A method of controlling the behavior of a latching relay includes receiving a configuration signal of either a first behavior signal or a second behavior signal, receiving a power status signal of either a powered or unpowered signal, receiving either a low-to-high or a high-to-low signal command signal, generating latching pulse in response to receiving a powered signal input as the power status signal and a low-to-high signal as the command signal, generating an unlatching pulse in response to receiving a powered signal input as the power status signal and a high-to-low signal as the command signal input, and generating an unlatching pulse in response to receiving the second behavior signal as the configuration signal and the unpowered signal as the power status signal.

Disclosed is a magnetic latching relay capable of accurately positioning a magnetic circuit, comprising a magnetic circuit portion and a base, the magnetic circuit portion comprising a yoke, an iron core, an armature, and a bobbin, the iron core is inserted into a through-hole of the bobbin, and the yoke comprises two yokes, and one side of each of the two yokes is connected to the iron core respectively at the both ends of the through-hole of the bobbin, and the armature is fitted between the other side of each of the two yokes, the magnetic circuit portion is mounted on the base, with the axis of the through-hole of the bobbin in a horizontal manner; in at least one of the two yokes, a positioning convex portion is further provided on the outward face of the side of the yoke, positioning grooves are formed in at least one side wall to be engaged with the positioning convex portion of the yoke, to realize the positioning of the magnetic circuit portions on the base in the horizontal direction perpendicular to the axis of the bobbin through hole.

Disclosed is a magnetic latching relay capable of accurately positioning a magnetic circuit, comprising a magnetic circuit portion and a base, the magnetic circuit portion comprising a yoke, an iron core, an armature, and a bobbin, the iron core is inserted into a through-hole of the bobbin, and the yoke comprises two yokes, and one side of each of the two yokes is connected to the iron core respectively at the both ends of the through-hole of the bobbin, and the armature is fitted between the other side of each of the two yokes, the magnetic circuit portion is mounted on the base, with the axis of the through-hole of the bobbin in a horizontal manner; in at least one of the two yokes, a positioning convex portion is further provided on the outward face of the side of the yoke, positioning grooves are formed in at least one side wall to be engaged with the positioning convex portion of the yoke, to realize the positioning of the magnetic circuit portions on the base in the horizontal direction perpendicular to the axis of the bobbin through hole.

An electromagnetic relay is provided with a housing; a first fixed contact terminal and a second fixed contact terminal secured to the housing; a movable contact accommodated in a chamber in the housing; a movable shaft with one end connected to the movable contact, and a solenoid configured to drive the movable shaft in a contact movement direction. A movable armature in the solenoid includes a groove that allows the movable shaft to be inserted from a direction intersecting with the contact movement direction. The other end of the movable shaft includes a first locking part and the groove in the movable armature includes a second locking part. The movable shaft and the movable armature engage in the contact movement direction with the engagement of the first locking part and the second locking part and move integrally in the contact movement direction.

An electromagnetic relay is provided with a housing; a first fixed contact terminal and a second fixed contact terminal secured to the housing; a movable contact accommodated in a chamber in the housing; a movable shaft with one end connected to the movable contact, and a solenoid configured to drive the movable shaft in a contact movement direction. A movable armature in the solenoid includes a groove that allows the movable shaft to be inserted from a direction intersecting with the contact movement direction. The other end of the movable shaft includes a first locking part and the groove in the movable armature includes a second locking part. The movable shaft and the movable armature engage in the contact movement direction with the engagement of the first locking part and the second locking part and move integrally in the contact movement direction.

An overload relay is disclosed in which a single operator coil is controlled for both tripping and resetting. A permanent magnet and a spring make the device bi-stable, so the coil may be unpowered when in the trip and reset states. Energization of the coil overcomes the magnet to allow tripping, while energization in an opposite direction adds to the magnet force to reset the device. An electromagnetic activation path overrides a mechanical activation path for electromagnetic tripping despite attempted manual resetting. The device may be pulse width modulated to reduce power consumption

A magnetic latching relay comprises a metal insertion portion of a contact portion and a slot of a base. The metal insertion portion is composed of two segments having different depth corresponding to the slot; when one segment is fitted to bottom wall of the slot, a preset gap is formed between the other segment and the bottom wall. The slot is formed by two segments having different thickness corresponding to the metal insertion portion; when two side walls of one segment of the slot are adapted to two sides of thickness of metal insertion portion, two side walls of the other segment of the slot and two sides of thickness of metal insertion portion respectively form a preset gap; one segment of metal insertion portions cooperates with the other segment of the slot, and the other segment of the metal insertion portion cooperates with one segment of the slot.

A magnetic latching relay comprises a metal insertion portion of a contact portion and a slot of a base. The metal insertion portion is composed of two segments having different depth corresponding to the slot; when one segment is fitted to bottom wall of the slot, a preset gap is formed between the other segment and the bottom wall. The slot is formed by two segments having different thickness corresponding to the metal insertion portion; when two side walls of one segment of the slot are adapted to two sides of thickness of metal insertion portion, two side walls of the other segment of the slot and two sides of thickness of metal insertion portion respectively form a preset gap; one segment of metal insertion portions cooperates with the other segment of the slot, and the other segment of the metal insertion portion cooperates with one segment of the slot.

A method of controlling the behavior of a latching relay includes receiving a configuration signal of either a first behavior signal or a second behavior signal, receiving a power status signal of either a powered or unpowerered signal, receiving either a low-to-high or a high-to-low signal command signal, generating latching pulse in response to receiving a powered signal input as the power status signal and a low-to-high signal as the command signal, generating an unlatching pulse in response to receiving a powered signal input as the power status signal and a high-to-low signal as the command signal input, and generating an unlatching pulse in response to receiving the second behavior signal as the configuration signal and the unpowered signal as the power status signal.

A system may include a relay device that includes armatures associated with phases of voltage signals. The system may also include relay coils, such that each relay coil may receive a respective voltage that magnetizes a respective relay coil, thereby causing the respective armature to move from a respective first position to a respective second position. The system may also include a control system that receive an indication that a fault condition is present, identify a first phase of the phases of voltage signals that is expected to be the next phase of the phases to cross zero, and send a signal to the relay device in response to identifying the first phase. The signal is configured to cause a first relay coil of the relay coils to energize or deenergize.