Abstract: An electromagnetic contactor including: an arc-extinguishing chamber in which a contact portion is disposed; a case having an arc-extinguishing chamber housing portion in which the arc-extinguishing chamber is housed; and an arc-extinguishing cover mounted on the case and configured to cover the arc-extinguishing chamber housing portion, wherein at least one of the case and the arc-extinguishing cover has a first engaging portion and a second engaging portion, the other has a third engaging portion configured to engage with the first engaging portion and the second engaging portion, and the arc-extinguishing cover is held to the case in either a first state in which the first engaging portion and the third engaging portion are engaged with each other or a second state in which the second engaging portion is engaged with the third engaging portion.

Abstract: A reclosing switch capable of stably opening and closing, including a bracket, a permanent magnet moving core, a driving member, a linkage assembly, a limit assembly, an opening assembly and a contact mechanism. The permanent magnet moving core is configured to provide a force to drive a magnet to move axially along the permanent magnet moving core. When closing the switch, the driving member applies a pressure to the linkage assembly to drive the limit assembly to limit driving member. The opening assembly is configured to provide a force to push the limit assembly to reset, so as to release the driving member. The magnet is provided with a transmission member for connection with the contact mechanism. The contact mechanism is configured to contact with contacts in the switch.

Abstract: Arc Fault Circuit Interrupter (AFCI), Ground Fault Circuit Interrupter (GFCI) or AF/GF circuit breakers which may optionally have relatively small or compact bodies that have shaped neutral busbars and/or load terminals with an arm that extends through a window of a current transformer in a circuit breaker housing. The neutral busbar and/or load terminal can have a rigid or semi-rigid shaped body with a first segment that extends through the window of the current transformer and a second segment that extends behind the first segment about a printed circuit board. A plug-on, pigtail or bolt-on neutral can engage an electrical pad of the neutral busbar.

Abstract: A mechanical latching device of an electromagnetic contactor eliminates a need to adjust a gap between portions mechanically preventing returning of a latch support. A latch support includes a protrusion protruding laterally and formed with a latch surface facing a released side. A rotating member has one end side rotatably supported and the other end side biased toward the protrusion. When the latch support is on the released side, an outer peripheral surface of the other end side contacts with a tip of the protrusion to allow the latch support to be displaced to a closed side. When the latch support is on the closed side, the other end side rotates according to a position of the latch support in a displacement direction, and a tip surface faces the latch surface to mechanically prevent the latch support from returning to the released side at plural positions along the displacement direction.

Abstract: Disclosed are an arc path formation unit and a direct current relay including same. An arc path formation unit according to an embodiment of the present disclosure comprises a plurality of magnet parts. The magnet parts, positioned adjacent to respective stationary contacts, are configured such that surfaces facing each other have different polarities. Also, some of the plurality of magnet parts are disposed at an incline relative to other magnet parts. Thus, magnetic field is formed by the plurality of magnet parts to obliquely pass by each of the stationary contacts. The electromagnetic force generated by the magnetic field is imparted in a direction away from the central region of a direct current relay. Accordingly, the generated arc moves in a direction away from the central region of the direct current relay, and thus damage to the direct current relay can be prevented.

Abstract: An electromagnetic relay including a housing, a cover, an adhesive which is interposed between a side part of the housing and an inner surface of the cover and which secures the housing and the cover, and a projection which is formed in at least one of the side part and the inner surface. The adhesive is filled in a gap between the side part and the inner surface.

Abstract: A 3-strand rotating field machine with a 2p-pole stator with winding teeth (Z), formed with a winding arrangement in tooth coil technology, has three winding strands (W1, W2, W3). The winding arrangement is formed from wound coil groups (G) with coils that are multiply interleaved. The partial coils (T) of the coil groups (G) are arranged so they concentrically enclose one another from inside to outside and surround two or more winding teeth (Z). The respective coil winding numbers in the grooves (N) between the winding teeth (Z) are provided. Thus, in each case a substantially equal occupancy of each groove (N) is provided with the same effective total conductor cross section of the coils per groove cross section.

Abstract: Shown are an arc path formation unit and a direct current relay including same. The arc path formation unit according to an embodiment of the present disclosure includes a plurality of magnet parts. The magnet parts form a magnetic field at the point at which each fixed contact is positioned. Each magnet part positioned adjacent to each fixed contact is formed so that opposite surfaces thereof facing each other have different polarities. An electric current flowing through the fixed contact and a movable contact, and the magnetic field generated by each magnet part form an electromagnetic force. The electromagnetic force moves away from the center of the direct current relay. Therefore, the generated arc moves in the direction of the electromagnetic force so as to move away from the center of the direct current relay. Thus, damage to the direct current relay can be prevented.

Abstract: An electricity meter comprising an electrically-controlled electromechanical switch is disclosed. The electromechanical switch comprises a rotary actuator comprising a generally-cylindrical permanent magnet rotor having a central axis, a stator comprising a closed stator core and first and second opposite stator poles inwardly-projecting from the closed stator core towards the rotor and first and second coils wound around the first and second stator poles respectively. The electromechanical switch comprises a switch comprising at least one pair of first and second contacts wherein the first contact is movable. The electromechanical switch comprises mechanical linkage between the rotary actuator and the movable contact(s) configured such that rotation of the rotor from a first angular position to a second angular position causes the switch to be opened, and rotation from the second angular position to the first angular position causes the switch to be closed.

Abstract: Disclosed are an arc path forming unit and a direct current relay comprising same. The arc path forming unit, according to one embodiment of the disclosure, comprises a plurality of magnet units disposed adjacent to each of fixed contacts. At least one of the plurality of magnet units disposed adjacent to each fixed contact is configured so that the side thereof facing the rest of the magnet units has a different polarity. Accordingly, an arc path is formed from each fixed contact in different directions from each other. Further, the arc path is formed so as to move away from the center part of the arc path forming unit. Accordingly, damage to components disposed in the center part may be prevented.

Abstract: Provided herein is an improved bi-stable relay. In some embodiments, the bi-stable relay assembly may include a housing, and a core assembly within the housing. The core assembly may include a coil support structure, a first coil and a second coil along a central section of the coil support structure, a first magnet at a first end of the coil support structure, a second magnet at a second end of the coil support structure, and a first electromagnetic shell component and a second electromagnetic shell component each extending between the first and second magnets.

Abstract: A contactor includes an housing having a cavity, fixed contacts received in the cavity having mating ends in the cavity, a movable contact movable within the cavity between a mated position and an unmated position and engaging the fixed contacts to electrically connect the fixed contacts in the mated position, and a coil assembly in the cavity operated to move the movable contact between the unmated position and the mating position. The contactor includes an arc suppressor in the cavity. The arc suppressor includes a multi-pole magnet having a first magnet having a first pole and a second magnet having a second pole. The first magnet is integrated with the second magnet in a unitary magnet body.

Abstract: An electromagnetic relay includes a first fixed terminal, a second fixed terminal, a movable contact piece, a movable member, a contact spring, and an electromagnet block. The movable member is configured to move in a moving direction including a first direction and a second direction. The contact spring biases the movable contact piece in the first direction. The electromagnet block includes a movable iron piece and moves the movable member in the moving direction. The movable contact piece and the contact spring are disposed in the movable member by insertion from a side opposite to a side where the electromagnet block is located. The movable member includes a first member constituted by a single member. The first member includes a press portion to be pressed by the movable iron piece in accordance with rotation of the movable iron piece, and a support portion configured to support the movable contact piece.

Abstract: A latching assembly for latching the moving conductor assembly of a circuit interrupter after an opening stroke includes a streamlined latch that omits components commonly prone to damage during latching operations in existing latching assemblies. The disclosed latching assembly comprises a fixed latch block, a driven latch rotatably coupled to the latch block, and a pivoting hammer with a square pin positioned to always be engaged with the driven latch. The latching assembly is structured to be engaged by a switch shaft once an opening stroke is initiated. When the latching assembly engages, the hammer square pin pushes the driven latch into engagement with a shelf formed in the switch shaft, which prevents the switch shaft from rebounding after the opening stroke. Rebounding is further prevented due to the hammer being structured to be biased toward the open state once the driven latch has engaged the switch shaft shelf.

Abstract: An electromagnetic mooring system (MMS) that includes a first object and a second object, at least one of which includes an electronic coupler configured to connect the first object with the second object. The electronic coupler comprises a pair of magnets, at least one of which is an electro permanent magnet (EPM), having a flux path. When the electronic coupler is in the ON states, the flux path moves towards the first or second object transferring heat from the first or second object to the second or first object, and when the electronic coupler is in the OFF state, the flux paths moves towards the EPM.

Abstract: A motor comprises: a shaft; a rotor coupled to the shaft and including a magnet; a stator disposed outside the rotor and including a coil and a stator core; a cover disposed on an upper side of the rotor; and a magnetic sensor disposed between the cover and the rotor, wherein the magnetic sensor is disposed on an upper side of the magnet, a surface of the magnetic sensor facing the rotor is disposed below the uppermost end of the coil, and the length of the rotor in the shaft direction is longer than the length of the stator core in the shaft direction.

Abstract: An anti-short circuit structure (10) of a high-capacity relay, the structure (10) comprising a housing assembly (100) and a pushing assembly (200). The housing assembly (100) comprises two static contacts (110), a first magnetically conductive block (120), a cover body (130), a transition block (160), and a yoke plate (140). The first magnetically conductive block (120) is disposed on an inner side surface of the top part of the cover body (130). The pushing assembly (200) comprises a fixing support (210), a stop piece (220), a movable reed (230), a second magnetically conductive block (240), an elastic member (250), and a push rod (260). The fixing support (210) comprises two fixing side arms (211) and a receiving plate (212). One end of the stop piece (220) is connected to the tail end of one fixing side arm (211), and the other end of the stop piece (220) is connected to the tail end of the other fixing side arm (211).

Abstract: A rotor for an electric machine includes pairs of magnets with a bridge region therebetween. Lamination that comprise the rotor may define openings in the bridge region between the magnets of each of the pairs. A clip may be installed in the openings and a bonding material may fill the remainder of the bridge region.

Abstract: An electromechanical actuator device comprises a fixed part, a first movable part and a second movable part each arranged to move with respect to the fixed part along an actuation direction. A conductive coil (20) is wrapped around a core (28) and is housed within the fixed part (4). The first movable part (6) is coupled to the fixed part (4) by at least one restorative component (10) such that, in a working position, the first movable part (6) is separated from the fixed part (4) along the actuation direction (22) by a first actuation distance (d1). The second movable part (8) is coupled to the first movable part (6) by at least restorative component (16) such that, in the working position, the second movable part (8) is separated from the first movable part (6) along the actuation direction (22) by a second actuation distance (d2).

Abstract: Circuit breakers with handles having at least one handle bearing pin that contacts an upper end portion of a moving arm and allows the arm to rotate to “OFF”, “ON” and “TRIP” positions, typically about 90 degrees of rotation.