by utilizing magnetic force to the utmost, in a manner of matching contact centers of fixed and movable cores. A magnetic switch according to one embodiment includes a bobbin provided with a cylindrical body and a plurality of flanges and having a coil wound on an outer circumferential surface thereof, a fixed core fixed to an inside of the cylindrical body with a predetermined spaced interval from the cylindrical body, and a movable core slidably installed in the cylindrical body and contactable with or separated from the fixed core, wherein a guide portion protrudes from a lower portion of the cylindrical body along an inner circumferential surface of the cylindrical body, such that the movable core can linearly move along a central axis of the fixed core.

Devices and assemblies are provided for operating circuit interrupters. A circuit interrupter assembly includes a circuit interrupter and a contact spring assembly. The circuit interrupter is located within the housing and includes a moving contact and a stationary contact. Contact spring assembly includes a mass, a plunger, a ferrule, a spring, and a dielectric drive rod. The mass defines an inner bore with a first diameter at a first portion of the mass and a second diameter that is larger than the first diameter at a second portion of the mass. The plunger has a flange portion and a body portion. The flange portion is located within the inner bore at the second portion and has a flange diameter that is larger than the first diameter. The spring is disposed within the inner bore between the plunger and the ferrule.

A Low Voltage, LV, network automation system is provided which enables utilities to remotely identify location of LV faults on their networks, isolate these faults and re-energizing the healthy LV circuit by remote control. The hardware for this system is designed to be retrofitted into existing LV switchgears and panels which enables the network changeover to be done cost effectively and with minimum interruption to the network. The system also enables utilities to monitor load flows on the LV networks and identify circuits which are overloaded and gives control room operator options for redistribution of network load where possible.

A Low Voltage, LV, network automation system is provided which enables utilities to remotely identify location of LV faults on their networks, isolate these faults and re-energizing the healthy LV circuit by remote control. The hardware for this system is designed to be retrofitted into existing LV switchgears and panels which enables the network changeover to be done cost effectively and with minimum interruption to the network. The system also enables utilities to monitor load flows on the LV networks and identify circuits which are overloaded and gives control room operator options for redistribution of network load where possible.

A relay according to one embodiment of the present invention includes a housing, a cylinder, a fixed contactor coupled to the housing, a movable contactor contactable with or separated from the fixed contactor, a coil assembly disposed in the housing to generate a magnetic field, a movable shaft coupled with the movable contactor at an upper portion thereof, a fixed core inserted into the cylinder, a moving core fixed to the movable shaft to move the movable shaft in a pressing manner, a wipe spring to supply elastic force to the movable shaft, and a return spring located between the fixed core and the moving core. The moving core includes a cylindrical protrusion extending toward the fixed core and surrounding the movable shaft.

Disclosed embodiments relate to a direct current relay. In some embodiments, a direct current relay is capable of reducing noise by attenuating an impact generated between a fixed core and a moving core during an ON operation, and by attenuating an impact generated between a shaft and a middle plate during an OFF operation.