66results about "Protective switch distinguishing marks" patented technology

A movable reference guide mounted to slide over a circuit breaker reference chart on the door of a circuit breaker box to visually mark individual circuit breaker labels on the chart, and indicator lights associated with each of the circuit breakers on the breaker panel opposite the door, the indicator lights responsive to the position of the guide on the reference chart to light up when their corresponding labels are marked by the guide. In the preferred form the guide includes a magnifier lens to enlarge the writing on the labels.

A device for indicating the failure of an electric apparatus comprises an indicator, a fastener and a spring; the indicator and the fastener are arranged in the base of the electric apparatus; the indicator and the fastener are provided with a buckling-locking surface and a locking-buckling surface which are capable of realizing self-locking respectively; the indicator is provided with a white indicating surface representing a normal situation and a red indicating surface representing a failure situation; and the spring provides suitable self-locking force for the indicator and the fastener and provides a driving force for the indicator to be converted from a normal state to a failure state. When manually opening and closing the brake, the white indicating surface is always locked in the window of the base so as to indicate that the electric apparatus is in a normal state; when the electric apparatus fails and trips, the indicator and the fastener are released and rotate under the action of the elastic force of the spring so that other red indicating surfaces enter the window of the base so as to indicate that the electric apparatus is in a failure state; and the memory of the indicating state is not finished until the manual closing operation of the electric apparatus is carried out. The failure indication device has simple structure, good safety and reliability, low preparation cost and wide applications.

An interface assembly is for an electrical switching apparatus. The electrical switching apparatus includes a housing, a first handle partially extending through the housing, separable contacts located within the housing, an operating mechanism to open and close the separable contacts, a main printed circuit board located within the housing, and a number of electrical rating settings associated with the main printed circuit board. Each of the electrical rating settings has a magnitude. The interface assembly includes: a base assembly comprising a base, the base being disposed on the housing, the base having a mounting surface; and a second handle coupled to the mounting surface, the second handle and the first handle being structured to drive each other. The mounting surface has at least one port. The magnitude of a corresponding one of the electrical rating settings is visible through the at least one port.

In an air circuit breaker, in order to provide a position indicating apparatus of a draw out type air circuit breaker which is capable of distinguishing a position of a breaker body accurately even a user can not distinguish colors by improving a structure for indicating a position of the breaker body, in a position indicating apparatus of an draw out type air circuit breaker comprising a lead bar rotatably placed at a base frame and moving in a direction opposite to a moving direction of a lead screw by abutting to one wall surface of a cradle and a cam connected to the lead bar and rotating by the linear movement of the lead bar, the position indicating apparatus includes a movable plate connected to the cam and converting the rotation of the cam into the vertical linear motion, an indicating cam connected to the movable plate, converting the vertical linear motion of the movable plate into the rotation motion and having a portion indicating a position of the breaker body according to the rotation, and a front plate placed at the front of the movable plate and selectively indicating a position of the breaker body according to the rotation of the indicating cam.

Disclosed is a position indicating device for a pull-out type circuit breaker used to cut off a current, the position indicating device including a position indicating plate installed at a lower surface of the circuit breaker to be rotatable up and down and having an arrow marked thereon, an indication supporter installed at a cradle and having stepped pressing surfaces for pressing up the position indicating plate, and a frame portion of a movable carriage, the frame portion having windows for externally showing a rotated state of the position indicating plate, whereby when the circuit breaker is docked with the cradle, the position to indicating plate is rotated by the indication supporter so as to indicate the position of the circuit breaker through the windows, thereby allowing a fast and precise recognition of the position of the circuit breaker.

A frame module for a circuit breaker includes a first interface structured to connect to a trip unit, a second interface structured to connect to a frame, and a current rating storage unit structured to store a current rating associated with the frame and to provide the stored current rating to the trip unit when the trip unit is connected to the first interface.

The present invention discloses an identification system for identifying the correct position of various circuit breaker accessories (120, 130) within a recess (24) of a circuit breaker molding frame (12). The system includes groove symbols (26) adjacent grooves (24) in the frame (12) that match fitting symbols (52) located on front visible surfaces (122, 132) of fittings (120, 130). The system may also include a name tag (90) on the accessory (120, 130) for indicating a name (98) of the accessory. The invention also discloses a circuit breaker (10) using the identification system of the invention.

The device (1) has switching contacts that close and / or open an electric circuit. A tripping apparatus is provided for automatically disconnecting the switching contacts, and a housing (2) has a front side, onto which a cover cap (4) is clipped. The cover cap has a latch engaged into a locking groove that is arranged at the housing. The housing has a housing projection that forms the front side.

A sensor for measuring current of the Rogowski-torus type including a carrier made of a magnetic materials and a secondary winding wound on the carrier in order to deliver an electrical signal representative of a current flowing in a conductor passing through the interior of the torus. The carrier is made essentially of a moulded rigid plastic material and includes at least one exterior recess distributed over the length of the body of the carrier. The recess includes at least two grooves that are separated by a partition The protecting and measuring device and the electric circuit breaker include such a current sensor.

A tag for attachment to a circuit breaker is formed from a sheet of plastic material having first and second notches, one or more catches corresponding to one or more apertures, an electronic security device and a plurality of parallel grooves extending between the edges to form a plurality of sections. The tag is assembled by folding the sheet of plastic material so that the end sections overlap and the apertures fixedly receive the catches to secure the tag in a closed position. The notches in the first and second top sections form an opening, which is adapted for receiving the circuit breaker switch.

The invention relates to a status identification device of a breaker driving mechanism, which comprises a housing and a panel fixedly connected to the housing, wherein a main shaft connected with a transmission mechanism is arranged in the housing; one end of the main shaft is provided with a status identification disk; the panel is provided with a display window corresponding to the status identification disk; the other end of the main shaft is provided with a cam wheel provided with a roller wheel; the roller wheel is sheaved in a slider component slidingly matched on a linear guide in the housing; the status identification disk is provided with three kinds of status identification; and an electric signal collecting device matched with the cam wheel is arranged in the housing, and is connected with an electric display device arranged on the panel through a circuit. The invention can accurately identify the real time working status of the driving mechanism, and the switching on, the switching off and the releasing of the breaker. Users can conveniently analyse a circuit. The invention has the advantages of simple structure, reliable performance and small occupation space.

The invention provides a plug-in switch device with a concave surface. The plug-in switch device comprises a shell, wherein the whole shell is in a long-strip rectangular shape, a groove is formed inthe side surface of the shell, a product nameplate is arranged in the groove, an operation end and a wire inlet / outlet end are arranged on the front side end surface of the shell, a signal port and awire inlet / outlet clamping port are formed in the rear side end face, and a buckle and a positioning groove are formed in the bottom face. According to the invention, a positioning face and a groove structure are arranged on the two sides of a shell, wherein the air circulation amount can be increased through the arrangement of the groove, so that work of parts at the over-high temperature is reduced, and the long-term use reliability of a product is improved; and a mark surface and a nameplate surface placing surface are changed, and the product nameplate is arranged in the side groove structure so as to reduce abrasion to the nameplate structure in the installation process and prevent the influence on product appearance and product model information identification caused by nameplate abrasion, so that complaints of a client using end on a product due to the marking face and the nameplate are reduced, and the good development prospect is achieved.

The invention discloses a low-voltage circuit breaker which comprises a circuit breaker body, wherein the positive end surface of the circuit breaker body is provided with a circuit breaker switch; the front end surface of the circuit breaker body and the outer surface of the circuit breaker switch are respectively provided with a noctilucent layer; a water-resistant outer cover is arranged outside the circuit breaker body; the water-resistant outer cover comprises an outer cover body and an outer cover capping plate; the circuit breaker body is arranged inside the outer cover body; and the inner surface of the outer cover body is provided with a drying pack. By adopting the above mode, the low-voltage circuit breaker has a noctilucent function; and in case of tripping at night, the circuit breaker switch can be easily found by people. Besides, the low-voltage circuit breaker has the functions of water resistance and moisture resistance, and the service life of the circuit breaker can be prolonged.

The invention discloses an instant trip mechanism for a minitype circuit breaker. Because a spring and an adjusting lever for changing spring elasticity are mounted on one side of a flexible center, motion current of the flexible center is changed, instant motion characters "B / C / D" can be changed and assembly procedures of products are simplified. When an instant motion curve is changed, the instant trip mechanism can easily select the instant characters, so that user convenience can be increased.

The present invention relates to a communication module plug-in device for an electronic trip unit including both wired and wire-less conventional communication methodologies. The device comprising a housing, the housing being structurally configured for the releasable connection to an electronic trip unit, wherein the housing further facilitates the electronic communication between the communication plug-in device and the electronic trip unit. The device also comprises a communication controller that is situated within the housing, a transceiver situated within the housing, wherein the transceiver is in communication with the communication controller, and a memory storage device situated within the housing, the memory storage device being in communication with the communication controller and the transceiver.

The invention discloses an intelligent monitoring air switch. The intelligent monitoring air switch comprises a temperature detection mechanism, a current sampling mechanism, a short circuit fault detection mechanism, a safety protection cover and a handle state display mechanism. The short circuit fault detection mechanism is arranged at the end, close to a shell, of an electromagnetic release and judges whether a short circuit occurs or not by judging the current action state of the electromagnetic release, the safety protection cover can detect whether a cover body is opened or not while protecting a handle from being touched inadvertently, and the handle state display mechanism enables the current state identification of the switch to be eye-catching through the light emission of an LED lamp. The intelligent monitoring air switch has the beneficial effects that the short circuit fault detection mechanism is arranged on one side of the electromagnetic release, when short circuit occurs, a magnetic core acts, a second connecting rod can touch a travel switch, and therefore short circuit signals are sent to external equipment through the travel switch, and workers can clearly knowthat the short circuit occurs in the circuit; and the safety protection cover is arranged outside the shell, and can be used for judging whether the circuit has an overload fault or not while the handle is protected from being touched inadvertently.

A flexible amperage flag that indicates an amperage rating of a trip unit in a circuit breaker. The flag is molded with a housing of the trip unit so that it remains with the trip unit even when installed into a different circuit breaker. The flag includes an attachment member secured to a wall of the trip unit and a flexible leg integral with the attachment member. A top surface member indicates the amperage rating and protrudes through an auxiliary cover of the circuit breaker so as to be visible through the panelboard into which the circuit breaker is installed and is connected to the top surface member. During a circuit interruption, the pressure created by the exploding gas forces the auxiliary cover away from the trip unit, creating stress on the flag. The flexible leg permits the flag to move with the auxiliary cover and return to its original form without breaking. The flag can also include a second leg that prevents movement of a hammer of the trip unit out of its pre-assembled position during assembly of the circuit breaker.

The invention discloses a composite air switch with an adjusting device and a control method thereof, which relate to the technical field of air switches, in particular to a composite air switch withan adjusting device and a control method thereof. The composite air switch with an adjusting device comprises an air switch, an upper through hole, a lower through hole, an indicator lamp, a waterproof film, a sealing layer, a dustproof layer, an insulating layer and a mounting frame, wherein the upper through hole, the lower through hole and the indicator lamp are arranged on the air switch; theupper through hole is formed in the upper side of the front surface of the air switch; and the lower through hole is formed in the lower side of the front surface of the air switch. After the technical scheme is adopted, the composite air switch with an adjusting device has the beneficial effects that as the insulating layer is arranged, direct contact between a circuit in the air switch and a human body can be isolated, an insulation role is played, electric leakage can be prevented, and accidental electric leakage to injure a human being is avoided; as the waterproof film is arranged, a waterproof role is played, and the air switch can be protected; and as the dustproof layer is arranged, a dustproof role is played, dust can be prevented from entering the air switch, and the service lifeof the air switch is prolonged.

The invention relates to a novel leakage current detection breaker, comprising a shell, a fire prevention lead unit arranged in the shell, a leakage current detection unit and a tripping action mechanism, wherein, the fire prevention lead at least comprises a phase line core wire and a zero line core wire which are packed by a copper mesh shielding layer and are used for being combined with a phase line and a zero line in an electric power circuit; the leakage current detection unit is connected with the phase line core wire and the zero line core wire of the fire prevention lead unit and generates a tripping trigger signal when leakage current exists; the tripping action mechanism is used for cutting off the power supply of an electrical appliance when acquiring the tripping signal; the leakage current detection unit comprises a rectification subunit and a tripping signal generating subunit, wherein, the rectification subunit is a pair of rectification elements respectively connected with the phase line and the zero line, and the tripping signal generating subunit is connected with the rectification subunit and is used for offering the tripping trigger signal to the tripping action mechanism when the leakage current exists.

An electrically insulative case includes a door arranged to move between an opened position and a closed position and a rack mechanism arranged to move between an ON position and an OFF position. The electrically insulative case further includes an interlock including a plunger arranged to move between a locked position and an unlocked position. The interlock also includes an engagement mechanism that is coupled to the plunger. The engagement mechanism is arranged to move between a first position in which the engagement mechanism is spaced from the rack mechanism and a second position in which the engagement mechanism is engaged with the rack mechanism. The door is inhibited from moving to the opened position when the plunger is in the locked position. The plunger is arranged to move to the locked position when the engagement mechanism is in the second position and the rack mechanism is in the ON position.

The embodiment of the invention provides a power distribution system and a circuit breaker position acquisition method. The power distribution system comprises a plug-in frame, a single board located in the plug-in frame and at least one circuit breaker, wherein the single board comprises a plurality of slots, a position signal acquisition device is arranged on the single board, and is used for acquiring the address of any slot on the single board, the first end of each circuit breaker extends into the plug-in frame and is plugged in the slot position of the single board, the second end of each circuit breaker is located at the opening end of the plug-in frame, the opening end of the plug-in frame is provided with an address code, the address code corresponds to the address of the slot position on the single board, and each circuit breaker corresponds to at least one address code. According to the invention, the problem that the existing power distribution system cannot confirm the specific position of the fault circuit breaker is solved.

The invention relates to the technical field of photovoltaic protection circuit breakers, in particular to a pluggable photovoltaic protection circuit breaker. In order to solve the problems that on-site secondary wiring of an existing photovoltaic protection circuit breaker is tedious and errors are prone to occurring, the technical scheme includes that the photovoltaic protection circuit breaker comprises a middle cover, an opening and closing indicator, a release and a base, a face cover is fixed to the middle cover through a bolt, a motor is fixed to the interior of the middle cover through a bolt, and a cam is fixed to the output end of the motor; the cam is eccentrically and rotationally connected with a connecting rod, the base is fixed in the middle cover, and the base is provided with an arc extinguishing system, a contact system, an electromagnetic system, a current transformer, a zero sequence transformer, a temperature sensor, a handle, a transmission part and a traction rod. According to the invention, data of a plurality of photovoltaic grid-connected special protection switches can be connected, collected and uploaded, the structure is compact, installation and use are convenient, the size of a distribution box body is reduced in application, wiring is simplified, the construction cost can be greatly reduced, and intelligent remote management of grid-connected point protection switches is realized.

The invention discloses a miniature circuit breaker false closing prevention device, which belongs to the technical field of power equipment and comprises an electric operating mechanism cover, and a turbine, a pinion, a bull gear and a handle gear are sequentially mounted in the electric operating mechanism cover and are in meshing transmission with one another. A tripping push rod is installed in the electric operating mechanism cover and located on the upper right portion of the large gear, a padlock pull hook is installed at the top end of the inner side of the electric operating mechanism cover and abuts against the tripping push rod, and a jump buckle and a reset spring are installed in the electric operating mechanism cover. When the circuit breaker is switched on, the tripping push rod moves upwards and pushes the circuit breaker lock catch to be separated from the jump pin, the circuit breaker trips under the action of the reset spring, then the safety padlock is additionally arranged at the round hole in the top of the padlock pull hook, the padlock pull hook cannot be reset downwards after the padlock is used for locking, false closing of the circuit breaker is prevented, and therefore safety accidents are effectively reduced.