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 includes a base, a magnetic circuit portion, a pushing card and a contact portion; the base is provided with a first blocking wall to divide the base into an upper cavity and a lower cavity, the magnetic circuit portion and the contact portion are installed in the upper cavity and the lower cavity respectively; an iron core, two yokes and a magnetic steel of the magnetic circuit portion are formed an E-shaped magnetic conductive structure with a 90 degrees side turn; the middle position of an armature is rotatably supported above the magnetic steel, two ends of the armature respectively correspond to the tops of the two yokes; an upper end of the pushing card is connected to one end of the armature, and a lower end of the pushing card is connected to a free end of a movable spring of the contact portion.

The invention relates to an electromagnetic relay (1), more particularly a safety relay (1). This has a main body (10) and a coil system (20, 120) located thereon, the coil system (20, 120) having a coil (24, 124) and a yoke (25, 125) which extends through the coil (24, 124) along a winding axis (WA) of the coil (24, 124). An armature (30, 130) for the relay (1) is located next to the coil (24, 124) and mounted such that it can pivot about an armature bearing axis (AA, AA) and has pole shoes (33a, 33b, 33c, 33d, 133a, 133b) for magnetically coupling with the yoke (25, 125) of the coil system (20, 120). The relay (1) also comprises a contact system (50) having at least two contact springs (51, 53), wherein each spring movement plane (FB) of the contact springs (51, 53) extends across the winding axis (WA) of the coil (24, 124), preferably at a substantially right angle. At least two actuators (36, 37, 41, 42) are located on the armature (30, 130), which actuators (36, 37, 41,42) are allocated to the contact springs (51, 53) in order to actuate same and which actuators (36, 37, 41, 42) extend radially outwards on the armature (30, 130) with respect to the armature bearing axis (AA, AA) in a longitudinal direction (AL) of the armature (30, 130), wherein the radially outermost ends of the two actuators (36, 37, 41, 42) are farther away from the armature bearing axis (AA, AA) than the pole shoes (33a, 33b, 33c, 33d, 133a, 133b) of the armature (30,130).

The invention relates to an electric switch that serves to switch on and/or off electric devices and for this purpose has a contact system in the switch housing. By means of a manual actuating element or a remotely controlled actuator, a switching operation can be effected.

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 relay includes an electromagnetic drive unit with a rotatable armature and a yoke. The rotatable armature includes a first magnetic contact region and the yoke includes a second magnetic contact region. The first magnetic contact region is in touch with the second magnetic contact region in a first state of the relay. The relay further includes at least one immovable first electric contact and a moveable contact arm with at least one second electric contact. The first electric contact contacts the second electric contact in the first state. The rotatable armature and the moveable contact arm are positioned together on a shaft and the shaft is embodied as a torsional element.

A relay, includes a base; a contact part disposed on the base and including two sets of movable contact parts, each set of the movable contact parts including a movable contact piece, a movable contact unit and a static contact unit, stiffnesses of two movable contact pieces are difference; a push rod assembly including a first push rod and a second push rod respectively connected to the two movable contact pieces; and a magnetic circuit part arranged on the base for driving the movements of the first push rod and the second push rod in an opposite directions, so as to drive the two movable contact pieces to come into contact or move away from each other, achieving contact or separation between the static contact unit and the movable contact unit.

A fixing frame for fixing at least a permanent magnet of a magnetic latching relay includes a body having shaft hole for installing a rotating shaft of a permanent magnet; at least one longitudinal limit part arranged on the body including two vertical limit columns arranged oppositely along a longitudinal direction, two vertical limit columns clamp a yoke of the magnetic latching relay and fit with the yoke without clearance in the longitudinal direction; and at least one transverse limit structure arranged on the body and fitted with a transverse fit structure of the magnetic latching relay without clearance in a transverse direction; wherein the transverse direction is perpendicular to the longitudinal direction.

A magnetic latching relay includes a base having a receiving chamber with a first sidewall extending in a longitudinal direction and a second sidewall extending in a transverse direction, and connected with the first sidewall; a coil assembly in the receiving chamber in the transverse direction and having a first end adjacent to the first sidewall; and a fixing frame on the base. The fixing frame has a first side close to the coil assembly, and is in sealed contact with the first end of the coil assembly, and a side of the fixing frame facing the first sidewall is in sealed contact with the first sidewall, forming a first glue dispensing port surrounded by the first sidewall, the second sidewall, the first end of the coil assembly, and the fixing frame.

A relay includes a contact part including two sets of movable contact parts, each set including a movable contact piece, a movable contact unit, a static contact unit and a movable contact leading-out piece, at least one movable contact leading-out pieces is provided with an avoidance notch; the static contact unit having the avoidance notch including at least two static contacts; and a push rod assembly including a first and second push rods, the first push rod being movably passing through the avoidance notch of one of the movable contact leading-out pieces and connected with the movable contact piece of the other the movable contact part; the second push rod being connected with the movable contact piece of the movable contact part.