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.

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.

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.

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 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 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.