Abstract: The invention relates to a voltage limiting device which has an electromagnetically operable switching device for producing an electrical connection between a first cable terminal and a second cable terminal wherein a first electrical conductor connects the first cable terminal to the one terminal of the switching device and a second electrical conductor electrically connects the second cable terminal to the other terminal of the switching device. The voltage limiting device is characterized in that one of the two electrical conductors comprises an electrically conductive support plate. The expansion of the support plate in the width direction allows, in contrast to an electrical conductor which is characterized by a small width in relation to the length, a current displacement in the width direction.

Abstract: A method of upgrading a vertical spindle pulverizer includes the steps of removing a cover from a journal opening in a housing of the pulverizer to access a grinding zone of the pulverizer, removing a first journal assembly having a toroidal grinding roll from the pulverizer through the journal opening, removing a plurality of toroidal table segments from a grinding table of the pulverizer, installing a plurality of inclined bull ring segments on the grinding table, installing a second journal assembly having a conical grinding roll in the pulverizer, and replacing the cover over the journal opening. The inclined bull ring segments are configured to register with a grinding surface of the conical grinding roll.

Abstract: A two terminal arc suppressor for protecting switch, relay or contactor contacts and the like comprises a two terminal module adapted to be attached in parallel with the contacts to be protected and including a circuit for deriving an operating voltage upon the transitioning of the switch, relay or contactor contacts from a closed to an open disposition, the power being rectified and the resulting DC signal used to trigger a power triac switch via an optoisolator circuit whereby arc suppression pulses are generated for short predetermined intervals only at a transition of the mechanical switch, relay or contactor contacts from an closed to an open transition and, again, at an open to a close transition during contact bounce conditions.

Abstract: The present invention relates to a method for monitoring at least one electronic switching contact for a door system for a vehicle, wherein the switching contact has a first connection for a first electrical line and a second connection for a second electrical line. The method comprises a step of reading a first signal from a first monitoring point connected to the first connection in order to obtain a first monitoring signal, a step of reading a second signal from a second monitoring point connected to the second connection in order to obtain a second monitoring signal, and a step of combining the first monitoring signal and the second monitoring signal in order to determine at least one state of the at least one switching contact.

Abstract: A linear connector contact array is presented with focus on the tails of the contacts that are connected to individual wires. A wire management comb made from dielectric material positions each wire over its contact's tail. The wire is attached to the tail by electrically welding the wire to the tail without removing the insulating material. This is accomplished with a heated welding electrode that melts through the insulator material until electrical contact is made with the wire. A non-heated electrode is beneath the tail to complete this circuit. The wire management comb has deep channels which form insulating ribs between adjacent wires. The weld sites are staggered, and exposed ends of the contact tails are held short of the end of the management comb.

Abstract: An electric switching system comprises first, second, and third input terminals, first, second, and third output terminals, an electric switching module, and a control module. The electric switching module includes two first switches and two second switches, each switch having a fixed input contact, a fixed output contact, and a mobile contact. Fixed input contacts are connected to fixed output contacts via mobile contacts in a closed position and insulated from each other in an open position. A holder member is configured to be moved by an electric driving device between a first position and a second position. The holder member includes a first mechanical coupling element and a second mechanical coupling element. The control module includes the driving device. The holder member is mechanically coupled to the driving device via the first coupling element in a primary configuration or via the second coupling element in a secondary configuration.

Abstract: Traditional contactors utilize a magnetic circuit that requires its coil to be continuously powered up to hold contacts together. They are heavy and bulky with the type, quality and size of materials used to develop sufficient magnetic force to hold contacts together. They are inefficient, costly and are a safety concern due to potential overheating which could result into fire or damage to connected loads. The current invention utilizes a solenoid actuator assembly with locking and unlocking mechanism in place of the yoke and armature assembly used in traditional magnetic contactors. It does not require the coil to be continuously powered up during operation and the contactor could be manually, electronically or electrically controlled thereby avoiding unnecessary power loss. They are very efficient, safe to users and connected loads, and have long service life expectancy. They are also more cost-effective and smaller in size than traditional magnetic contactors.

Abstract: A solenoid device includes at least one electromagnetic coil for generating a magnetic flux when energized, a fixed core constituting part of a magnetic circuit through which the magnetic flux passes, and plungers constituting the magnetic circuit together with the fixed core and configured to advance to and retract from the fixed core depending on whether the magnetic coil is energized or de-energized. The magnetic circuit is provided with a magnetic resistance part as a resistance for the magnetic flux. The plungers are configured to be attracted to the fixed core by energizing the electromagnetic coil.

Abstract: An exemplary medium or high voltage switch has a first set of contact elements and a second set of contact elements. Each contact element includes an insulating carrier carrying conducting elements. In the closed current-carrying state of the switch, the conducting elements align to form one or more current paths between terminals of the switch along an axial direction. For opening the switch, the contact elements are mutually displaced by through two drives along a direction perpendicular to the axial direction. The switching arrangement is arranged in a fluid-tight housing in a gas of elevated pressure or in a liquid. The switch has a high voltage withstand capability and fast switching times.

Abstract: A medium or high voltage switch has a switching assembly actuated by two drives. Each drive includes a plunger arranged between two Thomson coils. The coils as well as the plunger are rectangular for reducing the weight and therefore inertia of the drive and thus to increase drive speed.

Abstract: In one aspect, a modular meter disconnect relay is described. One embodiment of the relay is comprised of a base; a solenoid situated within the base, wherein the base maintains a portion of the solenoid stationary and allows a plunger of the solenoid to move within the base; a shuttle, wherein the shuttle is operably connected to and moved by the plunger of the solenoid and wherein the shuttle can be moved within the base; and, one or more disconnect switches that are opened or closed by movement of the shuttle, wherein the solenoid comprises a solenoid body, a spring and a magnet, wherein the spring is used to provide additional force to the plunger when moving out of the solenoid body and the magnet is used to latch the plunger when the plunger is forced to within close proximity of the magnet within the solenoid body.

Abstract: An electromagnetic switch for a starter. The electromagnetic switch includes a cylindrical slidable member that is separate from a plunger, loosely encompasses an outer circumferential periphery of a plunger rod, and is axially movable integrally with the plunger. The slidable member is at least partially axially inserted into an inner circumferential periphery of a cylindrical bore. The slidable member has a sliding surface such that, when the solenoid is in its inactive state, the sliding surface is entirely circumferentially in sliding contact with the inner circumferential periphery of the cylindrical bore, and has a vent groove axially extending on the outer circumferential periphery of the slidable member such that, when the solenoid is in its active state, a plunger compartment and the contact compartment are in fluid communication with each other via the vent groove.

Abstract: An electromagnetically operated switching device according to the present invention includes a pair of electromagnetically operated mechanisms for driving a main circuit contact of a switch via a link mechanism symmetrically arranged with respect to an operational center axis, and a length of a spring retaining plate can be regulated in accordance with a change of a link ratio, which is caused by a design change of the main circuit contact.

Abstract: A contactor is disclosed. The contactor includes one or more phase units, a mechanical drive and an electronic control module. Each phase unit includes an independent insulating housing, and, inside the housing, a positive pole, a static conducting rod, a negative pole, a moving conducting rod and a counter-force elastic component. The electronic control module drives a transmission to move, the transmission drives the central shaft to rotate, the central shaft drives the engagement between the moving conducting rod and the static conducting rod, the central shaft passes through the insulating housings of the one or more phase units and drives each phase unit, so that the contactor can be formed by absolutely independent phase units and it is convenient to add a phase unit along the central shaft so as to add rated operational current.

Abstract: Soft-start systems and methods for vehicle starters are provided. Embodiments provide a solenoid including: a first coil that receives power when an ignition switch is closed; a first plunger actuated when the first coil receives power; a first terminal configured to be abutted by a contact bar of the first plunger; a second coil that receives power when the contact bar of the first plunger abuts the first terminal; a second plunger actuated when the second coil receives power; and a second terminal configured to be abutted by a contact bar of the second plunger. Such a solenoid is configured to provide power at a first level to an attached motor when the contact bar of the first plunger abuts the first terminal and at a second level that is higher than the first level when the contact bar of the second plunger abuts the second terminal.

Abstract: The relay (KM) has at least first and second contact points (a1, a2), the states of which are switched from an open state to a close state by the drive of an electromagnet (32). The first and second contact points (a1, a2) switch the states between the open state and the close state by enabling movable contact pieces (31) to move with respect to respective fixed contact pieces (30) by using a power transmission mechanism (21) movable by the drive of the electromagnet (32). The first and second contact points (a1, a2) are set so that the second contact point (a2) is switched to the close state after the first contact point (a1) is switched to the close state and the first contact point (a1) is switched to the open state after the second contact point (a2) is switched to the open state.

Abstract: A polarized electromagnetic relay including an electromagnet; a pair of magnetic pole pieces driven by the electromagnet; a permanent magnet attached to the magnetic pole pieces; a contact section including a first fixed contact member with a normally open fixed contact, a first movable contact member with a normally open movable contact, a second fixed contact member with a normally closed fixed contact, and a second movable contact member with a normally closed movable contact; and a transmission member to which the magnetic pole pieces is attached. In accordance with a rectilinear movement of the magnetic pole pieces in parallel to a coil center axis, the transmission member rectilinearly moves in parallel to the center axis and thereby causes the normally open and closed movable contacts to perform an opening or closing operation in a mutually interlocked manner.

Abstract: A relay includes a pair of fixed terminals arranged to respectively have fixed contacts, a movable contact member arranged to have a pair of movable contacts, a driving structure operated to move the movable contact member and a magnet arranged to extinguish an arc. The movable contact member has a center section located between the pair of movable contacts. The magnet is placed on at least one of a first side and a second side that face each other across a predetermined face including the movable contact member and the pair of fixed terminals electrically connected by the movable contact member. The magnet is arranged to have a magnitude relation that a center area where the center section is located has a lower magnetic flux density than movable contact portions where the pair of movable contacts are located.

Abstract: A hybrid DC contactor includes contacts that provide a first current path between a DC power source and a load, an electromagnetic coil to position the contacts, a semiconductor switch in parallel with contacts that, when turned on, provides a second parallel current path that diverts current away from the contacts when the main contacts are being opened in either direction. A controller is provided to terminate power to the electromagnetic coil to open the contacts, detect an arc voltage across the contacts as the contacts open, provide a gate signal to the semiconductor switch to pulse the switch on for a pre-determined period of time to route current to the semiconductor switch, measure a current through the contacts and, if current is present through the contacts, then provide another gate signal to the semiconductor switch to pulse the switch on again so as to route current thereto.

Abstract: Traditional contactors utilize a magnetic circuit that requires its coil to be continuously powered up to hold contacts together. They are heavy and bulky with the type, quality and size of materials used to develop sufficient magnetic force to hold contacts together. They are inefficient, costly and are a safety concern due to potential overheating which could result into fire or damage to connected loads. The current invention utilizes a solenoid actuator assembly with locking and unlocking mechanism in place of the yoke and armature assembly used in traditional magnetic contactors. It does not require the coil to be continuously powered up during operation and the contactor could be manually, electronically or electrically controlled thereby avoiding unnecessary power loss. They are very efficient, safe to users and connected loads, and have long service life expectancy. They are also more cost-effective and smaller in size than traditional magnetic contactors.

Abstract: In one aspect, a meter disconnect relay is described that is comprised of a base, an actuator, a shuttle and one or more disconnect switches. The shuttle is operably connected to and moved by a plunger of the actuator. The one or more disconnect switches can be opened or closed by movement of the shuttle, wherein each disconnect switch is comprised of a rigid, conductive bridging section comprising at least two contacts; a conductive source portion having a source contact and a conductive load portion having a load contact.

Abstract: An electromagnetic contact device has a contactor holder (40), which moves a mounted movable contactor (42a) according to a displacement of a movable core (32) forming an electromagnet (30) for operation. The contactor holder (40) is being housed together with the electromagnet (30) for operation in a case (1). The case (1) has a lower case portion (10) housing the electromagnet (30) for operation and an upper case portion (20) engaging with the lower case portion (10) while being stacked on the lower case portion and houses the contactor holder (40) advanced from above. The upper case portion (20) has a recess (21) with an upward opening and houses the contactor holder (40) placed on the bottom wall of the recess (21). The lower case portion (10) houses one selected either a DC-only electromagnet (30b) or an AC-only electromagnet (30a).

Abstract: A sealed cased magnetic switch includes: a first contact pressure spring having one end supported by the movable contactor and applying an elastic force to the movable contactor to provide a contact pressure in a direction in which the movable contactor is brought into contact with the fixed electrode; a spring seat member supporting the other end of the first contact pressure spring and fixedly installed on the driving shaft; and a second contact pressure spring having a diameter larger than that of the first contact pressure spring and applying an elastic force at an outer position in a radial direction compared with the first contact pressure spring to the movable contactor in a direction in which the movable contactor is brought into contact with the fixed electrode.

Abstract: Terminal-bolts and a fixed contact are formed with different kinds of metals, and fixed to a fixing hole formed in the fixed contact by press fitting one end of the terminal-bolts. A plurality of concavo-convex parts is provided on a surface of the fixed contact that faces the movable contact. A plurality of concavo-convex portions is provided on another surface of the fixed contact that faces an anti movable-contact side. The concavo-convex portions are arranged so that positions of concave parts of the concavo-convex portions match positions of convex parts of the concavo-convex portions provided in the opposite surface of the fixed contact. The concavo-convex parts are at least partly curved, and have the same height and project in a height direction from the fixed contact.

Abstract: According to an illustrative embodiment, a switching device structure is provided comprising a cavity defined by a laminated structure; and a moveable member comprising a plurality of laminated layers, wherein the moveable member is suspended from a side surface of the cavity by a hinge comprising a plurality of adjacent electrical conductors. In one embodiment, a current conducting coil is formed within the moveable member, and first and second of the adjacent electrical conductors of the hinge respectively comprise coil-in and coil-out conductors electrically connected to the coil. In such an embodiment, the third and fourth of said electrical conductors may respectively comprise tip and ring conductors. In illustrative embodiments, each of the electrical conductors of the hinge may comprise a resilient or flexible copper material.

Abstract: A relay including a coil or solenoid, at least one fixed substrate and a moving substrate, a plurality of braided electrical contact element contacts making contact with pads on the fixed and moving substrates, returning springs mounted on alignment pins, and an optional cover for hermetical sealing. A further embodiment presents a horizontally-moving armature actuated by one or more solenoids.

Abstract: An electromagnetic relay including an electromagnet device having an electromagnet and an armature, a contact portion openable and closable according to a movement of the armature. The contact portion includes a plurality of fixed contact members in which fixed contacts are respectively arranged and a plurality of movable contact members in which movable contacts opposed to the fixed contacts are respectively arranged, wherein the plurality of movable contact members operate according to a movement of the armature. The electromagnetic relay further includes a printed board to which the plurality of fixed contact members and the plurality of movable contact members are respectively electrically connected, and a plurality of contact terminal members electrically connected to the printed board and adapted to be connected to electrical parts provided outside.

Abstract: A multi-pole circuit breaker and method include at least two breaker modules including circuit breakers therein. The circuit breakers include a moveable arm configured to connect and disconnect contacts therein. The at least two modules including armatures connectable to the moveable arms of each of the at least two modules. A center module connects the at least two modules. The center module includes an actuator and a beam connected to the actuator at a mid-portion. The beam connects to each armature of the at least two modules wherein under a trip condition the actuator displaces the beam to simultaneously trip the at least two modules using the armatures.

Abstract: An electromagnetic switch is described as including a starter relay, in particular, for an electrical starter motor for controlling a starter pinion when starting an internal combustion engine, having a housing, an armature electromagnetically controllable therein, for controlling a control lever, and having a flexible protective cap which seals a transition from the housing to the armature, the protective cap being developed to be pot-shaped and having a pot floor and a pot opening, the pot floor having a circular opening having a thickened ring for the form-locking connection to the armature, and the pot opening being developed reinforced at its circumferential edge for the form-locking connection to the housing, the pot floor having a setpoint bending region, as seen in cross section. In order to create a small installation space, the protective cap has an arrangement or structure, on its inner wall, for connecting to the housing, which are able to be connected to the housing in a form-locking manner.

Abstract: An electrical switching device facilitates selectively controlling a residential power feed. The switching device is configured to couple between a residential electrical-energy meter and a residence. The switching device includes at least one conductor bus bar element, a yoke, and a solenoid assembly. The solenoid assembly includes a biasing member and at least one shorting bar coupled to the biasing member. The at least one shorting bar is movable relative to the at least one conductor bus bar element.

Abstract: A method for producing a switching device with a switching device with a switching structure (1). The method includes producing a molded part, which includes a cage formed by opposing first sidewalls (5) and a bottom wall (6) integrally connecting the first sidewalls, and second sidewalls (23) integrally connected to the cage assembly, severing the molded part at a point where the second sidewalls are connected to the cage, and inserting the cage and the severed second sidewalls into a bottom part such that a defined gap (27) is left, respectively, between the cage and the second sidewalls.

Abstract: In one example embodiment of the present application, the switching device includes a first switching point for normal switching of at least one current path, and includes a second switching path for disconnection of a short-circuit current. The first and second switching points are connected in series, and are accommodated in a common enclosure. Electrical connections and, if required, a control connection for inputting a switching command, are provided in or on the enclosure for connection of the current paths. The first switching point is designed for a maximum continuous current. The second switching point is designed to disconnect a short-circuit current which is a multiple of the maximum continuous current. The first switching point includes at least one main contact which can withstand a short-circuit at least for the time by means of a contact holding system or a contact locking system.

Abstract: A movable contact holder includes a movable contact holder base and a movable contact holder cover. One side of the movable contact holder base is opened to have a plurality of recesses each being formed for holding a contact pair, each contact pair include a bridge contact assembly and a contact spring inserted therein while being isolated from the other pairs. The other side of the movable contact holder base is formed as a bottom wall, and preferably includes openings through which an assembly jig can be inserted from outside the moveable contact holder. Alternatively, jig openings can be formed in lateral side walls of the recesses to allow the assembly jig to be inserted. The movable contact holder cover covers the movable contact holder base and is coupled thereto.

Abstract: According to the invention, an electromagnetic switch includes a pair of fixed contacts, a movable magnetic core, a magnetic coil, and a fixed magnetic core. The movable magnetic core is configured to be moved by a magnetic attraction, thereby establishing an electrical connection between the fixed contacts. The fixed magnetic core is configured to create the magnetic attraction when the magnetic coil is energized. The fixed magnetic core has a base portion and a disc portion. The base portion is arranged to face the movable magnetic core. The disc portion is fixed to the base portion and formed of a stack of metal sheets including at least one base metal sheet and a balance metal sheet. The balance metal sheet has a thickness that is predetermined to balance a difference between a desired thickness of the disc portion and a total thickness of the at least one base metal sheet.

Abstract: In an electromagnet switch, a stationary iron core is composed mainly of a base part and a disk part. The base part is faced to a plunger and the disk part is forcedly inserted and fixed to a boss part formed in the base part. The disk part is composed of a metal plate of ferromagnetic substance (iron plate) and another substance plate (made of resin or rubber and the like, for example,) of a smaller spring constant or a larger damping coefficient than that of the metal plate. The metal plate and another substance plate are laminated. Another substance plate absorbs or reduces the impact force when the plunger is electromagnetically attracted toward and collides with the base part. The propagation of a large impact noise or crashing sound is thereby suppressed, and as a result the impact noise can be reduced.

Abstract: The disclosure relates to an electromagnetic actuator, such as for a medium-voltage switch, having a core having a coil applied to it, and a movable yoke. A method for producing such an actuator is also disclosed. A compact design can be achieved with, at the same time, a high level of actuator force, using a magnetic circuit of the actuator which has a rectangular magnet core and a round yoke which corresponds to the magnetic circuit of the magnetic core.

Abstract: A contactor is disclosed, including a housing, which has a mounting side, an operating side, two main connector surfaces and two side surfaces. In at least one embodiment, the operating side lies opposite the mounting side and is connected to the mounting side by way of the main connector surfaces and the side surfaces, wherein the main connector surfaces lie opposite one another and the side surfaces lie opposite one another. The operating side has a raised central area and two edge areas, which border the central area on both sides of the central area, wherein the edge areas border the main connector areas and are connected to the central area by way of an additional connector area in each case. Main terminals, which are connected to load contacts of the contactor, have main receptacle openings into which main conductors can be fed from one of the main connector surfaces in each case.

Abstract: A multipole switching device selectively switches electrical power from an electrical power source to a load circuit. A first control device comprises a housing mountable in a panel, an electromechanical actuator in the housing including a movable plunger, and an electrical switch in the housing operated by the plunger. A second control device comprises a housing mountable in a panel, adjacent the first control device, a mechanical actuator in the housing including a movable link, and an electrical switch in the housing operated by the movable link. A third control device comprises a housing mountable in a panel, adjacent the second control device, an electromechanical actuator in the housing including a movable plunger, and an electrical switch in the housing operated by the plunger. A tie linkage mechanically ties the first control device plunger and the third control device plunger to the movable link.

Abstract: A method and assembly for use with a printed circuit board (PCB), the assembly comprising a relay assembly including a relay housing and a trip free reset assembly mounted within the housing and linked to other relay components mounted within the housing for manually resetting the relay after the relay is tripped and at least one pin linked to at least one of the relay components and including a distal end extending from the housing and suitable for direct connection to the PCB.

Abstract: Each power source switching unit (8) of a electric power system (1) constituted of a power operating system having a power generator (3) driven by an external power source (40) and an engine (4) is constituted of a means for sensing information on a selected power source and supply power in time series, calculating a supply power quantity every power source on the basis of sense data, and storing these sensing and calculated data. This power source switching unit (8), disposed every power load group, comprises a means for communication with another power source switching unit (8). A power source management system, constituted of the power source switching unit (8), comprises a means for transmitting the sensed data or calculated data of each power source switching unit (8) to the control system of the power generating system, a means for receiving data transmitted from the power source management system, and an image display means for displaying the received data by graphing.

Abstract: The invention concerns a switching appliance comprising several main dual cut-out poles provided with fixed contacts housed in an arc box and mobile contacts located on a mobile contact-holder (30). The latter is equipped, for the main contacts, with main housings (31) aligned transversely to the direction (X) of displacement of the contact-holder (30), and, for the auxiliary contacts, secondary housings (32) aligned transversely to the direction (X) and located in front of the main housings (31). The contact-holder comprises between the main housings and the secondary housings a vertical insulating wall (35). The arc box consists of two half boxes (20, 40) assembled in a horizontal plane, so that one of the two halves provides guiding elements and stop elements for the contact-holder (30).

Abstract: A latching magnetic relay assembly comprises a relay motor with a first coil bobbin having a first excitation coil wound therearound and a second coil bobbin having a second excitation coil wound therearound, both said first excitation coil and said second excitation coil being identical, said first excitation coil being electrically insulated from said second excitation coil; an actuator assembly magnetically coupled to both said relay motor, said actuator assembly having a first end and a second end; and one or two groups of contact bridge assemblies, each of said group of contact bridge assemblies comprising a contact bridge and a spring.

Abstract: The invention relates to a twin relay with at least two drive mechanisms which are separate from each other. The drive mechanisms each act on designated contact springs and both act on a single contact assembly.

Abstract: An arcing chamber assembly is described having two side walls, a contact compression spring, a contact link, a slide which can be mounted one behind the other in the interior of the arcing chamber assembly, just by stacking them from one side. For this purpose, the arcing chamber assembly includes a passage, whose length is at least equal to the length of the contact link on the component supply side.

Abstract: A magnetic switch having a main motor switch for supplying power from a battery to a starter motor and an auxiliary relay for operating the motor switch is mounted on the starter motor. The main motor switch includes copper contacts switching a large amount of starter current, and the auxiliary relay includes contacts switching only a small amount of current sufficient to operate the main motor switch. The auxiliary relay is separated from the main motor switch by a wall to protect the auxiliary relay, especially its contacts from copper dusts generated in switching operation of main motor switch. Since the auxiliary relay is kept free from the copper dusts, the magnetic switch properly functions for a long time.

Abstract: The present invention is for a bi-stable battery switch incorporated preferably for internal use into a remotely switchable storage battery, or, in the alternative, for external use with a battery. A bifurcated contact assembly incorporating dual bus bars is pulse actuated by a solenoid and cam arrangement to engage or disengage across opposing contacts. When engaging the contacts and when associated with high inductive loads, the first bus bar to advance initiates contact and assumes the arcing load, while the second bus bar to advance assumes the current load. When breaking contact and when associated with high inductive loads, the first bus bar to retreat breaks the current load and the second bus bar to retreat breaks the arcing load. Thus, the loads are shared to increase the durability and length of service of the switch.

Abstract: Electromagnetic switching device including a movable contact-holder fitted with a set of contact bridges bearing movable power contacts that operate in conjunction with fixed contacts, and an electromagnet composed of a coil, a fixed framework and movable framework. The movable contact-holder includes an assembling device including at least one elastic clipping foot for fastening the movable contact-holder of the electromagnet to the movable contact-holder, characterized in that the assembling device is equally suitable for direct and indirect assembly of the movable framework onto the movable contact-holder according to the type of movable framework used in DC or AC electromagnets.

Abstract: In a magnetic switch for a starter, an impact force due to return force of a contact pressing coil spring 25 for a plate shaped movable contact 19 is received by a collar 18a formed integral with a movable non-magnetic shaft 18, and an insulative spring stopper member 22 having a cylindrical portion 22a is disposed beneath the contact pressing coil spring concentrically therewith in an overlapping manner along the movable non-magnetic shaft. A hollow cylindrical coil 14 is secured by a casing side plate 16 of a casing 15 and another side plate 17 having a tapered cylindrical protrusion 17a in axial and radial directions with respect to a magnetic core including the side plates 16, 17 and the casing 15.

Abstract: A mechanical latch relay started by a current pulse is disclosed which comprises an electromagnetic generating unit, a connecting mechanism and a mechanical locking mechanism, and which can maintain the existing operation state when the current pulse starting the relay disappears, and it changes its operation state when another current pulse is provided, and then it keeps the operation state even if the pulse disappears so that it can provide a stable operation state of current on/off unnecessary to be provided with a current for a long time, which enables to provide an effective control for current on/off.

Abstract: An electromagnetic switching device (2) with restricted guidance, in which the closure contacts do not come into contact when the break contact is welded or fixed. An elastically resilient transmission lever (10) is provided to establish the effective connection between the armature (8) and the contact support (12) extending at a distance from and parallel to the armature.