17results about "Switches with electrothermal release" patented technology

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.

The present invention discloses a double-sheet-metal structure for switches, and belongs to the technical field of switching equipment. The double-sheet-metal structure for switches includes a base, a main body and a fixed bracket. The present invention solves the problems of excessive deformation of the double sheet metal after a long time and difficulty in restoring the original state, achieving higher radian height of overall deformation of the double sheet metal and higher stability of current of the double sheet metal, and then realizing more excellent overall performance and more convenient operation.

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.

Reset device for resetting a trigger plunger (2) of a release (1) in a protective switching device, in particular a residual current circuit breaker or FI / LS combination device, with the aid of a reset joint (9) which is designed to reset the trigger plunger (2) into its rest position.

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.

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 embodiment of the utility model provides a circuit breaker. The circuit breaker comprises a shell; the electromagnetic assembly is arranged in the shell and comprises an electromagnetic coil and a movable iron core arranged in the electromagnetic coil, and the movable iron core can move in the first direction under the condition that the electromagnetic coil is powered on; the moving part is arranged in the shell and is connected with the movable iron core; the moving contact assembly is arranged in the shell, and the moving contact assembly interacts with the moving part and can be driven by the moving part to move; the switch assembly is arranged on the shell and comprises a microswitch; the trigger piece is arranged on one of the movable iron core, the movable piece and the movable contact assembly, and when the movable iron core is pressed to move in the first direction, the trigger piece is driven by the movable iron core to move and can press the microswitch. And under the condition that the microswitch is pressed, the electromagnetic coil is electrified.

To provide a tripping device capable of easily ensuring the temperature required for tripping an indirectly heated bimetal plate, a circuit breaker, and a distribution board.SOLUTION: A tripping device 1 includes a fixed iron piece 11, a moving iron piece 12, a push-in part 14, an electric circuit L1, and an indirectly heated bimetal plate 4. The bimetal plate 4 is configured to move the push-in part 14 to push latch 3 from the latched position to the unlatched position by being deformed by the heat generation of the electric circuit L1. The bimetal plate 4 is placed between a part of the fixed iron piece 11 and the moving iron piece 12.SELECTED DRAWING: Figure 1

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.

To stabilize a tripping operation in a circuit breaker.SOLUTION: A circuit breaker 11 includes a movable contact 14, a crossbar 26, a movable holder 27, and a wire 41. The movable contact 14 can rotate between a closed position and an open position. The crossbar 26 trips a switching mechanism 15 by rotating. The movable holder 27 holds the movable contact 14, and is opened and closed by the switching mechanism 15, whereby it rotates to the open position in conjunction with the tripping of the switching mechanism 15. The wire 41 has one end fixed to the movable contact 14 and the other end fixed to the crossbar 26, and pulls and rotates the crossbar 26 when the movable contact 14 opens due to current-limiting interruption.SELECTED DRAWING: Figure 3

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.

This invention discloses a circuit breaker with excitation protection, comprising a housing, a moving contact bridge, a stationary contact, and a coil assembly for driving the moving contact bridge to make conductive contact with the stationary contact. An excitation source, a conductor power device, and a conductor are disposed within the housing. The moving contact bridge and the conductor are connected in series and are conductively connected. The moving contact bridge is displaceable relative to the conductor. The stationary contact and the conductor are respectively connected to an external circuit as connection terminals. When a fault current occurs, the moving contact bridge separates from the stationary contact, disconnecting the circuit. Alternatively, the excitation source activates upon receiving a fault current trigger signal, driving the conductor power device to disconnect the conductor, simultaneously causing the moving contact bridge to separate from the stationary contact, disconnecting the circuit. This invention integrates the advantages of circuit breakers and fuses, featuring fewer breaks, lower temperature rise and power consumption, and also enables active protection, making it more intelligent and greatly improving the reliability and effectiveness of short-circuit protection.

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.