1200results about "Switching device condition indication" patented technology

A solid-state circuit breaker comprises an air gap, at least one counter and / or a timer, a memory, a radio and a microprocessor to: retrieve saved health data, alert data and counter, timer data from the memory, determine a status of a heath rating by data and comparing the heath rating to a threshold, if it is poor, send a message via a smart phone application (APP) and start a counter or timer, determine if the counter is at a predefined value and / or the timer is expired, if the counter is at a predefined value and / or the timer is expired, turn OFF the breaker and inhibit from being turned on, send a breaker OFF / disabled alert message using the radio to an end user / a customer via the APP, and if the counter is not at a predefined value and / or the timer is not expired, increment / decrement the counter and / or the timer.

The invention provides a miniature circuit breaker, which comprises a shell, a handle, a connecting rod, a contact support, a lock catch, a lock catch elastic piece and a support elastic piece, and is characterized in that the shell is provided with an indication window; the handle is rotationally mounted on the shell; the connecting rod is provided with a first rod part connected with the handle and a second rod part matched with the contact support; and the contact support is rotationally installed on the shell through a rotating shaft, and a first indicating part which can be arranged corresponding to the indicating window is formed on the contact support. In an opening state, the first indication part of the contact support is arranged corresponding to the indication window. In a switching-on state, the second indicating part of the lock catch corresponds to the indicating window, and the contact support and the lock catch are different in color during injection molding, so that compared with the prior art in which indicating surfaces with different colors need to be processed on the contact support in an ink screen printing manner after injection molding, the production process is simpler, and the production efficiency is improved. And the production cost is reduced.

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.

The invention discloses a molded case circuit breaker, which comprises a shell, and an electric operating mechanism is arranged in the shell. The electric operating mechanism comprises a moving contact action assembly with a rotating block and a shifting rod, a sliding block which is arranged on the shell in a sliding manner and can drive the shifting rod to shift, an operating shaft which can drive the sliding block to slide and is provided with an operating hole site, and a motor speed reduction assembly which can drive the operating shaft to rotate, and the operating shaft is in linkage connection with a shifting shaft block; the sliding block is provided with a matching groove corresponding to the shifting shaft block, the operation shaft rotates to drive the shifting shaft block to shift in the matching groove so as to drive the sliding block to slide, the shell is provided with a cover plate capable of shielding the operation hole position in a sliding mode, and the shell is further provided with a rotating lock and a tripping button located on one side of the rotating lock. By arranging the locking microswitch, the manual microswitch, the first microswitch and the second microswitch, signal feedback of a manual operation state, a rotating lock locking state and a current circuit breaker state can be realized.

The present disclosure provides an indication device for a stored-energy electric operating mechanism of a circuit breaker, and a circuit breaker. The indication device includes a mounting bracket (1); an indicator (2) movably connected to the mounting bracket (1); and an indicator linkage rod (3) movably connected to the mounting bracket (1). A first reset member (4) is connected between the indicator (2) and the mounting bracket (1), and a second reset member (5) is connected between the mounting bracket (1) and the indicator linkage rod (3). The indicator linkage rod (3) and the indicator (2) are linked through a linkage structure. For the indication device according to the present disclosure, when the circuit breaker is opened and the indicator linkage rod (3) moves to an open state position, the indicator (2) is automatically reset to an "OFF" indication state position by the first reset member (4); when the circuit breaker is closed and the indicator linkage rod (3) is automatically reset from the open state position to a closed state position under action of the second reset member (5), the indicator linkage rod (3) drives the indicator (2) from the "OFF" indication state position to an "ON" indication state position through the linkage structure.

The invention discloses a multipath load control acquisition device and system and a load control acquisition method, the device adopts an architecture in which a master device and a slave device cooperate, the master device comprises a master controller, a master communication module, a user display interface and a master interface unit, and the slave device comprises a slave interface unit, a slave controller, an acquisition unit and a slave communication module. Flexible marshalling management is achieved by distributing electronic identity numbers to the breakers, load parameters and the states of the breakers are synchronously collected through the collection unit, a two-way data transmission channel is constructed by means of the master-slave communication module, a control signal is generated based on preset logic and real-time data through the master controller, and the state of the breakers is controlled. And the slave controller issues an instruction to drive the circuit breaker electric operation mechanism to realize millisecond-level rapid switching-on and switching-off operation. According to the invention, the problems of insufficient number of loops, lack of state monitoring, slow response and the like of an existing load control system are solved, and accurate, rapid and intelligent management of multi-path loads on a client side is realized.

A test switch assembly for testing electrical switchboard devices is provided. The test switch assembly includes a test switch including a handle, the handle having a first color. The handle includes a label holder including a front, the label holder defining a label slot in the front, the label slot sized to receive a label. The handle further includes a handle body extending from the label holder and defining a tie bar aperture sized to receive a tie bar configured to connect the test switch with one or more other test switches in the test switch assembly. The test switch assembly further includes an indicator coupled with the handle body of the test switch, the indicator having a second color different from the first color, the indicator exposing the tie bar aperture.

The present disclosure discloses a solid-state circuit breaker, including an electronic switch and a mechanical switch connected in series, the mechanical switch includes: a housing; a handle, rotatably installed to the housing and capable of stopping at an on position, an charged position, and an off position between the on position and the charged position; a movable contact and a stationary contact; and a transmission assembly, configured to transmit a motion of the handle to the movable contact to achieve contact and separation with the stationary contact; upon the handle being in the on position, the mechanical switch is on; upon the handle being in the off position, the mechanical switch is off, and the transmission assembly is in a tripping state; upon the handle being in the charged position, the mechanical switch is off, and the transmission assembly is in a non-tripping state.

The utility model relates to the technical field of circuit breaker control, in particular to a linkage type control mechanism applied to a primary and secondary deep fusion circuit breaker, which comprises a circuit breaker body. The circuit breaker body comprises a transverse circuit breaker box body, a first pole fixed at the upper end of the transverse circuit breaker box body, a control box body fixed at the front end of the transverse circuit breaker box body, and a second pole fixed on the inclined surface of the upper end of the control box body. According to the linkage type control mechanism applied to the primary and secondary deep fusion circuit breaker, the gap between the isolation disconnecting link and the control box body can be changed according to needs by adopting a gap adjustable structural design, so that the linkage type control mechanism is more diverse in application range, convenient to assemble and high in structural stability; the tension sensor is installed at the connecting end of the reset spring and the inner side wall of the control box body, tension of the reset spring at different positions can be monitored in real time, and therefore the control position of the isolation switch can be found in time.

The present invention relates to a circuit breaker with a thermal overload alarm and non-tripping function, and relates to the field of low-voltage power distribution equipment. The circuit breaker includes a thermistor RP1, an operational amplifier U1A, an operational amplifier U1B, an operational amplifier U2A, an operational amplifier U2B, a voltage divider circuit, a resistor R7, a resistor R3, a diode D2, a diode D3, and a resistor R8. The circuit part of the present invention uses a thermistor to monitor the temperature of the heating element in real time, and can promptly feedback whether the main circuit current is overloaded. According to the heating characteristics of different circuit breaker products, the overload point can be flexibly adjusted to adapt to different application scenarios and load requirements. The design combining circuits and mechanical mechanisms improves the accuracy of the alarm and reduces the possibility of false alarms.

The invention provides an electric operating device, which is used for driving a switch handle on a circuit breaker to open or close, and comprises an outer shell which comprises a display cover arranged on one side; the switch handle is used for driving a circuit breaker to be switched off or switched on, and the switch handle is arranged on one side far away from the display cover; the operation board is arranged in the outer shell and is used for manually driving the switch handle to work; the connecting assembly is arranged in the outer shell and is used for electrically driving the switch handle to work; and the control circuit board is electrically connected with the connecting assembly so as to control the connecting assembly to work. According to the electric operating device, electric automatic control can be achieved, manual control can also be achieved, the structure is compact, use is convenient, and safety is high.

The invention belongs to the field of switch state indicating devices, and particularly provides a circuit breaker opening and closing indicating structure, a circuit breaker and a switch cabinet. According to the indicating structure, the limiting hole is formed in the mechanism box body, the stroke of the opening and closing indicating piece is limited through the limiting hole, and the opening and closing indicating piece is limited at the correct indicating position. Meanwhile, the elastic piece is connected to the driving mechanism for driving the opening and closing indicating piece to swing, the stroke of the output shaft of the circuit breaker is compensated through deformation of the elastic piece, and normal opening and closing of the circuit breaker are guaranteed. The circuit breaker comprises the indication structure. The switch cabinet comprises the circuit breaker.

The invention discloses an overvoltage suppression method for opening operation of a circuit breaker, and the method comprises the steps: monitoring the transient voltage change of each key node of a system in an opening operation process; a distributed multi-point suppression mode is selected according to the node voltage state, and the opening angle of the circuit breaker is adjusted according to the voltage and current state detected in real time; under the condition that transient overvoltage occurs, line impedance is instantaneously adjusted to delay voltage rise, and a small capacitor is added in an opening loop to perform instantaneous voltage absorption; based on the fault feature analysis of the line, an impending overvoltage is warned and an adaptive adjustment operation is triggered. According to the method, the reliability of overvoltage suppression is improved, the fault risk of power equipment is reduced, the overall stability and operation safety of a power system are further enhanced, and the method has high application and popularization value.

The invention relates to the technical field of leakage protectors, in particular to a leakage protector convenient to install and capable of using electricity safely, which comprises a leakage protector main body, a plurality of wire inlet holes used for connecting wires are formed in the outer side of the top of the leakage protector main body, and binding mechanisms are fixed to the tops and the bottoms of the outer sides of the wire inlet holes. The binding mechanism comprises a supporting plate, two connecting rods are rotationally arranged at one end of the supporting plate, and a rubber wheel is rotationally arranged between the two connecting rods. According to the electric leakage protector, the pulling resistance of the wire is increased through the two rubber wheels, the phenomenon that the wire is pulled off is reduced, when the wire is pulled by large force to move, a copper wire of the wire moves into the elastic bag, an electric shock accident is prevented, and the use safety of the electric leakage protector is improved; and meanwhile, the rubber wheel rotates and winds the traction belt along with the movement of the wire, the traction belt pulls the elastic bag to tension the outer side of the elastic bag, and a user observes the tensioning phenomenon of the elastic bag to conveniently check whether the wire is pulled out of the mounting position.

The utility model discloses a switch-on and switch-off state monitoring module of an external circuit breaker of an electric energy meter, which comprises a shell, a rotating body, a circuit board, a position sensing device and an electric actuating mechanism used for controlling switch-on and switch-off of the circuit breaker are arranged in the shell, and the rotating body is in transmission connection with the electric actuating mechanism. The position sensing device comprises a first position sensing unit arranged on the rotating body and two second position sensing units arranged on the circuit board, and the first position sensing unit can move between the positions matched with the two second position sensing units to sense along with rotation of the rotating body. And when the circuit breaker is in an opening state and a closing state, the first position sensing unit is respectively located at positions correspondingly sensed by the two second position sensing units. The device can be integrated on the external circuit breaker of the electric energy meter, and has the advantages of simple and compact structure and high reliability.

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 relates to the technical field of circuit breakers, and discloses a circuit breaker with a measuring function, which comprises a shell, a circuit breaker system is arranged in the shell, terminals are uniformly arranged in the shell, the outer wall of the shell is rotatably connected with a rotating rod, one end of the rotating rod is fixedly provided with a pinching handle, and the other end of the rotating rod is fixedly provided with a handle. The other end of the rotating rod is symmetrically and fixedly provided with a metal plate, one side of the metal plate is fixedly provided with a plurality of contact pieces, the outer walls of the contact pieces are arranged at one end of the terminal, the terminal is internally provided with a clamping groove, the contact pieces are located in the clamping groove of the terminal, and the other side of the metal plate is fixedly provided with a conduction rod. Through cooperation of the pinching handle, the rotating rod, the metal plate and the contact piece, stable opening and closing operation can be achieved, the operation structure is simplified, opening and closing are achieved through simple rotation operation of the pinching handle and the rotating rod, the fault risk caused by complex mechanical transmission is reduced, and the problem that faults are likely to occur in opening and closing of the circuit breaker is solved.

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.

A circuit breaker with a sensor comprises a thin film pressure sensor, a closing latch, a spring, an energy storage rocker arm, a pull rope, a shell, a through hole, a fixing frame, a rotating shaft, a worm gear, a motor, a worm and a controller. According to the invention, the thin film pressure sensor is arranged, when the spring is fatigued, the pressure on the closing latch is reduced, and when the pressure value detected by the thin film pressure sensor is smaller than the set value, the thin film pressure sensor sends a signal to the controller, and the controller starts the motor, so that the worm gear rotates; the spring is stretched, so that the elastic potential energy stored by the energy storage mechanism is improved, and the normal work of the circuit breaker is ensured; therefore, the normal use of the circuit is prevented from being influenced by frequent replacement of the spring.

The utility model provides a circuit breaker and power equipment. The circuit breaker comprises a shell, an operating handle, an operating mechanism, a moving contact assembly and a static contact. The moving contact assembly comprises a main shaft and a rotating rod which are rotatably connected with the main shaft. The moving contact is located at one end of the rotating rod away from the operating mechanism. The operating handle can control the operating mechanism to drive the main shaft to rotate, so that the moving contact is contacted with or separated from the static contact. The main shaft is provided with a boss, and the boss is used for driving the rotating rod to rotate, so that the moving contact is separated from the static contact. The main shaft is provided with a driving lever, and the driving lever can switch on or switch off the first microswitch. When the circuit breaker is in a closed state, the boss and the rotating rod are arranged in a spaced mode, and the shifting rod presses the first microswitch to enable the first microswitch to be kept on. During opening, the operating mechanism drives the main shaft to rotate, so that the driving lever is far away from the first microswitch and is disconnected before the moving contact is separated from the static contact, and the first microswitch switches a sent signal to adjust the voltage state of the power equipment in advance and ensure the stability of the output voltage.

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker state indication structure and a circuit breaker, and the structure comprises a jump buckle, a lock buckle and an indication member which are different in color. In the switching-on state, the jump pin and the lock catch are locked and matched, and the jump pin moves to push the indicating piece, so that the lock catch moves to the position below the window to display the switching-on state. In the opening state, the jump pin and the lock catch are locked and matched, the lock catch moves to be separated from the lower part of the window, and the jump pin moves to push the indicating piece, so that the indicating piece slides to the lower part of the window to display the opening state; in the tripping state, the jump pin and the lock catch are unlocked, the lock catch moves to be separated from the position below the window, and the jump pin moves to the position below the window so as to display the tripping state. According to the application, a special state indicating piece is reduced, the transmission relation is simplified, and the display of three states is completed through the jump pin, the lock catch and the indicating piece, so that the transmission stability of each component is improved, the overall thickness of the indicating structure is reduced, and the three states of the circuit breaker are conveniently and accurately distinguished.

The utility model relates to an electric leakage fault indicating mechanism of an electric leakage circuit breaker, which comprises a shell, a handle, a contact frame, a jump pin, a lock catch, a U-shaped pull rod, an electric leakage tripper and a tripping piece, the tripping piece acts along with an ejector rod of the electric leakage tripper and abuts against the lock catch, linkage matching of the lock catch and the tripping piece is formed, and a tripping indicating piece is arranged on the shell in a sliding mode. An indicating hole is formed in the position, corresponding to the tripping indicating piece, of the shell, the tripping indicating piece is provided with a linkage piece extending between the jump pin and the contact frame, the jump pin is provided with a protruding block matched with the linkage piece, the protruding block acts along with the jump pin and abuts against one side of the linkage piece, and linkage matching of the tripping indicating piece and the jump pin is formed. The contact frame is provided with a protruding strip matched with the linkage piece, the protruding strip acts along with the contact frame and abuts against the other side of the linkage piece, and linkage matching of the tripping indicating piece and the contact frame is formed. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and accurate indication.

The present application provides an operating mechanism and a circuit breaker. The operating mechanism includes: a handle, an energy storage component and an indication window. The handle is connected to the contact assembly, and the handle rotates to drive the contact assembly to perform an opening action or a closing action. The energy storage component is connected to the handle, and when the contact assembly performs an opening action or a closing action, the energy storage component rotates together with the handle. The energy storage component abuts against the contact assembly, and the energy storage component is used to control the automatic closing of the contact assembly. The indication window is arranged on the housing. A first indication part is provided on the energy storage component. When the contact assembly performs an opening action, the first indication part can be seen in the indication window. The energy storage component is provided with a first indication part. When the contact assembly performs an opening action, the first indication part can be seen in the indication window, and there is no need to provide an additional indication structure in the circuit breaker, thereby saving assembly space in the circuit breaker.

The invention provides an electromagnetic leakage protection circuit breaker which comprises a shell, a shell cover, a short-circuit protection unit installed on the shell, a test device, a contact assembly and an operation device used for opening or closing the circuit breaker, and further comprises a leakage protection unit. The electric leakage protection unit comprises an electric leakage tripping mechanism and a transmission assembly which is in transmission fit with the operating mechanism, the electric leakage tripping mechanism comprises a base, an electromagnetic tripper, a tripping rod, a buckle plate, a spring seat, a positioning piece and a reset piece which are installed in the second cavity, and the base is provided with a first connecting column which is in pivot fit with the tripping rod; the base is provided with a second connecting column which is pivoted and matched with the reset piece and located below the first connecting column, the tripping rod is provided with a first limiting groove, the reset piece is sleeved with a first torsional spring, one end of the first torsional spring is located in the first limiting groove and abuts against the inner wall of the first limiting groove, and the other end of the first torsional spring abuts against the end of the reset piece. According to the electric leakage tripping mechanism, all parts are uniformly stressed, and tripping is stable.

A bidirectional operation mechanism for a switching device and a switching device assembly. The bidirectional operation mechanism includes: a housing; an operation handle; a first driving member, rotatably installed to the housing, fixedly connected to the operation handle and capable of rotating together with the operation handle; a second driving member, rotatably installed to the housing, operatively connected to the first driving member on one hand, and operatively connected to the switching device on the other hand, upon an external force acting on the operation handle to drive the operation handle rotate between the closed position and the open position, the operation handle drives the first driving member to rotate together, so that the first driving member abuts against and drives the second driving member to rotate, thereby enabling the switching device to perform a closing operation and an opening operation, upon the switching device performing the closing operation and the opening operation under an action of a driving force of the switching device itself, the switching device is able to drive the second driving member to rotate, so that the second driving member abuts against and drives the first driving member to rotate, thereby driving the operation handle to rotate, so as to indicate the closed position or the open position.

The invention discloses a circuit breaker switch and intelligent detection system with real-time detection, which comprises a circuit breaker body, a contact system, an arc extinguishing system and an operating mechanism are arranged in the circuit breaker body, the contact system comprises a moving contact and a static contact, the bottom of the moving contact is fixedly connected with a bimetallic strip through a soft connecting line, and the bimetallic strip is fixedly connected with the arc extinguishing system through the soft connecting line. The invention relates to the technical field of circuit breakers. According to the circuit breaker switch with the real-time detection function and the intelligent detection system, a bimetallic strip is connected to the bottom of a moving contact, one end of the bimetallic strip is connected with a connecting piece made of a copper-molybdenum composite material, a box body made of red copper is installed at the bottom of the connecting piece, tin-bismuth alloy is injected into the box body, a heat pipe is attached to the bottom of the box body, and heat dissipation fins are installed at one end of the heat pipe. And the copper-molybdenum composite material connecting sheet has extremely low thermal expansion and high thermal conductivity, so that the efficient transfer of heat can be ensured, and the influence of thermal expansion on the structural stability can be reduced.

A leakage protection circuit breaker comprises a leakage protection pole and at least one circuit breaker pole arranged side by side, wherein the leakage protection pole comprises a zero-sequence current transformer, an electronic component board, a leakage release and an indication mechanism, and a leakage power supply contact group consisting of a moving contact and a static contact, wherein the leakage power supply contact group consisting of the moving contact and the static contact is connected in series in a power supply circuit for supplying power to the electronic component board and / or the leakage release; the circuit breaker pole comprises a handle, an operating mechanism, a moving contact and a static contact, wherein the moving contact is connected to the operating mechanism, wherein when the indication button is located at a first indication position, the contact member and the static contact member are driven to contact, and when leakage occurs, the leakage release iron core is actuated to trigger the operating mechanism of the circuit breaker pole to release, and at the same time, the leakage release iron core drives the indication button to switch from the first indication position to the second indication position, and when the indication button moves to the second indication position, the moving contact member is separated from the static contact member, thereby preventing the leakage release and the electronic component board from burning.

The invention relates to the technical field of thermal protectors, in particular to a high-temperature quick-response temperature protector, which is characterized in that a first lead and a second lead sequentially pass through a moving contact, a moving contact, a static contact and a bottom plate to form a circuit path, and a temperature sensing element senses the change of circuit temperature and bends when reaching a threshold value; and the bending deformation of the temperature sensing element is converted into mechanical power to push the jacking column to move and jack up the movable contact piece, so that the connection between the movable contact and the static contact on the movable contact piece is separated, and the disconnection of a circuit is realized. The shell serves as an external supporting structure of the protector to ensure stable installation and effective heat dissipation of internal components, a bottom plate and a moving contact in the internal components of the shell are located on the upper side and the lower side of a fixing base respectively, a top column arranged in the fixing base and the fixing base are both made of insulating materials, and the fixing base is made of ceramic materials and integrally formed. And the temperature sensing element is arranged on one side of the fixed seat and monitors the temperature of the bottom plate, so that accurate monitoring and quick response to the temperature of the circuit are ensured.

A circuit breaker monitoring system includes a vibration sensor, a processing unit, and an output unit. The vibration sensor is mounted to a circuit breaker and acquires temporal vibration data over at least a portion of a closing operation of the circuit breaker, which portion includes movement of a moveable contact towards a fixed contact. The vibration sensor provides the temporal vibration data to the processing unit, which converts the temporal vibration data into frequency vibration data and determines a vibration signal and a plurality of spectral indicators or a plurality of spectral points based on the vibration signal. The processing unit determines an indication of operational functionality of the circuit breaker the output unit outputs information relating to the indication of operational functionality of the circuit breaker.