Abstract: A high power and high insulation performance relay for a solar photovoltaic inverter includes a base, a coil, an iron core, an armature part, a yoke iron, a movable spring and a stationary spring. The armature part includes a connecting piece as one side of the armature part, an armature as the other side of the armature part, and a plastic member; the armature and the connecting piece are connected with the plastic member respectively and are insulated and isolated; the plastic member is provided with at least one groove or rib; the stationary spring includes a stationary reed which includes a first coupling part for fixing a stationary contact, a second coupling part used as a lead-out pin, and a bending part between the both: the bending part is located outside of a base plate of the base when the stationary reed is mounted on the base.

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: Electrical switchgear which combines, connected electrically in series, a visible disconnect switch (operated by a main switch actuator) and a circuit breaker module (which may also be termed an interrupter) including circuit breaker contacts which are opened and closed by an electrically-activated magnetic actuator and capable of interrupting fault currents. The magnetic actuator is stable in either a breaker-closed state or a breaker-open state without requiring electrical current flow through the magnetic actuator. An interlock is provided such that, as the main switch actuator begins to move from its switch-closed position to its switch-open position, the breaker-closed state is destabilized to open the circuit breaker contacts. An interlock is also provided such that the circuit breaker contacts cannot close while the visible disconnect switch is open.

Abstract: Systems and methods provide a magnetic actuator having more than one air gap. After the trip unit is triggered, a first armature is accelerated to quickly close a first air gap and then mate with a second armature. The first and second armature then move toward a core to close a second air gap and reach the final combined armature position, causing a contact to open. A faster reaction time is provided, yet without increasing the number of turns of the trip coil winding, and provides a more efficient actuator.

Abstract: To provide a twin-type power electromagnetic relay having high reliability, having a reduced size and low mounting height, and suitable for surface mounting. By inserting projections provided in a coil spool, which is a component constituting an electromagnetic relay block, into projection insertion holes 5a and 5b formed in a base plate 5, two electromagnetic relay blocks 4A and 4B are arranged side by side on the base plate 5 such that their central axes are nearly parallel to the base plate. A base protective wall 5c is provided on the base plate 5, and a coil wire winding terminal portion of a spool is covered by the base protective wall and by a fixed terminal protective wall on the fixed terminal block when assembled, preventing foreign matters such as flux from entering between the contacts from the winding terminal portion.

Abstract: A vehicle power system includes an electrical power source, an electrical bus, and a contactor electrically connected with the electrical power source and electrical bus. The contactor includes first and second poles, dual plungers each operatively associated with one of the first and second poles, and an electromagnetic coil configured to cause at least one of the dual plungers to move if the coil is energized.

Abstract: To provide a twin-type power electromagnetic relay having high reliability, having a reduced size and low mounting height, and suitable for surface mounting. By inserting projections provided in a coil spool, which is a component constituting an electromagnetic relay block, into projection insertion holes 5a and 5b formed in a base plate 5, two electromagnetic relay blocks 4A and 4B are arranged side by side on the base plate 5 such that their central axes are nearly parallel to the base plate. A base protective wall 5c is provided on the base plate 5, and a coil wire winding terminal portion of a spool is covered by the base protective wall and by a fixed terminal protective wall on the fixed terminal block when assembled, preventing foreign matters such as flux from entering between the contacts from the winding terminal portion.

Abstract: An electromagnetic relay system is constituted by containing an electromagnetic relay arranged in a case and including a coil, a movable contact and a plurality of fixed contacts, a positive terminal and a negative terminal formed to project from the case, and load terminals formed to project from the case and connectable to a motor. An electric current flowing in the motor is controlled by controlling an electric current flowing in the coil. A ground line extended from the coil is connected to the negative terminal via a coil spring in the case.

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 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 complex electromagnetic relay including a plurality of relay structures configured respectively as relays independent of each other, each relay structure including an electromagnet assembly and a contact section acting to open or close in accordance with an operation of the electromagnet assembly; and a housing accommodating the relay structures in a mutually inverted orientation with contact sections of the relay structures being located alternately at opposing sides. The electromagnet assemblies in the relay structures are provided individually with bobbins supporting coils. The housing includes an enclosing wall enclosing the relay structures in an envelope-like manner and a partition wall arranged between the relay structures disposed side-by-side to separate the relay structures from each other. The bobbins of the electromagnet assemblies are fixedly attached to the enclosing wall as well as to the partition wall.

Abstract: An electromagnetic relay apparatus, which is improved in miniaturization, performance, assembly accuracy, cost reduction, productivity, and reliability. A plurality of electromagnetic relays, each having an NO contact that is closed by applying exciting current to a coil and an NC contact that is closed when the excitation current is not passed through the coil, are arranged in line, one diagonally opposite to the next, on a base so that the respective NO/NC contacts of adjacent electromagnetic relays are located in diagonally opposed positions in substantially point symmetrical relation. The electromagnetic relay includes an electromagnetic block having a couple of moving contacts, a first stationary contact and a second stationary contact both being connectable to external wiring, which are composed of uniform parts or components.

Abstract: Isolated planar conductive structures on separated layers of a PCB provide the normally-open, common, and normally-closed components of an electromechanical relay circuit to minimize inductive area. The isolated planar configuration reduces coupling of relay contact-noise currents to nearby sensitive circuits, and minimizes coupling EMI energy from nearby logic or microprocessor circuits to the relay contact circuits.

Abstract: A solenoid including a single coil of windings, an immovable stator, and opposed first and second armatures defining an air gap therebetween. A driving circuit energizes the coil to cause the first and second armatures to simultaneously move toward each other from respective first positions to respective second positions.

Abstract: An electromagnetic relay having a double armature structure comprises: an electromagnet; a pair of armatures which are individually rotatably arranged at the right and left positions of the electromagnet and are symmetrically rotated by the attractive forces of the electromagnet against a return spring; and a pair of contact mechanisms which are closed or opened by the rotation of the armatures. The electromagnet has a pair of iron cores to respectively attract the pair of armatures, or has a single iron core and respectively adsorbs the pair of armatures at both ends of this iron core. With this relay, even if one of the contact mechanisms was not open due to the melt-bonding, the other is opened.

Abstract: There are arranged at a magnetic trigger for a selectively operative switch, a plunger-type armature, a pivotable armature and a tripping device. A plunger of the plunger-type armature acts directly upon a movable contact of a pair of contacts and the plunger-type armature is actuated using a magnetic coil or winding when the current flowing through the magnetic coil at least corresponds to a predetermined threshold current for opening the contacts. A pivotable armature is actuated by the plunger-type armature and redirects the magnetic return flux. The tripping device acts upon a switch lock mechanism and is switched into or out of the magnetic return flux by the plunger-type armature. The degree of overlap between pole shoes of the pivotable armature and of the tripping device is preselectable by an adjusting screw. There is thus realized a current-dependent, selective tripping of the switch lock mechanism.

Abstract: A relay includes two armatures each having a contact spring and a contact piece secured thereto which interacts with the respective cooperating contact element. The two movable contact pieces are electrically connected by a stranded copper conductor so that a series connection of the two contacts is formed. The series connection can be interrupted twice by the two armatures which switch independently of one another so that a reliable opening of the circuit is assured even if one of the contacts fuses. The relay is particularly useful for safety circuits such as in motor vehicles.

Abstract: A starter for a reversible motor has a single outer casing and one operating switch for controlling the forward or reverse rotation of the motor. The starter uses only ten pairs of electric contacts instead of the twenty pairs of contacts in a conventional starter. A safety means is provided which can turn off the undesired actuation circuit of the electromagnet. And another important feature of the starter is an adjustable screw with a coil spring sleeved thereon to assure the right movable contacts being closed in the starter without closing undesired contacts.

Abstract: A circuit breaker is disclosed wherein two breakers are arranged in mirror image relation having their respective contacts facing each other and abutting alternately either a common contact carrier of U-shaped configurations while double contact is prevented mechanically. In an alternative version the stationary contacts are arranged for an axial operation change. The arrangement permits reduction in internal connections as well as in space requirement without loss in function as compared with known multiple circuit breaker units.

Abstract: In an electromagnetic relay, an armature block serving to actuate contact springs includes a pair of armatures and a permanent magnet disposed therebetween to magnetize the armatures to opposite polarities. Pole ends of a yoke carrying the excitation flux created by the relay coil extend between free ends of the armatures. The armature block is suspended by means of a resilient arm integrally formed with the block at one side thereof and having its outer end fixed to a bearing portion, so that a rocking motion of the armature block is achieved by a flexing motion of the resilient arm.

Abstract: A relay coil is fixed in a housing adjacent a pair of vertically spaced, stationary contacts, which are electrically insulated from one another, and which have associated terminals that project exteriorly of the housing. A pair of resilient switch arms project from a stationary metal plate in the housing transversely across one end of the armature coil in spaced, parallel relation to each other. At their ends remote from the metal plate the switch arms carry a pair of contacts which register with the stationary contacts in the housing. An armature member is secured to and extends along the inside surface of each switch arm in confronting relation to the adjacent end of the armature coil.

Abstract: Relay having contact springs operated by a shifting member, which is mechanically held in one or two end positions. The shifting member is shiftable by one or two magnetic drive systems. It is provided with two over-center springs at one end or at each end. The over-center springs bear at one end on the movable shifting member and on the other end on a fixed point, which is connected to the body of the relay. Monostable relays are provided with a return spring.