9results about "Switches with electrothermal release" patented technology

A circuit breaker includes a housing, a first trip mechanism, and a second trip mechanism. The first trip mechanism includes a first plunger selectively spring biased to a first plunger extended position from a first plunger retracted position. The second trip mechanism includes a second pin supported on the first plunger and configured to be driven by the first plunger to a second pin extended position that follows the first plunger extended position. A second lever fixed with respect to the second pin is configured to be driven by the second pin to a second lever extended position. A second plunger is selectively spring biased to a second plunger extended position, and when the second pin is driven to the second pin extended position, the second lever follows the second pin to the second lever extended position to allow the second plunger to be in the second plunger extended position.

A circuit breaker is provided and includes: a housing; an electromagnetic assembly disposed in the housing and including an electromagnetic coil and a movable core, wherein the movable core is adapted to move along a first direction when the electromagnetic coil is energized; a movable member disposed in the housing and connected to the movable core; a movable contact assembly disposed in the housing, interacting with the movable member and being adapted to move under driving of the movable member; a switch assembly disposed on the housing and including a microswitch; and a trigger disposed on one of the movable core, the movable member, and the movable contact assembly, wherein during movement of the movable core along the first direction when being pressed, the trigger moves under driving of the movable core and presses the microswitch, and the electromagnetic coil is energized when the microswitch is pressed.

The invention relates to a circuit-breaker comprising: - an unlocking lever (100) electrically isolated from the current to be interrupted, this unlocking lever being movable between: - an upright position in which a lock is in abutment against one of its ends, in order to keep the circuit-breaker in a non-circuit-breaking state, and - a retracted position in which the lock is no longer in abutment against this end, which allows the circuit-breaker to move into a circuit-breaking state, - a current loop through which the current to be interrupted flows, and - a magnetic target (162) facing the current loop, this magnetic target exerting a force on the unlocking lever, which force mechanically urges the unlocking lever towards its retracted position, this magnetic target (162) being attached, without any degree of freedom, to the unlocking lever.

A circuit breaker is provided and includes: a housing; an electromagnetic assembly disposed in the housing and including an electromagnetic coil and a movable core, wherein the movable core is adapted to move along a first direction when the electromagnetic coil is energized; a movable member disposed in the housing and connected to the movable core; a movable contact assembly disposed in the housing, interacting with the movable member and being adapted to move under driving of the movable member; a switch assembly disposed on the housing and including a microswitch; and a trigger disposed on one of the movable core, the movable member, and the movable contact assembly, wherein during movement of the movable core along the first direction when being pressed, the trigger moves under driving of the movable core and presses the microswitch, and the electromagnetic coil is energized when the microswitch is pressed.

In one example, a reset switch assembly is provided. The reset switch assembly may include a reset button assembly, a slider, a leaf switch, and a trip coil assembly. The slider may have a at least a first slider position and a second slider position. In the first slider position, the trip coil assembly may engage the slider to the reset button assembly. The leaf switch may be biased to a closed position. In in the second slider position, the slider may maintain the leaf switch in an open position. In another example, a circuit interrupter including the reset switch assembly is provided.

The invention relates to a circuit breaker comprising:-an unlocking lever (100) electrically insulated from the current to be interrupted, the unlocking lever being movable between:-an upright position in which a latch bears against one of its ends in order to maintain the circuit breaker in an uninterrupted state, and-a retracted position in which the latch no longer bears against the end in order to retain the circuit breaker in an uninterrupted state; the invention relates to a circuit breaker comprising:-an unlocking lever (161) arranged to move the circuit breaker to an open state,-a current loop through which a current to be interrupted flows, and-a magnetic target (162) facing the current loop, the magnetic target exerting a force on the unlocking lever which mechanically urges the unlocking lever towards its retracted position, the magnetic target (162) being attached to the unlocking lever without any degree of freedom.

The invention relates to the technical field of circuit breakers, and provides an arc extinguish chamber and a circuit breaker.The arc extinguish chamber comprises a supporting assembly, an insulating pull rod and a moving contact, the supporting assembly is provided with a first cavity section, a second cavity section, a communicating hole and a first opening communicating with the second cavity section, and the first cavity section communicates with the second cavity section through the communicating hole; the second cavity section is used for being communicated with the outside of the supporting assembly through the first opening, the insulating pull rod is movably arranged in the second cavity section, the moving contact movably penetrates through the communicating hole and is provided with a penetrating flow channel and a second opening communicated with the penetrating flow channel, the penetrating flow channel is used for guiding an electric arc, and the penetrating flow channel passes through the second opening and is communicated with the insulating pull rod. And the first cavity section is communicated with at least one of the first cavity section, the second cavity section and the communicating hole. The circuit breaker can solve the problems that high-temperature and high-voltage arc gas in the circuit breaker can cause serious faults such as contact ablation, insulation pull rod damage, fracture insulation strength reduction and even shell breakdown.

To provide a circuit breaker that can restrict the movement of the handle by restricting the movement of the link when the contacts are welded, thereby preventing discrepancies between the ON / OFF state indicated by the handle and the open / closed state of the contacts of the circuit breaker.SOLUTION: A circuit breaker includes a fixed contact 8, a movable contact 9 that can come into contact with the fixed contact 8, a push plate 12 that is arranged such that the movable contact 9 can be operated, a link 13 that has one end that can come into contact with the push plate 12, and a handle 4 that is connected to the other end of the link 13 and is arranged such that the push plate 12 can be operated such that the fixed contact 8 and the movable contact 9 come into contact or separate, and when the fixed contact 8 and the movable contact 9 are in a state where they are welded together, the push plate 12 has a restraining portion 12b that contacts the link 13 and restrains the movement of the link 13 by operating the handle 4 such that the fixed contact 8 and the movable contact 9 separate.SELECTED DRAWING: Figure 3

A compensation bimetal having at least two bends configured to reverse the direction of the compensation bimetal to form “S” curves is disclosed. The first end of the compensation bimetal is coupled with a differential lever while the second end is coupled with a tripping pin, and the length of the multi-metallic strip is greater than the distance between the differential lever and the tripping pin. The compensation bimetal may be bimetallic, trimetallic strip, or tetra-metallic. The compensation bimetal with the described configuration compensates for a greater range of ambient temperature fluctuations while preserving sensitivity to thermal tripping due to over-current conditions.