The electromagnetic relay includes a contact unit, an electromagnet, an armature unit, and a base. The contact unit includes a fixed contact and a movable spring including a movable contact. The armature unit is movable in accordance with excitation of the electromagnet to allow the movable contact to move between a closed position in contact with the fixed contact and an open position away from the fixed contact. The base holds the contact unit and the electromagnet on a certain surface side. The movable contact is placed between the base and the fixed contact in an arrangement direction in which the base and the electromagnet are arranged. The armature unit includes a press part which causes movement of the movable contact by applying a pressing force to a certain surface facing the fixed contact, of the movable spring.

A device includes an armature, a coil, and a circuit. The armature is configured to move between a close position that electrically couples the armature to a contact and an open position that is not electrically coupled to the contact. The coil is configured to release a voltage configured to de-magnetize the coil, thereby causing the armature to move from the close position to the open position. The circuit is configured to provide reverse driving current to the coil during a period of time when the armature moves from the close position to the open position.

An electromagnetic relay includes a casing, a coil set, a rotating bridge, first and second extension arm, first and second switch conductive plate assemblies, and first and second gripper modules. The novel design of the rotating bridge allows the first and second switch conductive plate assemblies to have synchronous contact or disconnection and provide sufficient and appropriate force to a first movable contact and a first fixed contact of the first switch conductive plate assembly and a second movable contact and a second fixed contact of the second switch conductive plate assembly to achieve a stable conduction and ensure a reliable separation for a disconnection, so as to achieve the effects of reducing the excessive change of resistance during operation, preventing high temperature caused by incomplete contacts, and improve application performance.

An auxiliary contact system of a contactor includes an auxiliary movable contact, an auxiliary static contact corresponding to the auxiliary movable contact, and a rotation member configured to be rotatable between a first position and a second position. In the first position, a main movable contact of the contactor is driven by the rotation member to an electric contact position in which the main movable contact contacts a main static contact and the auxiliary movable contact is in the electric contact position contacting the auxiliary static contact. In the second position, the main movable contact of the contactor is driven by the rotation member to an electric separation position where the main movable contact is separated from the main static contact and the rotation member pushes the auxiliary movable contact to the electric separation position separated from the auxiliary static contact.

A relay structure includes a case; a magnetoelectric assembly; a first leg and a second leg assembled with two ends of the magnetoelectric assembly, respectively; a magnetic conduction assembly having an end electrically connected to the magnetoelectric assembly in a normal condition, and when the magnetoelectric assembly produces electromagnetism, the magnetic conduction assembly is magnetically attracted to and abutted with other end of the magnetoelectric assembly; a driving plate assembled with the top surface of the magnetic conduction assembly; an armature assembly including conductive plates stacked with each other, and having an end bonded with a third leg, and other end extended toward the driving plate and formed with a conductively connecting member, a top end of the driving plate is inserted through the armature assembly; a fourth leg having an end disposed inside the case and formed with a contact member above the conductively connecting member.

A latching relay includes first and second coils and a common plunger operatively connected therebetween such that activation of the first coil moves the plunger in a first direction and activation of the second coil moves the plunger in a second direction, opposite the first direction, the first and second directions lying in a first plane. A limit switch includes a common contact and first and second coil contacts, where a position of the common contact is alternately switched between electrical connection to either the first or second coil contact based on a position of the plunger. A slide toggle accessible by a user is operatively connected to the plunger and slideable together with the plunger such that actuation of the slide toggle by the user causes manual actuation of the plunger. The slide toggle is slideable in a second plane parallel to the first plane.

An electromagnetic relay includes a fixed contact holder, a moving contact holder, an electromagnetic device, and a magnet. The fixed contact holder extends in a predetermined direction and is provided with a fixed contact. The moving contact holder also extends in the predetermined direction, and is provided with a moving contact. The magnet is arranged perpendicularly to an opening/closing direction of the fixed contact and the moving contact. A stretch space in which an arc generated between the fixed contact and the moving contact is stretched is provided, in the predetermined direction, beyond respective tips of the fixed contact holder and the moving contact holder. The stretch space also faces a surface of the fixed contact holder and a surface of the moving contact holder.

A contactor with a rotary actuation system, the contactor including a plurality of switching devices configured to switch a plurality of electrical circuits, a plurality of cam followers each operably coupled to one of the switching devices, wherein each cam follower is configured to actuate a switching device, and a cam mechanism, the cam pivotally attached to a point rotation, the cam having plurality of lobes about its perimeter, the cam in operable communication with each cam follower such that upon rotation of the cam mechanism, each cam follower engages a lobe of the plurality of lobes, it causes each cam follower to actuate the respective switching device. The contactor also includes an actuator connected to the cam, the actuator responsive to a control current and operable to rotate the cam and a controller, the controller operable to supply a control current the actuator.

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.

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.