A fuse includes a body, a first conductive terminal coupled with a first end of the body, and a second conductive terminal coupled with a second end of the body. The body, the first conductive terminal, and the second conductive terminal define an exterior of the fuse. The fuse also includes an interruption assembly including a fusible element. The fusible element includes carbon fiber, is disposed on a conductive path between the first conductive terminal and the second conductive terminal, and is configured to break when a current through the fusible element exceeds a predetermined current.

Provided is a spring drive cam for a spring drive of a circuit breaker including a disc-like shape configured for rotating around a rotation axis in the spring drive, whereby the disc-like shape comprises a radius (R) that changes depending on an angle (α) of the radius (R) relative to a base angle (α0), and whereby a rate (dR/dα) defined by a change of the radius (R) per change of the angle (α) is ≤0.3 mm/°.

A longitudinal switch for an electric contact locking and position changing system was designed to position securely the movable switch elements (7), which are urged by springs (5) and a rack (1) and toothed gear (8) mechanism for moving a vertical shaft (9), acting upon fixed elements (contacts) (16) of an electrically insulating rail surface (15). Positions are changed by turning a control button (39) and the toothed gear (8), causing the vertical shaft (9) to rotate, thus moving the rack (1) and causing the movable elements (7) to slide on the semicircular surface (17) of the fixed elements (16), overcoming the force of the springs (5) and compressing them. Once the gap between the fixed elements (16) is located, the springs (5) push back, keeping the movable elements (7) locked and ensuring the effective electric contact with the electric current passing through these points of contact.

A gas circuit breaker includes a breaking unit tank incorporating a fixed electrode and a movable electrode, a spring operation device including a breaking spring and a closing spring and configured to move the movable electrode, and a mechanism unit configured to couple the movable electrode side and the spring operation device side and transmit power received from the spring operation device to the movable electrode. The spring operation device is supported by a frame. The frame is fixed to a rear plate provided in a mechanism unit frame of the mechanism unit. A breaking spring case and a closing spring case of the spring operation device are fixed to pedestals via a plate member 38 and a support section 7.

A three-position vacuum switch for realizing external grounding of a load side by using a connected busbar overcomes the problems in the prior art that load side grounding is realized depending on the opening and closing of a vacuum arc extinguishing chamber, a misoperation easily occurs because an operator cannot see the grounding situation intuitively, and when an operating mechanism machine has a problem, it needs to have a grounding line plugged in externally, which cause inconvenient operations and huge safety risks, characterized in that a connected busbar is hinged on front and back sides of a load socket, the vacuum arc extinguishing chamber is connected to the connected busbar by using a pin, the connected busbar is electrically connected to a grounding socket to realize primary grounding, and the vacuum arc extinguishing chamber is electrically connected to the grounding socket to realize auxiliary grounding.

An electromagnetic relay according to the present disclosure includes an excitation coil generating a magnetic field during energization, a movable core driven by the magnetic field generated by the excitation coil, a movable element including a movable contact and moving to follow the driven movable core, a plurality of stationary terminals each including a stationary contact that contacts the movable contact during the energization of the excitation coil, a stationary yoke formed of a magnetic material and supported by at least one of the plurality of stationary terminals, and a movable yoke formed of a magnetic material and arranged to face the stationary yoke, the movable yoke being in contact with the movable element and moving together with the movable element. Since the stationary yoke is supported by the stationary terminal, increase in temperature of the stationary terminal can be limited.

An electromagnetic relay includes a base, an electromagnetic block disposed on an upper surface of the base, a movable iron piece that rotates based on excitation/non-excitation of the electromagnetic block, a movable contact piece that rotates integrally with the movable iron piece, a movable contact fixed to a free end of the movable contact piece, a fixed contact disposed so as to come into or out of contact with the movable contact in association with rotation of the movable contact piece, and a magnetic field generation unit disposed so as to attract an arc generated between the movable contact and the fixed contact in a direction that, as seen from the fixed contact, is opposite to the movable contact and the base.

An electromagnetic relay includes a base, an electromagnet block mounted on an upper surface of the base, a movable iron piece configured to be rotatable based on excitation and non-excitation of the electromagnet block, a movable contact piece configured to be rotatable integrally with the movable iron piece, a movable contact fixed to a free end portion of the movable contact piece, and a fixed contact fixed to a fixed contact terminal, and disposed so as to be separable from and contacted with the movable contact along with rotation of the movable contact piece. A permanent magnet configured to induce an arc generated between the movable contact and the fixed contact in a predetermined direction is housed in a recessed portion formed on a lower surface of the base in a direction toward a side opposite to the movable contact as viewed from the fixed contact terminal.

An electromagnetic relay includes a fixed contact, a movable contact corresponding to the fixed contact, a movable element that retains the movable contact and moves in a contacting direction and a separating direction relative to the fixed contact, an axial core coupled to the movable element, a movable core coupled to the axial core to move in the contacting direction and the separating direction relative to a movement of the axial core, a driving part that drives the movable core in the contacting direction, an urging part that exerts force to the axial core in the separating direction, and a constraining part that constrains the relative movement of the axial core in the separating direction.

A switching operator control arrangement for a motor vehicle. A movable operating area interacts with a shifting device in such a way that the operating area can be moved in a substantially linear manner over at least one distance from a neutral position to an operating position. The operating position can be in the form of a switching position in such a way that the operating area has a switching action on a switching element, a sensor or the like in the switching position. The shifting device includes a rocking lever arrangement which can move in parallel.