1628results about "Protective switch operating/release mechanisms" patented technology

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with a reclosing mechanism, which comprises a shell, a circuit breaker handle is rotationally arranged in the shell, an operating rod and at least three gears meshed in sequence are further rotationally arranged in the shell, and the tooth number of each gear is gradually increased in sequence. The two gears located on the two sides are a small gear and a large gear respectively, the number of teeth of the small gear is smaller than the number of teeth of the large gear, the operating rod is fixedly connected with the small gear, and the large gear is in transmission connection with a circuit breaker handle. Speed reduction and torque increase are realized through the gear train, so that the force required to be applied when a user manually operates the handle of the circuit breaker is remarkably reduced, the operation intensity is reduced, the convenience of manual reclosing is improved, and the manual reclosing device is particularly suitable for a large-current circuit breaker or an occasion requiring a relatively large operation torque.

The present disclosure relates to a circuit breaker having an energy releasing mechanism of an opening / closing mechanism part, and a circuit breaker according to an embodiment of the present invention comprises: an input latch locking device rotatably formed to restrict or release an input latch according to rotating angles thereof; an interlock movement rail which is installed on a cradle and in which an inspection position, a preparation position, and a driving position are configured; an interlock member for operating at least one among the input latch and a trip latch in a section excluding the inspection position, the preparation position, and the driving position while vertically moving in association with a relative movement of the interlock movement rail; and at least one link member connected between the interlock member and the input latch locking device and switching a linear movement in a vertical direction of the interlock member to a rotation movement, thereby rotating the input latch locking device.

A breaking mechanism, an operating unit and a measuring switch, comprising: a housing formed by splicing a first housing and a second housing which cooperate with each other, an installation space being formed between the first housing and the second housing, and an installation hole being arranged between the first housing and the second housing and being perpendicular to the length direction of the housing; the breaking unit is arranged in the mounting space and comprises a moving contact assembly rotatably arranged in the mounting space and a static contact matched with the moving contact assembly; and the magnetic flux unit is mounted in the mounting hole. The breaking unit and the magnetic flux unit form a complete module, the accuracy of the position of the magnetic flux unit during installation is guaranteed, meanwhile, the position and structure for installing the magnetic flux additionally arranged in the middle cover are omitted, the independent installation holes have the limiting and guiding effects, the problem of magnetic flux motion deviation can be effectively solved, and the installation efficiency is improved. The stability and accuracy of the magnetic flux motion trail in the switching-on and switching-off processes are ensured, and the operation precision of the circuit breaker is greatly improved.

The utility model relates to the technical field of circuit breaker structures, in particular to a rotating shaft structure of a double-breakpoint molded case circuit breaker, which is characterized in that a rotating shaft main body is of an integral structure design, a contact groove is formed in the rotating shaft main body along the radial direction, the middle part of a moving contact is inserted into the contact groove, and two ends of the moving contact penetrate out along an opening of the contact groove; the static spring shaft and the moving spring shaft are used for being in butt joint with the static contact, the static spring shaft and the moving spring shaft are located on the two sides of the moving contact respectively, the two ends of the contact spring are connected to the static spring shaft and the moving spring shaft respectively, and the moving spring shaft is pulled through elastic tension of the contact spring so that the two sides of the moving contact can abut against the inner side wall of the contact groove respectively. Due to the integral structure design of the rotating shaft main body, the three-phase synchronism of the molded case circuit breaker is consistent, the limit breaking capacity and the operation breaking capacity of the circuit breaker are greatly improved, the safety and the reliability of the circuit breaker in operation are improved, and the electrical life of the circuit breaker is prolonged.

The invention discloses a novel permanent magnetic mechanism suitable for a permanent magnetic circuit breaker and a ring main unit, which is characterized in that a static iron core and a movable iron core are oppositely arranged in an aluminum alloy shell along the axial direction, an internal pull rod penetrates through the axis of the aluminum alloy shell, and the internal pull rod movably penetrates through the static iron core and is connected with the movable iron core; a shaft fixing ring is movably arranged on an inner pull rod of the aluminum alloy shell, the shaft fixing ring movably abuts against the side, away from the static iron core, of the movable iron core, and the two sides of the shaft fixing ring are axially limited through a locking nut and a total stroke adjusting nut which are connected to the inner pull rod in a threaded mode. The mechanism is provided with a total stroke adjusting mechanism, an overtravel adjusting mechanism and a switching-on and switching-off speed adjusting mechanism, respective adjustment is achieved through special nuts, the problem of synchronous change of the opening distance and the overtravel of a traditional mechanism is solved, an aluminum alloy shell and a closed magnetic circuit are adopted, magnetic leakage is reduced, the magnetic field utilization rate and the impact resistance are improved, and spring pre-tightening force is changed through spring adjusting nuts; the switch-on and switch-off speed is accurately controlled, various loads are adapted, and the breaking risk is reduced.

The spring operating device comprises a front plate, a middle plate and a rear plate which are sequentially arranged from outside to inside, a first cavity is defined by the front plate and the middle plate, a second cavity is defined by the middle plate and the rear plate, and the spring operating device comprises an electric-manual energy storage mechanism fixedly installed on the front plate; the energy storage shaft penetrates through the front plate and the middle plate; the energy storage clutch mechanism is positioned in the first cavity; and the output shaft penetrates through the first cavity and the second cavity, and when the cam of the energy storage shaft drives the cam roller to act, the output shaft rotates to enable the mechanism output connecting rod to actuate the circuit breaker to be closed and enable the opening spring on the opening spring guide rod to store energy. Compared with the prior art, the spring operating device for the circuit breaker has the advantages of simplified assembly and high function integration level.

The application discloses a kind of on-off mechanism for processing phase-to-phase fault, including two single-pole double-throw switches and a third switch, single-pole double-throw switch includes first arc chamber and second arc chamber, first fixed contact is provided in first arc chamber, second fixed contact is provided in second arc chamber, first composite movable contact is provided between first arc chamber and second arc chamber, first composite movable contact one end is located in first arc chamber, first composite movable contact other end is located in second arc chamber, first composite movable contact is connected with first fixed contact when then is disconnected with second fixed contact, first composite movable contact is connected with second fixed contact when then is disconnected with first fixed contact;Third switch includes third arc chamber, third fixed contact and third movable contact are provided in third arc chamber.The on-off mechanism structure is simple, can realize one fault phase conduction and make another fault phase connect ground or public wire, and it is convenient to be used with existing screen cabinet, with important practical value.

The invention provides an inflatable cabinet rigid interlocking structure with grounding feed quantity indication, which belongs to the technical field of gas insulated metal-enclosed switchgear and comprises a cabinet body, a front door opening limiter, a front and rear door interlocking part, a three-position switch and a circuit breaker interlocking mechanism. The front door opening limiter is arranged at the front end of the cable chamber and used for limiting opening and closing of the front cabinet door. The front and rear door interlocking member is used for interlocking control of the front cabinet door and the rear cabinet door. The three-position switch is arranged on the cabinet body, and a disconnecting link of the three-position switch is linked with the front and rear door interlocking piece through a grounding interlocking piece; and the circuit breaker interlocking mechanism is arranged on the cabinet body and is respectively linked with the front door opening limiter and the three-position switch. During operation, the three-position switch and the authority of the front door opening limiter can be unlocked through opening of the circuit breaker interlocking mechanism; after the three-position switch is grounded, the front and rear door interlocking piece is unlocked through the grounding interlocking piece; the front door opening limiter is operated to open the front cabinet door, and the front and rear door interlocking piece can be triggered to open the rear cabinet door. According to the invention, the operation safety and reliability of the gas-insulated switchgear are comprehensively improved.

The invention provides a circuit breaker leakage protection indicating device, which comprises a shell, a first locking structure and a second locking structure, and is characterized in that the first locking structure comprises a first lock catch and a jump pin which are rotationally arranged and keep locking fit through an elastic structure; the second locking structure comprises a second lock catch, an indicating piece and an elastic reset piece. The indicating piece is driven by the operating mechanism to be away from the window and is locked with the second lock catch. When the electric leakage tripping structure is triggered, the first lock catch and the jump pin are driven to be unlocked, then the second lock catch unlocks the indicating piece through the jump pin, the indicating piece is automatically reset under the action of the elastic reset piece and is displayed on the window, and the jump pin synchronously drives the operating mechanism to be tripped. According to the electric leakage protection indicating device, double insurance is formed through a two-stage locking and tripping linkage mechanism, the two-stage locking is mutually restricted and triggered layer by layer, it is ensured that an indicating action strictly corresponds to an electric leakage fault, and the technical purposes of accurate indication of the electric leakage fault, automatic and error-free action, stable structure and interference resistance are achieved.

The invention discloses a built-in backup protection tripping device of a circuit breaker, and belongs to the technical field of circuit breakers. Comprising a magnetic steel unit group and an actuating mechanism, the magnetic steel unit group is composed of a fixed first magnetic steel group and a slidable second magnetic steel group, and an induced current is generated when the magnetic steel unit group is electrified to drive the second magnetic steel group to move transversely; the action mechanism comprises a push plate, a push plate spring, an inclined plane guide block and a push rod, when short circuit occurs, the electromagnetic driving force overcomes the spring force and drives the push plate to move transversely, the transverse movement of the push plate is converted into the vertical movement of the push rod through the inclined plane guide block, and a tripping rod of the circuit breaker is pushed to rotate to realize tripping. According to the device, a non-excitation type and passive response type backup tripping mechanism is constructed by innovatively adopting an induction magnetic steel group and an inclined plane motion conversion mechanism, the technical defect of protection failure caused by electromagnetic interference of a traditional electromagnetic tripping device is fundamentally overcome, and the device is particularly suitable for the application field with extremely high requirements on safety and stability.

A circuit breaker relates to the technical field of low-voltage electrical appliances and comprises a shell, a handle, an operating mechanism and a contact mechanism, the shell is provided with a first rotating shaft and a second rotating shaft, the operating mechanism is mounted on the first rotating shaft and comprises a mechanism seat, a jump fastener and a lock fastener, the contact mechanism comprises a moving contact and a static contact, the moving contact is mounted on the second rotating shaft, and the static contact is mounted on the second rotating shaft. The handle and the jump fastener are connected through a first connecting rod. The jump fastener and the moving contact are connected through a second connecting rod. During normal switching-on or switching-off operation, the locking fastener is buckled with the tripping fastener, and the handle is driven to drive the mechanism seat to rotate around the first rotating shaft through the first connecting rod, so that the moving contact is driven to be close to or far away from the static contact through the tripping fastener and the second connecting rod; when a fault is tripped, the locking piece and the tripping piece are tripped, and the moving contact is driven to rotate around the second rotating shaft so as to be far away from the static contact. According to the circuit breaker, the operating mechanism and the moving contact are respectively arranged on different rotating shafts, and the motion decoupling of the operating mechanism and the moving contact is realized during fault tripping, so that the moving contact can be quickly broken.

The invention relates to the technical field of low-voltage switch cabinets, in particular to an interlocking mechanism, a hand-cranking movable plug-in type assembly and a hand-cranking movable plug-in type unit. The interlocking mechanism comprises a position interlocking mechanism and a closing interlocking mechanism; the rear end of a transition connecting rod of the closing interlocking mechanism is in linkage fit with a position locking plate through a linkage structure, and an interlocking part is arranged on a closing interlocking plate and used for being matched with the front end of the transition connecting rod to achieve closing interlocking. A plugging assembly rack of the hand-cranking movable plugging assembly is located behind the closing interlocking mechanism, and the rear end of the closing interlocking support is installed at the front end of an assembly rack bottom plate of the plugging assembly rack. The beneficial effects are that the closing interlocking mechanism and the position interlocking mechanism can be arranged front and back; the hand-cranking movable plug-in type unit can be maintained without power failure, the depth of a unit chamber can be 300mm, the depth of a plug-in assembly rack can be 200mm, and the hand-cranking movable plug-in type unit has the functions of isolation-connection position positioning, hand-cranking propelling mechanism locking, circuit breaker switching-on locking and circuit breaker switching-off unlocking.

This disclosure discloses an operating mechanism including a housing; a drive shaft parallel to the pivot axis of a moving contact, the drive shaft passing through and protruding from a moving contact assembly, the moving contact assembly being pivotable relative to the housing about the pivot axis of the moving contact; a pull rod configured to move between a first position and a second position; a pivot plate mounted to be pivotable relative to the housing about the pivot axis of the moving contact, the pivot plate having a first hole for connection with the drive shaft; a first pivot member, one end of which is pivotally connected to the housing; and a second pivot member, one end of which is pivotally connected to the other end of the first pivot member and the pull rod, the other end of which is pivotally connected to the pivot plate at a second hole in the pivot plate, so as to drive the pivot plate to pivot about the pivot axis of the moving contact, and thereby drive the moving contact assembly to pivot about the pivot axis of the moving contact. The distance between the second hole and the pivot axis of the moving contact is less than the distance between the pivot axes of the two ends of the first pivot member.

The invention relates to an anti-demagnetization bistable quick release for an elastic operation mechanism, which is characterized by comprising an anti-demagnetization double-magnet unit, an armature unit, a coil unit and a self-adaptive pulse control system, and is characterized in that the anti-demagnetization double-magnet unit comprises a main permanent magnet, an auxiliary permanent magnet, a magnetic conductive yoke and an iron core; the main permanent magnet, the auxiliary permanent magnet and the coil unit are all assembled and connected with the magnetic conductive yoke to form a magnetic circuit loop, and the main permanent magnet and the auxiliary permanent magnet are connected in parallel to play a role in demagnetization resistance. And the magnetic conductive yoke is provided with an air gap, and a magnetic field at the air gap is used for adsorbing the armature and realizing the tripping action. When the device is matched with the circuit breaker for use, the tripping speed, the operation stability and the opening action consistency of the circuit breaker can be improved.

The invention discloses an intelligent opening and closing method and system for a reclosing circuit breaker based on an electromagnet, and relates to the field of intelligent control, and the method comprises the steps: monitoring a line current in real time, comparing the line current with a preset threshold value, and carrying out the opening after the overcurrent abnormality is detected. Entering a first time delay stage after opening, comprehensively evaluating the states of the circuit breaker and the circuit, and constructing a dynamic weight index system to calculate an evaluation score; if the score exceeds a threshold value, closing is carried out after time delay is finished, otherwise, an alarm is triggered. And entering a second delay stage after switching on, continuously monitoring the electric parameters and establishing an anomaly judgment mechanism, forming a closed-loop protection process of monitoring, switching off, evaluating, switching on and re-monitoring, and realizing intelligent linkage of overcurrent protection and state self-adaption. The method has the advantages that through real-time line electric parameter monitoring, multi-dimensional state evaluation and an intelligent decision-making mechanism, precise opening and closing of the circuit breaker are achieved, the power supply reliability is improved, the power failure time is shortened, and the misoperation risk is reduced.

The application relates to a circuit breaker, belonging to the technical field of low-voltage electrical appliances. The circuit breaker comprises a rectangular shell and a zero-sequence current transformer, a release, a circuit board and an operating mechanism arranged in the shell respectively, the circuit board is electrically connected with the zero-sequence current transformer and the release respectively, and the release is in transmission connection with the operating mechanism; the zero-sequence current transformer is used for detecting a leakage current signal of the circuit breaker, the circuit board drives the release to release according to the leakage current signal, so that the release drives the circuit breaker to open through the operating mechanism.

A drawer base door opening and closing structure, comprising a first gear and a safety door. The first gear is rotationally arranged and can drive a circuit breaker body to move back and forth in a drawer base, the first gear being an incomplete gear that is provided with transmission teeth. The safety door comprises a movable partition plate and a static partition plate, the movable partition plate being vertically movably arranged on the static partition plate, and further comprises a sliding plate and an elastic member for resetting the sliding plate, wherein the sliding plate is provided with a sliding-plate guide rail, and the drawer base is provided with a rotation support; the cooperation between the sliding-plate guide rail and the rotation support enables the sliding plate to be movably arranged on the drawer base; and the sliding plate can move along the sliding-plate guide rail and can rotate around the rotation support. A circuit breaker, comprising the drawer base door opening and closing structure. In the drawer base door opening and closing structure and the circuit breaker of the present invention, the first gear, which is rotationally arranged and drives the circuit breaker body to move in the drawer base, directly drives the sliding plate to achieve drawer base door opening and closing, so that there are a small number of transmission stages, enabling operations to be stable and reliable, improving the reliability of drawer base door opening and closing, while also greatly reducing the number of parts, enabling assembly to be convenient and quick.

A circuit breaker protects an electrical low-voltage circuit. The circuit breaker has a housing with first and second connections on the mains side and first and second connections on the load side, and an isolating contact unit connected to an electronic interrupting unit. The isolating contact unit can be switched by opening contacts to prevent current flow or by closing contacts for current flow in the low-voltage circuit. The electronic interrupting unit is switched by semiconductor-based switching elements into a high-impedance state for preventing the current flow or into a low-impedance state of the switching elements for the current flow in the low-voltage circuit. A current sensor determines the level of the current of the low-voltage circuit. A controller is connected to the current sensor, the isolating contact unit and the electronic interrupt unit, such that a first measuring impedance is provided between the first and the second load-side connection.

The invention relates to the technical field of circuit breakers, and discloses a switching-on and switching-off structure of a reclosing circuit breaker, which comprises a shell, a static contact, a moving contact, a switching-on and switching-off knife switch and a switching-on assembly, and the static contact and the moving contact are arranged in the shell. The closing assembly comprises a driving motor and a transmission part arranged between the opening and closing knife switch and an output shaft of the driving motor, the driving motor can drive the transmission part to act, and the transmission part can drive the opening and closing knife switch to act. When an instantaneous fault of a circuit where the circuit breaker is located disappears, the driving motor drives the transmission part to act and further drives the opening and closing knife switch to act, direct driving of a power source is achieved, the mechanical structure is simplified, the fault probability caused by complex mechanical interlocking and lock catch abrasion and jamming is reduced, the mechanical response time is shortened, and the service life of the circuit breaker is prolonged. And the execution speed of the automatic reclosing is improved, so that the intelligent power grid can recover power supply more quickly.

A switch apparatus (30) and an inverter. The switch apparatus comprises a housing (35), an operating handle (31), an operating mechanism (32), a moving contact (331), a static contact, and a first trip device (34). A traction rod (321) and a locking rod (323) separately rotate relative to the housing. The traction rod is transmittingly connected to the operating mechanism. The traction rod has a first surface (S1) and a second surface (S2) adjacent to each other. When the traction rod is located at a first position, a latch lever (322) is engaged with a trip latch (HE). When the traction rod is located at a second position, the latch lever is disengaged from the trip latch. On the basis of a driving signal, the first trip device is used for driving the traction rod to rotate from the first position to the second position, and at the same time, one end of the locking rod slides from the first surface to the second surface to lock the rotation direction of the traction rod, thereby keeping the latch lever disengaged from the trip latch. Thus, the operating handle is disengaged from the operating mechanism, failing to drive the moving contact to move, so that the switch apparatus cannot be closed, thereby improving the stability of the switch apparatus in a tripped state.

The application belongs to the technical field of circuit breakers, and discloses an intelligent measurement plastic shell type circuit breaker, which comprises a shell serving as a protective structure of the whole shell type circuit breaker, a switch connected to the inside of the shell and used for opening and closing of a circuit, an operating handle connected to the switch and used for operating the switch, and a middle positioning assembly comprising a positioning arc-shaped plate, a connecting frame, a cylinder, an insertion rod, an inclined plate and a lifting plate. The positioning arc-shaped plate is provided in a total number of two, is connected to the inside of the shell and is symmetrically arranged along the center line of the switch. The lifting plate is used for locking a spring force balance point in the middle of the positioning arc-shaped plate, and the operation torque drops in a cliff-like manner when the lifting plate is disassembled, so that the disassembly difficulty of the operating handle is reduced, the connecting structure is limited, and the problem that the structure inside the circuit breaker is damaged due to impact force caused by sudden release of the operating handle after the operating handle is disassembled is avoided.

The invention provides an operating mechanism. The operating mechanism comprises a shell; the transmission shaft is parallel to the first pivoting axis, the transmission shaft penetrates through and protrudes out of the moving contact assembly, and the moving contact assembly can pivot around the first pivoting axis relative to the shell; a pull bar configured to move between a first position and a second position; the pivoting piece is installed to be capable of pivoting relative to the shell around a second pivoting axis, and the pivoting piece is provided with a first hole connected with the transmission shaft in a pivoting mode. Wherein the pull rod is connected with the pivoting sheet in a relative pivoting manner at the second hole of the pivoting sheet, so as to drive the pivoting sheet to pivot around the second pivoting axis, and further drive the moving contact assembly to pivot around the first pivoting axis by the pivoting sheet. When the pull rod moves from the second position to the first position, the moving contact assembly is driven by the pivoting sheet to be in contact with the static contact, and when the pull rod moves from the first position to the second position, the moving contact assembly is driven by the pivoting sheet to be pivoted to be separated from the static contact. The second bore is closer to the second pivot axis than the first bore.

The technical scheme belongs to the technical field of circuit breakers, and particularly relates to a button tripping structure of a circuit breaker, which comprises a shell, a short-circuiting device, a tripper and a testing mechanism, the testing mechanism forms a loop to attract an armature after being electrified, the tripping structure is arranged in the shell and is linked with the testing mechanism, and the button tripping structure comprises a reset button, a linkage rod, an elastic piece and the armature. The reset button slides at a button opening in the side wall of the shell and is provided with a clamping part; the other end of the linkage rod penetrates through the through hole of the shell and is connected with the short-circuiting device; the elastic piece abuts against the reset button and the inner wall of the shell, so that the reset button tends to move towards the linkage rod, the armature is hinged to the interior of the shell, a lock catch protrusion is arranged and can be switched between a first position and a second position around a shaft, at the beginning, the armature is opened at the first position, and a clamping part of the lock catch protrusion limits the reset button. When the circuit breaker is released, the lock catch protrusion is released from the clamping portion, the elastic piece pushes the reset button to slide to the button opening, the linkage rod moves along with the reset button to release the circuit breaker, and releasing is smooth and efficient.

The invention relates to the technical field of protectors, in particular to a power-off reset anti-pulse overcurrent and overheat protector and a manufacturing method thereof, and the protector comprises a PTC heating element which forms a hollow structure; the sensing assembly is arranged in the hollow structure; the first connecting plate is arranged at the top of the PTC heating element; the second connecting plate is arranged at the bottom of the PTC heating element; the faces, facing the hollow structure, of the first connecting plate and the second connecting plate provide installation positions for the induction assembly, the two opposite side edges of the first connecting plate are continuously bent and extend to the bottom of the PTC heating piece to form wrapping edges, and an insulating plate is arranged between the first connecting plate and the second connecting plate. The PTC heating element is used for providing an installation space, an additional installation support is not needed, redundant space between parts is greatly compressed, the PTC heating element forms a double conduction mechanism of air heat storage and contact heat compensation, and the reliability of circuit protection is improved.

The invention provides a solid-state circuit breaker. The solid-state circuit breaker comprises a shell; the contact assembly is configured to be switched between an opening state and a closing state; a semiconductor element in series with the contact assembly; a handle configured to move between an opening position and a closing position; the first microswitch is fixed to the shell and can be triggered to generate a first signal; the second microswitch is fixed to the shell and can be triggered to generate a second signal; a first trigger portion coupled to the handle to move with movement of the handle; and a second trigger portion coupled to the handle to move with the movement of the handle. Wherein in the process that the handle moves from the closing position to the opening position, before the contact assembly is switched to the opening state, the first trigger part triggers the first microswitch to generate a first signal; and in the process that the handle moves from the opening position to the closing position, the second trigger part triggers the second microswitch to generate a second signal before the contact assembly is switched to the closing state.

A residual current circuit breaker with overcurrent protection, which comprises a residual current protection pole and a circuit breaker pole. The residual current protection pole is provided with a residual current power supply contact consisting of a moving contact member and a fixed contact member, and a driving member for driving the moving contact member to come into contact with and separate from the fixed contact member, wherein the residual current power supply contact consisting of the moving contact member and the fixed contact member is connected in series in a power supply circuit, which supplies power to an electronic component board and / or a residual current release, and the driving member is interlocked with an operating mechanism of the circuit breaker pole. When a main circuit of the circuit breaker pole is switched on, the driving member is driven by the operating mechanism to drive the moving contact member to come into contact with the fixed contact member, thereby closing the power supply circuit; and when the main circuit of the circuit breaker pole is switched off, the driving member is driven by the operating mechanism to drive the moving contact member to separate from the fixed contact member, or the driving member is driven by the operating mechanism to move away from the moving contact member, causing the moving contact member to reset to a position at which the moving contact member is separated from the fixed contact member, thereby opening the power supply circuit. Thus, damage caused by mistakenly reversing an incoming line terminal end and an outgoing line terminal of the circuit breaker pole during wiring can be avoided.

The invention relates to a universal circuit breaker energy absorption device, and the device comprises a housing which is of a hollow structure; the moving contact mechanism comprises a supporting seat, and the lower end of the supporting seat is rotatably arranged at the bottom of the inner side of the shell; the energy absorption structure is made of a high-temperature-resistant viscoelastic material and is arranged at the front end of the inner side of the shell; when the universal circuit breaker is switched off, the supporting seat rotates around the rotating axis at the lower end to a switching-off position, the front end of the supporting seat is in collision contact with the energy absorption structure, the energy absorption structure is made of a high-temperature-resistant viscoelastic material, friction and lag deformation are generated after the energy absorption structure is stressed, kinetic energy is converted into heat energy, and the energy absorption structure is in contact with the energy absorption structure. The collision kinetic energy between the supporting seat and the inner side of the shell is reduced, so that the resilience force converted from the collision kinetic energy is reduced, the resilience distance is obviously reduced after the supporting seat collides with the shell, and the possibility of electric arc reignition is greatly reduced.

The invention relates to the technical field of circuit breakers, in particular to a double-connecting-rod reclosing mechanism and a circuit breaker, and the double-connecting-rod reclosing mechanism comprises a driving assembly, a rotating part, a first connecting rod, a second connecting rod, a fixed plate and a sliding block, the driving assembly is used for driving the rotating part to rotate, and the first connecting rod comprises a connecting end and a transmission end; the connecting end is eccentrically and rotationally connected to the rotating piece, the transmission end is rotationally connected with the second connecting rod, the fixing plate and the sliding block are both located on one side of the rotating piece, the sliding block can slide in the direction close to or away from the rotating piece and is used for driving a circuit breaker handle to rotate, a chute is formed in the fixing plate, and the sliding block can slide in the chute in the direction close to or away from the rotating piece. The second connecting rod comprises a sliding end and a rotating end, the sliding end slides along the inclined groove, the rotating end is rotationally connected with the sliding block, and the transmission end is located between the sliding end and the rotating end.

The invention discloses a bidirectional direct current circuit breaker which comprises an electronic branch assembly, a voltage limiting branch assembly and an energy consumption branch assembly. The electronic branch assembly is used for transferring current; the voltage limiting branch assembly is electrically connected with the electronic branch assembly in parallel so as to reduce the turn-off overvoltage of the circuit breaker; and the energy consumption branch assembly is electrically connected with the electronic branch assembly in parallel so as to be used for absorbing the energy of the circuit. According to the hybrid DC circuit breaker, the current transfer function of the hybrid DC circuit breaker can be realized through the electronic branch assembly, the voltage limiting branch assembly and the energy consumption branch assembly. Compared with a bidirectional direct-current circuit breaker based on a power electronic device in the related technology, the bidirectional direct-current circuit breaker is compact in structure, low in connection inductance and high in universality, and functional units can be configured. The problems that in the related technology, connection is complex, redesign is needed under different working conditions, and functional units are inconvenient to adjust are solved.

A latch system for an electrical equipment enclosure includes a latch arm receiver adapted to be connected to an associated enclosure door. A latch arm assembly is adapted to be connected in operative engagement with an associated circuit breaker. The latch arm assembly includes a chassis and a latch arm that moves relative to the chassis between: (i) a first arm position; (ii) a second arm position; and (iii) an intermediate arm position between the first arm position and the second arm position. A latch arm spring biases the latch arm toward its first arm position. A handle is rotatably connected to the chassis and operatively connected to the toggle of the circuit breaker. The handle is movable to and between an ON handle position, a TRIP handle position, an OFF handle position, and a RESET handle position. The handle is operatively connected to the latch arm such that the latch arm is positioned in the second arm position when the handle is located in said RESET handle position. The latch arm spring biases the latch arm into one of the first position and the intermediate position when the handle is in any one of said ON handle position, said TRIP handle position, and said OFF handle position. A lockout plunger is connected to the handle to rotate with the handle and is movable between a disengaged position and an engaged position, wherein the lockout plunger prevents movement of the handle from the OFF handle position to the ON handle position when the lockout plunger is in its engaged position