Abstract: The present invention provides an electrical contactor for connecting and disconnecting an electrical power source to an electrical device wherein the electrical power source is electrically connected to a line terminal having a line terminal electrical contact and the electrical device is electrically connected to a load terminal electrical contact. The electrical contactor contains a plurality of electrical contacts which contact the line and load terminal electrical contacts.

Abstract: An expandable, modular electronic equipment enclosure (8) for telecommunications, signaling, or other electronic equipment, wherein the enclosure (8) includes male and female expansion interfaces (20,22) that allow for expanding the enclosure (8) by adding substantially similar modules (110,210) whenever increased capacity is needed. Broadly, each module (10) includes a housing body (12); a lid (14); a base (16); the male and female expansion interfaces (20,22); and a cap (24). A single cable interface and pressurization control componentry (18) serves all of the modules (10,110,210) of the enclosure (8). To expand the enclosure (8), the male or female expansion interface (120,122) of a subsequent module (110) is interfaced or mated with the corresponding exposed, unmated female or male expansion interface (20,22) of a preceding module (10). The cap (24) seals and protects the exposed, unmated expansion interface (120,122) of the last or end module (110) of the enclosure (8).

Abstract: Apparatus for motor protection and control including power conductors including poles with separable contacts, a trip mechanism connected to an electromagnet, a mechanical device, a connecting strip and a manual control button, a protection device including means for detecting currents flowing through the power conductors and means for generating an initiating signal to control the trip mechanism, the electromagnet and the mechanical device, wherein the mechanical device is for actuating the separable contacts and the connecting strip, and the manual control button is for actuating the mechanical device, wherein the mechanical device includes means for automatically resetting the trip mechanism after the trip mechanism has tripped and means for returning the mechanical device to an OFF position.

Abstract: A signal accessory for a molded case circuit breaker, with the circuit breaker (10) having an operating mechanism (40) with a cradle pin (41b), a cross bar (55) and a trip bar (54) and a main breaker cover (20). The signal accessory (300) comprises a signal accessory mounting (301) having a bottom mount (308) and a top mount (306) coupled to the bottom mount (308) with the top mount configured to receive a switch (302, 304) and engage the breaker cover (20) in an accessory socket (22). A switch member (311) is rotably mounted on the bottom mount (308) with the switch member (311) having an actuator lever (322) in contact with the operating mechanism (40) of the circuit breaker (10) and an actuator pad (314) in contact with a switch mounted on the top mount (306).

Abstract: A modular asynchronous contactor assembly includes a contactor for each phase or pole of an electrical device. The contactor assembly is applicable as both a switching device and an isolation or load protection device. As such, each contactor is constructed so that each includes multiple contact assemblies. Moreover, the contactors within a single contactor assembly or housing can be independently controlled so that the contacts of one contactor can be opened without opening the contacts of the other contactors of the contactor assembly.

Abstract: A power saving electromagnetic switch, which is developed to reduce power consumption and implemented using low trouble mechanical parts compared to a conventional electromagnetic switch in which a fixed iron core is electrified to fasten a movable iron core and then a continuous current passes through the fixed iron core during the operation thereof. The power saving electromagnetic switch includes a fixed iron core, a movable iron core and a fastening bar. The fixed iron core includes a guide hole vertically formed from a top thereof, and a through hole formed to penetrate through a side of the fixed iron core and to communicate with the guide hole. The movable iron core moves upward or downward to come into contact with the top of the fixed iron core, and includes a guide rod mounted on a bottom thereof so as to be inserted into the guide hole, the guide rod having a fastening hole formed at an end thereof.

Abstract: In an electromagnetic switching device including a cylindrical part made of a magnetic material with a closed bottom for housing a movable iron core having a movable contact and so constructed as to render the movable contact movable toward and away from a fixed contact, a joint member made of a metallic material with an insertion hole formed substantially in the center thereof for movably receiving a movable shaft fixedly attached to the movable iron core, and a metal plate made of a non-magnetic material with a hole formed substantially in the center thereof with the inner diameter substantially the same as the inner diameter of the cylindrical part, the cylindrical part and the joint member are air-tightly jointed to each other with the metal plate provided therebetween, and the movable iron core is housed in the cylindrical part with a clearance defined between the movable iron core and the joint member corresponding to a required stroke within which the movable contact contacts the fixed contact.

Abstract: A switching chamber enclosure includes a number of enclosure parts with specific functional subdivision, in which switching elements are arranged. The enclosure of the switching device is formed at least by one lower shell and one upper shell, which are separated from one another by a horizontal separating joint. In addition, one or more intermediate shells may provided, which are likewise separated from the lower shell, from the upper shell and from one another by horizontal separating joints.

Abstract: An electromagnet system for a switch includes a main magnetic circuit including a magnet yoke and a magnet armature mechanically linked to a contact apparatus. At least one permanent magnet is disposed in the main magnetic circuit for generating a holding force for the magnet armature. A shunt circuit is provided parallel with the main magnetic circuit so that the permanent magnet is a magnetic energy source for the shunt circuit. The shunt circuit includes pole legs and a yoke arc of the magnet yoke. The magnet armature is capable of contacting the pole legs so as to close the shunt circuit. An excitation winding is provided for each of the pole legs for to generating a pull-in force for the magnet armature. The electromagnet system is magnetically dimensioned such that a minimum magnetomotive force of the excitation windings is sufficient for opening the electromagnet system.

Abstract: Disclosed is an accessory device for a manual motor starter attached to one side of a body of the manual motor starter so as to perform various accessory functions, such as a forcible trip function for the manual motor starter by remotely switching the manual motor starter or a trip function for the manual motor starter when under-voltage occurs between a power source and load. A remotely switchable trip function and under-voltage trip function are achieved by using one accessory device.

Abstract: A circuit breaker has a main housing, and a pocket-shaped auxiliary equipment storage section is formed in the housing. A cassette type auxiliary switch is inserted into and attached to the auxiliary equipment storage section. The auxiliary switch is connected to a switching mechanism in the main housing of the circuit breaker so that the circuit breaker performs switching operations. The circuit breaker includes a locking device for positioning the auxiliary switch inserted into the auxiliary equipment storage section at a predetermined position. Further, an engagement-type stopper is provided for fixing the auxiliary switch at the position where the auxiliary switch is inserted into the auxiliary device storage section.

Abstract: A contractor (1) having at least two spaced-apart fixed contacts (2, 3) and an at least sectionwise electrically conductive, movable contact bridge (9) having at least two contact points (8) which are associated with the fixed contacts (2, 3). The contact bridge is adapted to be moved to a switched position by a switching force (B) and to a rest position by an opening force (V). The opening force (V) is produced by a pretensioning device (13). A particularly advantageous distribution of the opening force to the two contact points and a reliable switching operation is achieved in that one contact (2) is arranged between the other contact (3) and a point where the opening force (V) acts on the contact bridge (9).

Abstract: An assembly for interacting with a circuit breaker operating mechanism of a circuit breaker, the assembly including an accessory device, an actuator, and a compliant device. The accessory device includes a plunger configured for movement between a retracted position and a protruded position. The actuator includes a first free end and a second free end, the second free end configured for mechanical cooperation with the plunger. The compliant device is disposed intermediate the operating mechanism and the actuator, the compliant device is configured for mechanical cooperation with the second free end of the actuator. A force is applied from the operating mechanism to the accessory device, the force for resetting the accessory device is transmitted from the operating mechanism to the compliant device, from the compliant device to the actuator, and from the actuator to the plunger for resetting the plunger from the protruded position to the retracted position.

Abstract: This invention relates to a multi-pole contactor—circuit breaker type switch composed of a housing (1) containing breaking poles (11) activated by a control electromagnet (16) and by a trip control mechanism (18, 14) and comprising a protection module (2) equipped with means (21) for measuring pole currents and means (22) for acting on the electromagnet (16) and on the trip control mechanism (14) if a fault current is detected, characterised by the fact that it comprises a control and/or communication module (3) that is installed removably on the housing, below the protection module (2) and communicating with the processing circuit (22) on the said protection module (2) through connectors (23, 33).

Abstract: The invention relates to an electromagnetic switching device, in particular a contactor, comprising a switching device housing (2) and a plug-in module which can be inserted into the latter and which contains a coil form (12) for a coil. A tripping element (60) is mounted on a housing section (40) of the plug-in module (4). Said element is designed to mechanically actuate the contact unit (30) of an electric switch (24) for producing an economy connection. The switch (24) is mounted on a support structure (printed-circuit board (22)) that is located in the plug-in module (4), with a supporting contour (70) of said switch adjoining a bearing contour (72) of the housing section (40).

Abstract: A signal accessory for a molded case circuit breaker, with the circuit breaker (10) having an operating mechanism (40) with a cradle pin (41b), a cross bar (55) and a trip bar (54) and a main breaker cover (20). The signal accessory (300) comprises a signal accessory mounting (301) having a bottom mount (308) and a top mount (306) coupled to the bottom mount (308) with the top mount configured to receive a switch (302, 304) and engage the breaker cover (20) in an accessory socket (22). A switch member (311) is rotably mounted on the bottom mount (308) with the switch member (311) having an actuator lever (322) in contact with the operating mechanism (40) of the circuit breaker (10) and an actuator pad (314) in contact with a switch mounted on the top mount (306).

Abstract: An electrical switching system comprises a main housing enclosing an actuable apparatus including an actuator extending outwardly of the housing. A contact housing encloses an electrical contact and a pusher selectively actuable by the actuator to operate the contact. A mortise is provided on one of the main housing and contact housing and a tenon is provided on the other of the main housing and contact housing for joining the contact housing to the main housing. A snap lock resiliently locks the contact housing to the main housing.

Abstract: An electromagnetically actuable device includes a base. A magnetic core is fixedly mounted to the base. An armature is movably mounted to the base proximate the magnetic core. A coil is fixedly mounted to the base and is selectively energized to draw the armature to the magnetic core. The armature and magnetic core have mating surfaces adapted to provide three contact areas in a triangular configuration to provide minimal magnetic air gap and a stable interface when the coil is energized.

Abstract: A switching device, in particular a position sensing switching device, generates switching signals. The position sensing switching device comprises at least one switching unit and at least one activation unit, the switching unit reacting to a relative spacial displacement of the switching unit and the activation unit with respect to one another by outputting appropriate switching signals. The switching unit is embodied as an inductive switching unit and the activation unit is embodied as an inductive damping unit. The position sensing switching device according to the invention is preferably applied in gear-speed-changing units for automatic gearboxes.

Abstract: A contact assembly for use in an electrical switching apparatus has an actuator. An enclosure comprises an interior space housing first and second stationary contacts fixedly mounted in spaced relation with one another in one of a normally closed position or a normally open position. A pusher is movably mounted in the enclosure and is selectively driven by the actuator to move between a normal position and an actuated position. The pusher comprises a top wall, a bottom wall and first and second side walls connected between the top wall and bottom wall to define an opening having respective first and second ends. First and second longitudinally spaced top ribs are on an inside of the top wall proximate the respective first and second side walls. First and second longitudinally spaced bottom ribs are in an inside of the bottom wall proximate the respective first and second side walls and laterally offset from the respective first and second top ribs. A movable contact is received in the opening.

Abstract: A circuit breaker includes a molded case comprised of a case and a cover. Terminal parts to be connected to a power supply and a load are provided respectively at front and rear ends of the molded case. A control mechanism for switching a movable contact is disposed between the front and rear terminal parts. The cover is divided into three parts for covering the control mechanism and the terminal parts disposed at front and rear of the control mechanism, respectively. The front and rear parts of the cover covering the terminal parts are detachably mounted on the molded case as terminal covers.

Abstract: A latching mechanism is for locking an actuating shaft of an electrical switch, which can be transferred from an OFF position into an ON position by a drive train counter to the force of at least one first spring, in its ON position. The latching mechanism includes a first lever, which is pivotably coupled to the drive train of the actuating shaft and is supported against a stop held in a locking position. For accelerated release of the actuating shaft, also provided is a second lever, which has a working surface assigned to the stop. In this case, the second lever is held in a first stop position against the first lever by way of a second spring. When the second lever pivots under the action of an initiating force, which opposes the force of the second spring, the working surface acts in such a way on the stop that the stop is transferred into a release position.

Abstract: The aim of the invention is to protect an electromagnet switching device when a load is switched to a supply voltage. A current that flows through the load contact is monitored. The electric circuit is interrupted when the current exceeds a threshold value that is below the current carrying capacity of the load contact. The electric circuit is automatically closed again after the current which flows through the load contact has decreased.

Abstract: An electromagnetic switch includes a contact holding member connected to a plunger in order to hold a first movable contact. The contact holding member is disposed outside a switch case covering a periphery of an excitation coil. A return spring pushes the plunger back in the opposite direction to a fixed iron core through the contact holding member when electric power supply to the excitation coil is stopped. The return spring is disposed outside the switch case. In this structure, a spring holding portion does not need to be disposed in the fixed iron core and the plunger. Therefore, an area where the fixed iron core attracts the plunger can be increased, so that an attraction force can be increased.

Abstract: There is disclosed an electromagnetic relay comprising a stationary first member and a second member adapted to move towards and away from the first member such that when the second member move towards the first member an electrical contact is closed. Spring means biases the members apart, and permanent magnet means are provided for generating a force of attraction between the members, and selectively operable means is provided for generating an electromagnetic force. The permanent magnet means has a strength such that when the first and second members are apart the permanent magnet means is insufficient to overcome the spring means, but when the members are brought together the permanent magnet means is able to hold the members together against the spring means.

Abstract: A circuit breaker (10, 12) includes a sensing circuit (48, 50, 52), a control circuit (46), an actuator (42), an operating mechanism, and an interlock mechanism (70, 94). The sensing circuit (48, 50, 52) is configured to generate the sense signal representative of a power signal flowing through a power circuit (54, 56, 58). The control circuit (46) has a frame (74, 76) and is configured to receive the sense signal and to provide a trip signal on a first terminal (68). The actuator (42) is external to the control circuit frame (74, 76) and has a second terminal (98) coupleable to the first terminal (68). The actuator (42) is configured to receive the trip signal on the second terminal (98). The operating mechanism is coupled to the actuator (42) and is configured to open and close the power circuit in response to actuation of a lever (36). The actuator (42) is configured to actuate the lever (36) in response to the trip signal.

Abstract: A circuit-breaker including a an interrupter chamber housing that includes a plastic material and houses an interrupter. The interrupter includes at least one stationary contact member, which, via a busbar is connected to a corresponding connecting terminal and a moveable contact member that is moveable connectable to the stationary contact member. To ensure that heat generated by the busbar is more rapidly released into the switch compartment housing the busbar is imbedded in an outer wall of the interrupter chamber housing and in contact with the housing by a form fit or a force fit.

Abstract: An electromagnetic device of a switching apparatus including a mobile armature for rotating in a fixed frame between two inactive and active positions, at least one permanent magnet mounted in the fixed frame, and at least one coil mounted in the mobile armature and control means for delivering a control current into the coil. The mobile armature is monostable; in an inactive position, a lever actuated by the mobile armature separates the fixed contacts from the mobile contacts of the apparatus. In an active position, the lever is released from the mobile armature and a spring presses the mobile contact against the fixed contacts.

Abstract: A low-voltage power circuit breaker includes a current-limiting opening of a mobile switching contact. The force-transmitting connection between the actuating shaft lever and the mobile switching contact or the contact support is provided in the form of a latching device and includes two identical levers, which can pivot in relation to one another around an articulated joint and which are joined to one another by way of the articulated joint that is formed by a joint pin guided through aligned continuous borings provided in concentric parts of the levers. The contact surfaces of the levers have slanted surfaces that serve as a tooth. In the vicinity of the articulated joint, the levers are subjected to the action of an adjustable spring force, which is exerted by a pressure spring and which acts upon the tooth.

Abstract: A circuit breaker includes a switching mechanism, a manual operating handle connected to the switching mechanism, and an instantaneous tripping device for detecting a short circuit current and opening contacts of a main circuit. The instantaneous tripping device and a latch receiver of the switching mechanism are connected with each other via a trip member capable of sliding up and down. Further, the circuit breaker includes a trip indicating member moving along with the trip member, and a trip indicating window formed in a breaker housing and facing the trip indicating member. The trip indicating member moves to an indicating position to visually indicate a tripping state of the circuit breaker through the trip indicating window when the circuit breaker member instantaneously trips.

Abstract: A switchgear, for low-voltage switching units with a linearly-displaceable contact support, includes a case-like housing with guide grooves, running in the direction of travel of the contact support, in the housing side walls thereof. Suitable projections on the side of the contact support, engage in the grooves, whereby the linear travel of the contact support is achieved. Pivoting contacts are arranged on the contact support as displaceable switch contacts.

Abstract: An electromagnetically actuable device has a magnetic core proximate an armature and a coil selectively energized to draw the armature to the magnetic core. The armature and magnetic core are of laminated magnetic steel and have mating surfaces. At least one of the armature and magnetic core includes conductive weld or braze lines for integrally securing laminations together to define a conductive path proximate the mating surface to provide a shading coil.

Abstract: Disclosed is an electromagnetic switch device for star-delta connections including a body, three power terminals respectively connected to three-phase power lines at one side of the body, three main starting terminals respectively connected to one-side terminals of a three-phase electric motor at the other side of the body, three star-delta terminals respectively connected to the other-side ends of the three-phase electric motor at the other side of the body, an electromagnet for a main circuit and an electromagnet for star-delta connections disposed at a lower portion of the body in such a fashion that they are laterally aligned with each other, each of the electromagnets including a fixed core and a coil wound around the fixed core, a main circuit switching unit serving to selectively connect each of the main starting terminals to an associated one of the power terminals in accordance with a magnetization of the main circuit-end electromagnet, and a star-delta connection switching unit serving to selectivel

Abstract: An earth leakage detection device (14) includes a housing (52) and an earth leakage detection circuit (114) mounted within said housing (52) for detecting earth leakage in the electrical distribution circuit. A dielectric test switch (115) is arranged between the electrically conductive strap (18) and the earth leakage detection circuit (114). Pressing the button (84) causes said dielectric test switch (115) to stop the flow of electrical current from said electrically conductive strap (18) to said earth leakage detection circuit (114) to protect the circuit (114) during dielectric testing. A lever arm (605), pivotally secured within said housing (52), causes said trip/reset mechanism (116) to actuate the circuit breaker (12) when said button (84) is pressed. The trip/reset mechanism (116) is resiliently mounted within said housing (52), independently from said transformer (182).

Abstract: An assembly for interacting with a circuit breaker operating mechanism of a circuit breaker including a housing and a pair of contacts within the housing, the operating mechanism arranged to separate the pair of contacts upon the occurrence of a trip event is disclosed. The assembly includes a plurality of linkages arranged to transmit mechanical energy from the operating mechanism to a plunger of an accessory device for changing a state thereof. The system of linkages is configured to compensate for any over-travel resulting from possible tolerance variations.

Abstract: The present invention provides a formed interface there between a magnetic core proximate an armature of an electromagnetically actuable device. A coil of the electromagnetically actuable device is selectively energized to draw the armature to the magnetic core. The formed interface is adapted to provide three contact areas in a triangular configuration at the mating surfaces of the armature and magnetic core which causes a minimal magnetic air gap and a stable interface there when the coil is energized. The formed interface overcomes the surface deformations of the armature and magnetic core to reduce vibration and noise.

Abstract: An electromagnetic switching device includes an electromagnetic drive apparatus and has a moving contact element which can be operated by this drive apparatus. The moving contact element can be switched between a bridging position, which connects a pair of stationary contacts, and a disconnected position, which disconnects the stationary contacts. The electromagnetic switching device also has an actuating apparatus having an actuating element which interacts with the moving contact element and can be moved between an operating position and a safe position. In the operating position, the moving contact element can be switched by the electromagnetic drive apparatus between the bridging position and the disconnected position. Further, by movement of the actuating element to the safe position, the moving contact element can be blocked from moving from the bridging position to the disconnected position, and can be blocked in the disconnected position.

Abstract: An electromagnetic switching device, especially a contactor, includes a base, an arc chamber removable from the base, a contact bridge support and a spring-loaded locking element. The contact bridge support projects into the arc chamber and can be displaced in a direction of actuation. The contact bridge support can be locked by the locking element when the arc chamber is taken off. The locking element is configured as a lever that is swiveled about a swiveling axis which extends in perpendicular to the direction of actuation.

Abstract: A precision location system for a circuit breaker utilizing a phase cassette concept is disclosed. A cover plate is mounted to at least one of a plurality of single-pole units having a circuit breaker operating mechanism positioned thereon. The cover plate is configured to precisely align an actuator precisely located on the cover with the circuit breaker operating mechanism. The actuator trips a latch of the operating mechanism, thereby tripping the entire circuit.

Abstract: A switching device of low power consumption type, in which magnetic pole portions 37c of a pair of iron cores 37 constructing an electromagnet block 30 are individually arranged on the bottom face of a sealing case 41. The other end portions of the paired iron cores 37 are connected to each other by a yoke 39. As the electromagnet block 30 is magnetized and demagnetized, the two end portions of a moving iron member 63 of a contact mechanism block 50 are attracted by and leave the paired magnetic pole portions 37c of the iron cores 37.

Abstract: A circuit breaker (10, 12) includes a sensing circuit (48, 50, 52), a control circuit (46), an actuator (42), an operating mechanism, and an interlock mechanism (70, 94). The sensing circuit (48, 50, 52) is configured to generate the sense signal representative of a power signal flowing through a power circuit (54, 56, 58). The control circuit (46) has a frame (74, 76) and is configured to receive the sense signal and to provide a trip signal on a first terminal (68). The actuator (42) is external to the control circuit frame (74, 76) and has a second terminal (98) coupleable to the first terminal (68). The actuator (42) is configured to receive the trip signal on the second terminal (98). The operating mechanism is coupled to the actuator (42) and is configured to open and close the power circuit in response to actuation of a lever (36). The actuator (42) is configured to actuate the lever (36), in response to the trip signal.

Abstract: An electromagnetic switch includes an electromagnetic module and a contact module that is to be plugged into the electromagnetic module. The contact module includes a fixed contact member and a movable contact member that is pivoted to the fixed contact member so as to be rotatable relative to the fixed contact member between a first angular position for establishing a first circuit, and a second angular position for establishing a second circuit.

Abstract: A relay has a pair of fixed contacts, a pair of movable contacts adapted to be engaged and disengaged with the fixed contacts, and a solenoid having a coil and a plunger movable into and out of the solenoid, the plunger having an outer end operably connected to the movable contacts. The relay can maintain either of two stable positions in the absence of power to the coil, the two positions being a contact open or magnetically latched position and a closed or unlatched position. The invention is improved by a ball joint arrangement interconnecting the plunger and the movable contacts to enable wiping of the contacts on closure to remove thin film tarnish caused by oxidation of the Nobel metal contacts and to produce a torsional force which facilitates breaking of welds on opening. An insulator surrounds the movable contacts for cooling the arcing and magnetic fields are oriented with respect to the current in the contacts in a manner that applies a force on the current in the direction of the insulator.

Abstract: An electromagnetic switch includes an electromagnetic module and a contact module that is to be plugged into the electromagnetic module. The contact module includes a fixed contact member and a movable contact member that is pivoted to the fixed contact member so as to be rotatable relative to the fixed contact member between a first angular position for establishing a first circuit, and a second angular position for establishing a second circuit.

Abstract: A contact apparatus is provided having a permanent magnet disposed in a region where a fixing contact point is mounted to a fixing contact and a movable contact to which a movable contact point is mounted. An arc generated between both the contact points is moved in a lateral direction by the magnetic force of the permanent magnet and stretched. An arc-extinguishing member which is heated by the arc for generating arc-extinguishing gas is provided such as to surround the fixing contact point and the movable contact point.

Abstract: A relay (10), in particular for a starter for an internal combustion engine, is proposed. The relay (10) includes a relay coil (13) and a solenoid armature (22) which can be moved when full battery current flows to the relay coil (13). A contact member (37) can be actuated by the solenoid armature (22), whereby an operating lever (31) is situated on the contact member (37). It is provided that a coupling element (46) connects the operating lever (31) and the solenoid armature (22) with each other in a manner that allows them to slide with limits.

Abstract: The invention concerns an electromagnetic device of a switching apparatus comprising a mobile armature (20) rotating in a fixed frame (10) between two inactive and active positions, at least a permanent magnet (15, 15′) mounted in the fixed frame, at least a coil (24, 25) mounted in the mobile armature and control means (40) capable of delivering a control current (44) into the coil. The mobile armature is monostable; in inactive position, a lever (30) actuated by the mobile armature brings about the separation between the fixed contacts (31) and the mobile contacts (32) of the apparatus. In active position, the lever is released from the mobile armature and a spring (35) presses the mobile contact on the fixed contacts.

Abstract: A contact assembly for use in an electrical apparatus comprises a housing and a pusher movably mounted in the housing. A movable contact is supported on the pusher. A stationary contact is proximate the moveable contact in the housing. A return spring biases the pusher to a normal position. A contact spring operatively associated with the moveable contact forces the movable contact against a stop associated with the pusher. The contact spring and the return spring are of identical construction and are positioned in the housing so that force or torque produced by the return spring is greater than force or torque produced by the contact spring.

Abstract: The present invention relates to a switch device for opening and closing at least one electrical line, the device comprising:

Abstract: An electromagnetic switch includes a socket, an electromagnetic module, and a contact module that is to be plugged into the socket and the electromagnetic module. The contact module includes a fixed contact member and a movable contact member that is rotatable relative to the fixed contact member between a first angular position for establishing a first circuit, and a second angular position for establishing a second circuit. The fixed contact member is formed with conductive blade portions that can be plugged into the socket.