Various high voltage systems may benefit from a suitable relay system. For example, a relay box may be provided with a shock and vibration resistant arrangement including a sealed coil box within the sealed relay box. For example, an apparatus can include a coil box containing coils, inside pole pieces, and permanent magnets, wherein the coils, inside pole pieces, and permanent magnets can be configured to actuate an armature assembly external to the coil box. The apparatus can also include outside pole pieces configured to move a relay armature of the armature assembly responsive to energizing of the coils. Moving the relay armature can include overcoming a latching of at least one of the permanent magnets.

Various high voltage systems may benefit from a suitable relay system. For example, a relay box may be provided with a shock and vibration resistant arrangement including a sealed coil box within the sealed relay box. For example, an apparatus can include a coil box containing coils, inside pole pieces, and permanent magnets, wherein the coils, inside pole pieces, and permanent magnets can be configured to actuate an armature assembly external to the coil box. The apparatus can also include outside pole pieces configured to move a relay armature of the armature assembly responsive to energizing of the coils. Moving the relay armature can include overcoming a latching of at least one of the permanent magnets.

A contact device including a fixed contact member having a fixed contact; and a movable contact member which includes a movable contact and is movable between a position where the movable contact is in contact with the fixed contact and a position where the movable contact is away from the fixed contact, a first contact member which is one of the fixed contact member and the movable contact member further including a recess in a surface to which a first contact of the first contact member is provided. The first contact protrudes toward a second contact of a second contact member which is another of the fixed contact member and the movable contact member, and a periphery of the recess at least partially surrounding a periphery of the first contact in a surface perpendicular to a protruding direction of the first contact.

Disclosed in the present disclosure is a relay, relating to the technical field of switch devices, including a fixed base, a stationary contact, a movable contact plate, a push rod, an electromagnetic assembly, a reset elastic member, an elastic assembly, a first magnetically guiding sheet, and a second magnetically guiding sheet; the first magnetically guiding sheet is provided on a side of the movable contact plate facing the stationary contact, the second magnetically guiding sheet is provided on a side of the movable contact plate away from the stationary contact, both the first magnetically guiding sheet and the second magnetically guiding sheet can be magnetized by a current passing through the movable contact plate, the second magnetically guiding sheet and the first magnetically guiding sheet can form a closed magnetic loop.

The contact device includes: a fixed contact member including a fixed contact; and a movable contact member including a movable contact. The movable contact member is movable between a position where the movable contact is in contact with the fixed contact and a position where the movable contact is away from the fixed contact. The movable contact member further includes a protrusion which protrudes from a face to which the movable contact is provided, in a direction same as a protruding direction of the movable contact.

The invention specifies a magnet armature for a contactor, a contactor, and a method for switching a contactor. The magnet armature allows the risk of the contacts of a contactor sticking to be reduced and to this end comprises a first spring element with a first stiffness and a second element with a second stiffness. The first spring element is deformed during the movement from an inoperative position to a central position. The second spring element is deformed during the movement from the central position to an end position.

An electromagnetic relay includes an electromagnet device, a contactor, and a trip device turning the contactor into an open state in which the contactor opens when an abnormal current flows. The electromagnet device includes a first excitation coil, a fixed element, first and second movable elements, and a permanent magnet. The contactor includes a fixed contact and a movable contact. In the electromagnetic relay, while the permanent magnet causes the first movable element to attractingly contact the second movable element, the fixed element attracts the first movable element due to a magnetic flux generated by the first excitation coil so as to move the second movable element together with the first movable element from a normal position to an attracted position. In the contactor, the movable contact moves, as the second movable element moves, so as to switch between a closed state in which the movable contact contacts the fixed contact and the open state in which the movable contact is removed from the fixed contact. The contactor is turned into the closed state when the second movable element is located at the attracted position. The trip device includes a second excitation coil connected in series to the contactor and a spring for acting a force on the second movable element in a direction away from the first movable element.

A bistable relay and a bistable actuator are provided. The bistable actuator includes a magnetic latching mechanism and an electromagnet. The magnetic latching mechanism includes a rotation shaft, a pillar-shaped permanent magnet, a columnar hollow magnetic conductor and two shells, and operates between a first and second stable states. The columnar hollow magnetic conductor surrounds the pillar-shaped permanent magnet wrapping the rotation shaft, and maintains a gap with the pillar-shaped permanent magnet. The electromagnet is connected to the columnar hollow magnetic conductor for driving the pillar-shaped permanent magnet to rotate, so as to switch the magnetic latching mechanism to the stable state. During a process that the magnetic latching mechanism is switched to the stable state, the rotation shaft rotates synchronously along with the magnetic latching mechanism to drive an impact system to move relative to a contact system, so as to contact or disconnect the contact points.

Some embodiments of the present disclosure relate to a relay capable of preventing a chattering phenomenon, and capable of solving an unbalanced contact state occurring when contacts come in contact with each other. The relay may include: a stationary contact having a first stationary contact and a second stationary contact; a movable contact moveable to a first position to contact the first stationary contact, and a second position to be separated from the first stationary contact; a conductive connector configured to always electrically connect the movable contact with the second stationary contact; and a driving mechanism configured to provide a driving force to the movable contact such that the movable contact is moveable to the first position or the second position.

A method is disclosed for operating an electric switch having at least one movable switch contact, movable by a movable armature of an electromagnetic actuator to switch the switch on and off, a spring device arranged between the movable switch contact and the armature and, in order to move the armature from a starting position to an armature end position, a magnetic flux being generated in an exciter winding of the actuator by an exciter current being fed into the exciter winding. According to an embodiment and taking into account a position data set which specifies the respective armature position as a function of magnetomotive values and flux values, an armature positioncalled the contact strike armature position belowis determined at which the switch contacts meet each other during the closing operation, before the armature reaches the armature end position.