283results about "Protective switch operating/release mechanisms" patented technology

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.

This utility model relates to the field of circuit breaker technology, specifically a modular low-voltage molded case circuit breaker, including a circuit breaker housing. An operating rod body is installed at the center of the surface of the circuit breaker housing. A control module is bolted to one side of the surface of the circuit breaker housing. A control mechanism is provided on the outside of the operating rod body, and the control mechanism includes a control base plate. Through the coordinated installation of the control module, control mechanism, connecting components, and lifting mechanism outside the circuit breaker housing, a conventional circuit breaker can have remote control functionality by installing accessories. Thus, when it is necessary to reset the position of the operating rod body of the circuit breaker housing, it can be achieved by remotely controlling the extension and retraction of the electric push rod, replacing manual reset and eliminating the risks of climbing to high places, significantly improving the operational efficiency in the process of resetting the operating rod body of the circuit breaker housing.

This invention proposes a multi-channel DC adjustable intelligent electronic circuit breaker, specifically relating to the field of circuit protection technology. It includes an MCU module; a power supply connected to the MCU module; a current adjustment knob (KNOB) connected to the MCU module; at least one intelligent fuse connected to both the power supply and the MCU module, with each intelligent fuse corresponding to a load connected to its respective channel; one-time fuses corresponding to the intelligent fuses; and a Bluetooth unit built into the MCU module. By configuring the MCU module, designing the current adjustment knob (KNOB) on the MCU module, and designing intelligent fuses on each load-connected path, the short-circuit protection response time of the multi-channel DC adjustable intelligent electronic circuit breaker proposed in this invention is improved by one level, from the microsecond (µs) level to the nanosecond (ns) level.

The application provides a circuit breaker, comprising a shell, an incoming terminal, a solid-state circuit module, a circuit board, an operating mechanism, a release and a load terminal; the incoming terminal comprises a first input terminal and a second input terminal, the solid-state circuit module comprises an L-pole conductive part and an N-pole conductive part, the operating mechanism comprises a moving contact and a stationary contact, and the load terminal comprises a first output terminal and a second output terminal; wherein the L-pole conductive part is provided with a first extension part connected with the first input terminal and a second extension part connected with the moving contact, the N-pole conductive part is provided with a third extension part connected with the second input terminal and a fourth extension part connected with the second output terminal, and the stationary contact is provided with a conductive row connected with the first output terminal; since each module is connected by a single part, the influence of adjacent modules does not have to be considered when designing each module, and the difficulty is lower; each module can be machined and assembled respectively, and then assembled as a whole in the shell, so that the machining time is shortened.

An operating mechanism for a circuit breaker includes: a first base plate, a second base plate, a first linkage mechanism, and a second linkage mechanism. The first and second linkage mechanisms each include a first link, a second link, and a third link. One end of the first and third links is pivotally connected to the corresponding base plate at a first hinge point and a third hinge point, respectively. One end of the second link is hinged to the free end of the third link, and the other end is hinged to the middle of the first link at a second hinge point. The first link includes a first hole provided on its free end. An output shaft extends through the first hole of the first link of the first and second linkage mechanisms. The first and / or second linkage mechanism further includes a fourth link. One end of the fourth link is pivotally connected to the first hinge point, and the fourth link is hinged at the middle of the second hinge point. The fourth link has a second hole on its free end, and the output shaft extends through the second hole.

This utility model relates to the field of thermal protectors, specifically a high-current dual-control delayed miniature thermal protector, comprising an insulating base, an insulating cover, a first pin, a second pin, and a bimetallic strip. The bimetallic strip has a moving contact. The insulating cover is fixed to the insulating base and encloses it. The first and second pins are embedded within the insulating base. The insulating base is characterized by having a conductive plate, a heating wire, and a PTC thermistor mounted on it. The conductive plate has a stationary contact that mates with the moving contact. One end of the heating wire is electrically connected to the conductive plate, and the other end is electrically connected to the second pin. One end of the PTC thermistor is electrically connected to the first pin, and the other end is electrically connected to the conductive plate. When in use, this thermal protector can more promptly disconnect the circuit when the electrical load current in the circuit abnormally increases, effectively protecting the electrical appliances and preventing damage.

This application discloses a magnetic tripping device and an electronic molded case circuit breaker in the field of power distribution circuit breaker technology. The magnetic tripping device includes an annular current transformer, a trip unit, a moving contact, a traction rod, and a connecting plate. The trip unit includes a shaft, a push rod, a reaction spring, and a stationary iron core. The moving contact is connected to the connecting plate, which passes through the inner ring hole of the current transformer. The trip unit is installed on the connecting plate inside the inner ring hole of the current transformer. The shaft passes through the connecting plate and is parallel to the annular surface of the current transformer. The stationary iron core is fixed perpendicularly to the shaft within the connecting plate within the inner ring hole of the current transformer. The push rod is rotated and fixed on the shaft through a connecting arm, causing the magnetic attraction surface to rotate around the shaft under the magnetic attraction force of the stationary iron core. The traction rod extends radially with a tripping arm. When the push rod rotates under the magnetic attraction force of the stationary iron core, the tripping end strikes the tripping arm, causing the traction rod to rotate. The reaction spring is disposed between the connecting plate and the magnetic attraction surface of the push rod. This solution solves the problem that the prior art cannot interrupt small-capacity short-circuit currents, achieving the technical effect of improving the breaking reliability.

This invention relates to the field of circuit breaker technology, specifically to a circuit breaker opening and closing operating mechanism and a residual current protection circuit breaker. The circuit breaker opening and closing operating mechanism of this invention, by setting a switchable clutch component between the electric drive assembly and the driven shaft, and by a control mechanism realizing the switching and maintaining of the clutch component between the engaged and disengaged states, allows the electric drive link to be selectively isolated from the opening and closing actuator without power interruption. This avoids interruption of monitoring and data acquisition due to power failure during on-site maintenance, reducing the risk of missing operational data.

A circuit breaker for protecting an electric low-voltage circuit includes a housing with grid and load-side terminals, and a mechanical break contact unit series-connected to an electronic interruption unit. The break contact unit pairs with the load-side terminal, and the interruption unit pairs with the grid-side terminal. The current level in the low-voltage circuit, between the grid and load-side phase conductor terminals, is ascertained. Preventing current flow in the low-voltage circuit is initiated upon exceeding current and / or current / time thresholds. A measurement impedance between wires of the low-voltage circuit is connected to the connection between the break contact unit and the interruption unit. While contacts of the break contact unit are open and the interruption unit switches to high-ohmic state, the interruption unit switches to low-ohmic state for a period to check functionality of the circuit breaker.

A device comprising: a contact mechanism (or switch); an actuation knob; and a housing. The contact mechanism (or switch) comprises: an actuating mechanism; a first conductor; a second conductor; and a moveable contact moveable, by the actuating mechanism, between a first, closed, position in which a current conduc-tion path is defined through the first, second and moveable conductors of the contact mechanism and a second, open, position in which no current conduction path is defined. The actuation knob (or knob) comprises: a first side configured to drive the actuating mechanism upon rotation of the actuation knob, the first side comprising a cam portion which directly engages with the actuating mechanism; a second side opposite the first side; and an engagement portion protruding from the second side and configured for engagement by a user. The housing encloses both the contact mechanism and the first side of the knob.

This invention discloses a PCS energy storage inverter cabinet, comprising: a cabinet body, an arc-extinguishing circuit breaker, a PCS inverter assembly, and an input busbar assembly and an output busbar assembly fixed inside the cabinet body. A first electrode and a second electrode are fixedly installed on the inner side of the cabinet body, located at both ends of the arc-extinguishing circuit breaker and electrically connected to both ends of the circuit breaker, respectively. Both ends of the PCS inverter assembly are electrically connected to the second electrode and the ends of the output busbar assembly, respectively. The input busbar assembly includes: a first busbar assembly and, sequentially connected to it, an electrical isolation device, an overcurrent protector, and a filter module. In this invention, by setting an arc-extinguishing circuit breaker structure, the contact head and electrode ears deflect under the mechanical pressing action of the circuit pressure rod to engage the electrodes, improving the closing and opening speed and establishing an effective and stable connection. That is, the distance between the contacts increases significantly within the same time frame, and the electric field strength decreases, which helps to establish a strong arc-extinguishing capability in a shorter time.

An electromagnetic actuator comprises a first polar plate 101 having a first head portion 111, a second polar plate 102 spaced apart from the first plate and having a second head portion adjacent the first head portion, a permanent magnet 104, and an armature 103. The armature is movable between a closed position where it contacts the head portions and an open position where it does not contact the head portions. The plates each comprise an opening window 131 or cutout passing therethrough with an upper bridge 115 disposed on one side of the window and a lower bridge 116 disposed on an opposite side. The window of the first plate is aligned with the window of the second plate. The height H1 of each upper bridge and the height H2 of each lower bridge are dimensioned such that 0.5 x H1 ≤ H2 ≤ 5 x H1. At least part of the upper and lower bridges may be magnetically saturated by the permanent magnet when the armature is in the closed position. A coil 106 may be wound around the plates and pass through the window so that a current flowing through the coil reduces the magnetic holding force of the permanent magnet. Figures 1 and 4

The utility model provides a kind of circuit breaker protection mechanism, the purpose is to solve the technical problem that current circuit breaker is extremely easy to produce arc phenomenon when switching operation. The protection mechanism includes: cover plate, it is rectangular structure, cover plate middle part has operating port;Operating member, sliding is set on operating port, operating member has a connecting portion, connecting portion can be connected with the operating lever of circuit breaker;Four extension plates, respectively sliding is set on the periphery of cover plate;Connecting plate, vertically set on the edge of extension plate;Wherein, at least one connecting plate is provided on each extension plate. The protection mechanism is set up by the extension plate that can slide on the periphery of cover plate, adapt to different models circuit breaker, when installation, connecting plate is clamped in the periphery of circuit breaker, the operating lever of circuit breaker passes through from operating port on cover plate, and is connected with operating member power, by operating member, the switching of circuit breaker can be directly operated. By the technical scheme, the safety when operating circuit breaker is improved.

The application belongs to the technical field of low-voltage electrical apparatus, and particularly provides a low-power under-voltage release based on relay driving, which comprises a surge absorption circuit, a rectification circuit, a DC / DC circuit, a voltage detection and release driving circuit, a starting time control circuit, a starting current control circuit, a release control circuit and a release coil; the rectification circuit is connected with the surge absorption circuit, the DC / DC circuit and the starting current control circuit respectively; the DC / DC circuit is further connected with the voltage detection and release driving circuit and the starting time control circuit respectively; the voltage detection and release driving circuit is further connected with the release control circuit; the release control circuit, the starting time control circuit and the starting current control circuit are connected in sequence; and the release control circuit and the starting current control circuit are both connected with the release coil. The low-power under-voltage release based on relay driving has the advantages of low power consumption, long service life, stable action voltage and the like.

This invention discloses an automatic power transfer switch, belonging to the field of low-voltage electrical technology. The automatic power transfer switch includes multiple actuators and a control unit for controlling the actuators. Each actuator includes a closing drive mechanism and a opening drive mechanism for driving the actuator to close and open, respectively. The opening drive mechanism is a holding-type shunt trip unit, which can prevent the closing drive mechanism from performing a closing operation during the duration of the opening drive signal and during the time t0 from the removal of the opening drive signal to the release of the holding-type shunt trip unit. Compared with the prior art, this invention achieves a safe and reliable interlocking function for the automatic power transfer system without any additional interlocking circuits or interlocking mechanisms, and can minimize the load power outage time during power switching.

This application relates to a primary and secondary deep integration pole-mounted circuit breaker, belonging to the technical field of smart grids. It includes a circuit breaker body and a housing fixed to the front of the circuit breaker body. An operating handle is rotatably mounted on the front side of the housing. Several pole posts are fixed on the left and right sides of the circuit breaker body, several lifting rings are fixed on the top surface, and a support frame is fixed on the bottom surface. A fixing plate is rotatably mounted on the top surface of the housing. The fixing plate can be rotated towards the front of the housing to a horizontal protection state and away from the front of the housing to a horizontal application state. A limiting member is provided on the top surface of the circuit breaker body to lock the fixing plate in both states. A protective plate is detachably mounted on the side edge of the fixing plate away from the housing. In this application, during transportation, the fixing plate is rotated to the horizontal protection state, and the protective plate vertically downwards effectively shields and protects the operating handle on the front side of the housing.

This utility model belongs to the field of drawer cabinets, specifically relating to a manual operating mechanism for a circuit breaker used in a drawer cabinet. It includes a frame, a fixed base, gears, and a push plate. The gears are linked to the fixed base to drive the push plate to perform opening and closing actions. The push plate is slidably mounted on the frame and drives the circuit breaker handle to perform opening and closing actions. A sliding plate reciprocates along the width of the frame within the fixed base. A bushing reciprocates along the length of the frame on the sliding plate. A cover plate prevents the bushing from dislodging from the fixed base. One end of the bushing has a square shaft insertion hole exposed outside the cover plate. This manual operating mechanism employs an adjustable bushing position design, allowing the bushing to slide in multiple directions within the fixed base. The bushing adapts to the position of the square shaft, preventing jamming between the square shaft and the bushing and ensuring reliable opening and closing of the circuit breaker. It also prevents the bushing from deviating from the center line of the square shaft on the drawer cabinet, enabling quick installation of the bushing and the square shaft of the drawer cabinet.

A break mechanism for a switching apparatus is described that includes a contact driving assembly including a driving part and coupled to a moving contact to drive the moving contact to move between an open and a closed position; a handle assembly adapted to rotate around a pivot shaft and including a relevant driving part and a telescopic driving part keeping a length unchanged during a rotation of the handle assembly in a first rotation direction to drive the contact driving assembly to rotate in a second rotation direction, thereby driving the moving contact to move to the closed position; and an auxiliary assembly coupled to the relevant driving part, and adapted to move to a second position in a first movement direction during tripping of the switching apparatus, thereby causing the handle assembly to rotate in the second rotation direction.

The present invention discloses a remote switch-off mechanism and a rotary switch, and relates to the field of electrical technologies. A housing, an energy storage component, and a tripping component are provided. The energy storage component includes a latch, an energy storage spring, a rotating shaft, and an energy storage panel connected to the rotating shaft, an abutting portion is disposed on the energy storage panel, a first end of the energy storage spring is clamped to the housing, and a second end of the energy storage spring abuts against the abutting portion. The latch includes a hinged portion hinged to the housing, a limiting portion for limiting the second end of the energy storage spring, and a tripping portion that cooperates with the tripping component, and an elastic member is disposed between the latch and the housing, so that the tripping portion has a trend of moving toward the tripping component. The tripping component is configured to enable the limiting portion to release limiting on the second end of the energy storage spring, so that the rotating shaft rotates to a switch-off position. According to the remote switch-off mechanism and the rotary switch in this application, response time during switching of the rotary switch can be improved.

The application discloses a small circuit breaker movable contact connecting structure and a small circuit breaker. The movable contact connecting structure comprises a movable contact and a contact support. A waist-shaped hole is arranged on the surface of the contact support, the waist-shaped hole is used for arranging a first hinged shaft to hinge the contact support to a circuit breaker base, and the contact support can slide along the long axis direction of the waist-shaped hole under the radial limitation of the first hinged shaft; an insertion warehouse for partially inserting the movable contact is arranged on the side wall of the contact support. During the closing process of the small circuit breaker, the contact support is forced to rotate around the first hinged shaft to a preset angle, then the movable contact and the static contact abut against each other, the contact support continues to be forced to make the contact support translate relative to the base, and the first hinged shaft in the waist-shaped hole is relatively translated to the other side along the long axis direction from one side of the waist-shaped hole. The application discards the mode of fixing the movable contact in the traditional circuit breaker, and has the advantages of stable connection and simple structure.

This invention discloses a clamp-type spring operating mechanism and a high-voltage circuit breaker. The mechanism includes a frame, a closing spring module, a transmission system, a opening spring module, a closing latching system, an opening latching system, and an auxiliary switch assembly. The frame is composed of two symmetrical side plates fastened together with connecting blocks. The closing spring is located between the two side plates and is driven by a tray, screw, connector, chain, and coaxial sprocket. The transmission system's large gear assembly is then hinged to the connector. The motor, clutch, multi-stage gear shaft, and output crank arm are integrated within the space enclosed by the side plates. The output crank arm connects to the opening spring module. The closing and opening latching systems are mounted inside the side plates. The auxiliary switch is driven by the output crank arm via a connecting rod. This invention uses a clamp-type frame instead of a cast frame, simplifying processing and reducing cost. It uses a chain, sprocket, and gear shaft transmission instead of a ratchet and pawl structure, resulting in smooth transmission, low noise, and an anti-dry-closing interlocking function. The structure is compact, highly reliable, and suitable for high-voltage circuit breakers.

The utility model discloses a kind of circuit breaker overload protection mechanism, it is related to circuit breaker technical field, specifically for the right end fixed connection of bimetallic strip has soft wire, the upper surface fixed connection of soft wire has contact plate, the right upper side of contact plate is installed with center lever, the lower fixed connection of bimetallic strip close to left end has load wire, the left end fixed connection of bimetallic strip has fine adjustment screw block, the lower installation of bimetallic strip right end has Z-shaped metal sheet.The circuit breaker overload protection mechanism is cooperatively arranged by bimetallic strip, Z-shaped metal sheet, resistance and alarm wire, when bimetallic strip is bent due to overload in the process of using in circuit breaker, Z-shaped metal sheet will be touched preferentially, current output is achieved through resistance and alarm wire, by connecting alarm wire into alarm or emergency device, thereby played the role of alarming or enabling protection device before overload tripping occurs.

The utility model discloses a kind of multi-axis layered linkage blade lever for small circuit breaker, comprising: lever body, it is the special-shaped plate member of integrated molding;Main pivot hole, the lever body can rotate around the main pivot hole;First lateral transmission column, for cooperating with circuit breaker handle or superior linkage member;Second lateral transmission column, set in the middle pivot area;Third lateral transmission column;Wherein, the first lateral transmission column, the second lateral transmission column and the third lateral transmission column are layered arrangement along the lever body height direction, and form stepped overhanging structure in the lever body thickness direction, so that handle linkage member, blade driving member and spring energy storage member can be respectively located in different movement level.This multi-axis layered linkage blade lever for small circuit breaker integrates multiple components on a special-shaped plate lever body, with the characteristics of high part integration, good assembly precision and small movement interference.