In an embodiment a switching device includes at least one stationary contact and a movable contact movable from a first switching state to a second switching state by a magnetic armature, wherein the magnetic armature has a spring configured to reset the movable contact from the second switching state to the first switching state, and wherein the spring has a first spring region with a first spring constant and a second spring region with a second spring constant which is greater than the first spring constant.

A first yoke is arranged in a contact direction with respect to a movable contact piece. A second yoke is arranged in an opening direction with respect to the movable contact piece. The first yoke and the second yoke are configured to generate a magnetic force that attracts the first yoke and the second yoke to each other when the movable contact contacts the fixed contact and is energized. The first yoke and the second yoke are arranged not to contact each other so that the movable contact piece can contact the fixed terminal in a state where the movable contact and the fixed contact are lost.

A first yoke is arranged in a contact direction with respect to a movable contact piece. A second yoke is arranged in an opening direction with respect to the movable contact piece. The first yoke and the second yoke are configured to generate a magnetic force that attracts the first yoke and the second yoke to each other when the movable contact contacts the fixed contact and is energized. The first yoke and the second yoke are arranged not to contact each other so that the movable contact piece can contact the fixed terminal in a state where the movable contact and the fixed contact are lost.

An adjustable trip assembly is for an electrical switching apparatus. The electrical switching apparatus includes a housing, separable contacts and an operating mechanism for opening and closing the separable contacts. The adjustable trip assembly includes a load conductor, a magnetic assembly comprising a magnetic member and an armature movably coupled to the magnetic member, and a calibration assembly comprising a calibration bracket cooperating with the armature, and an adjustment mechanism being adjustable to move the calibration bracket and thereby adjust the position of the armature with respect to the magnetic member to calibrate the magnetic assembly. The magnetic assembly further includes a biasing element that biases the armature away from the magnetic member.

An adjustable trip assembly is for an electrical switching apparatus. The electrical switching apparatus includes a housing, separable contacts and an operating mechanism for opening and closing the separable contacts. The adjustable trip assembly includes a load conductor, a magnetic assembly comprising a magnetic member and an armature movably coupled to the magnetic member, and a calibration assembly comprising a calibration bracket cooperating with the armature, and an adjustment mechanism being adjustable to move the calibration bracket and thereby adjust the position of the armature with respect to the magnetic member to calibrate the magnetic assembly. The magnetic assembly further includes a biasing element that biases the armature away from the magnetic member.

An electrical storage system includes an electrical storage device, a load, a positive electrode line, a negative electrode line, a first relay, a second relay, a third relay, a drive circuit and a controller. The drive circuit includes a coil, a first power line, a second power line, and a sensor. The first power line includes a first switch element and a second switch element connected in series with each other. The second power line includes a second resistive element and a third switch element connected in series with each other. The drive circuit is configured to cause both the second and third relays and the first relay to operate at different timings. The controller is configured to control operation of the drive circuit. The controller is configured to output a control signal for setting each switch element to the non-energized state, and determine whether any one of the switch elements has a failure in the energized state on the basis of the output signal of the sensor.

A relay includes an electromagnet apparatus, a first transmission part, a second transmission part, a first elastic part, a first movable contact, a second static contact, a second elastic part, a first static contact, and a second movable contact. The first movable contact, the second static contact are both disposed on the first elastic part. The second movable contact and the first static contact are both disposed on the second elastic part. The first movable contact is in contact with or separated from the first static contact, and the second movable contact is in contact with or separated from the second static contact. When the first movable contact is in contact with the first static contact, the second movable contact is in contact with the second static contact, the first movable contact and the first static contact are in parallel with the second movable contact and the second static contact.

invention relates to a relay, having an electromagnetic drive with a field coil arranged around an iron core which defines a plane, and a yoke. The electromagnetic drive works together with a movable armature which can switch a movable electrical contact via an actuating arrangement. The relay is accommodated in a housing, wherein an intermediate base and/or partition is included between the electromagnetic drive and the contact. The electromagnetic drive is arranged on one side of the partition, and the movable electrical contact is arranged on the other side of the partition. The partition has an opening through which the mechanical actuation of the contact is carried out. Because the armature is pivotable about an axis of rotation perpendicular to the plane of the iron core, the relay can have a lower constructed height than a conventional relay.

invention relates to a relay, having an electromagnetic drive with a field coil arranged around an iron core which defines a plane, and a yoke. The electromagnetic drive works together with a movable armature which can switch a movable electrical contact via an actuating arrangement. The relay is accommodated in a housing, wherein an intermediate base and/or partition is included between the electromagnetic drive and the contact. The electromagnetic drive is arranged on one side of the partition, and the movable electrical contact is arranged on the other side of the partition. The partition has an opening through which the mechanical actuation of the contact is carried out. Because the armature is pivotable about an axis of rotation perpendicular to the plane of the iron core, the relay can have a lower constructed height than a conventional relay.

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.