The present invention relates to an enclosed type electromagnetic switch having a status indication function, and more particularly, to and enclosed-type electromagnetic switch having a status indication function that can show the electromagnetic switch's status on an enclosure.

A device with “plug-in” receptacle that mounts in a breaker panel. The plug receptacle receives a power cord inserted by the operator. The device includes a multifunction circuit interrupt that offers overload, thermal, and ground fault (GFCI) protection for the operator in hazardous environments such as garages, shops and spider boxes at construction sites. The devices may include a networkable node or port and onboard comm circuitry that is compatible with a wired or wireless TOT network. In another embodiment, a dummy breaker body includes a plug receptacle with a GFCI interrupt circuit but no direct electrical connection to the hot bus bar, and is wired in series with a conventional circuit breaker module in a breaker panel. Using solid state electronics, the GFCI panel-mounted devices may be configured to perform an automatic fault test prior to each use. Network systems using smart breaker devices are described.

A magnetic trip device comprises an actuator coil part having a plunger; an output plate configured to rotate in a first direction by the pressing of the plunger; a micro switch configured to output an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism configured to rotate to a first position for pressing the operation lever portion and a second position for releasing the operation lever portion; a driving lever bias spring for elastically pressing the switch driving lever mechanism; an automatic reset mechanism for pressing the plunger to the retracted position; a driving lever latch configured to rotate to a restraining position for preventing the switch driving lever mechanism from rotating to the first position, and a release position; and an avoiding portion formed on the output plate to avoid contacting with the switch driving lever mechanism.

The present disclosure relates to a magnetic trip device for a circuit breaker capable of maintaining fault information indication until a user removes the cause of an accident subsequent to a trip operation and resets the magnetic trip device. The device comprises an actuator coil part having a plunger; an output plate; a micro switch outputting an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism rotating to press and releasing the micro switch; a driving lever bias spring elastically biasing the switch driving lever mechanism to rotate; an automatic reset mechanism pressing the plunger to a retracted position; and a driving lever latch rotating to a restraining position for preventing the switch driving lever mechanism from rotating to a first position, and a release position allowing the switch driving lever mechanism-to rotate to the first position.

An auxiliary switch includes a housing including a first housing part and a second housing part separate from and releasably connected to the first housing part. A printed circuit board is fixedly mounted within the housing and has an electrical pad and an electrical contact connected to the electrical pad. A terminal conductor is electrically connected to the printed circuit board. An actuator mechanism is mounted within the housing and has an electrical contactor engaged to the terminal conductor. The actuator mechanism is configured to move within the housing and at least partially displace the electrical contact while maintaining engagement between the contactor and the terminal conductor.

The present invention relates to an enclosed type electromagnetic switch having a status indication function, and more particularly, to and enclosed-type electromagnetic switch having a status indication function that can show the electromagnetic switch's status on an enclosure.

A magnetic trip device according to the present disclosure comprises an actuator coil part having a plunger; an output plate configured to rotate in a first direction by the pressing of the plunger; a micro switch configured to output an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism configured to rotate to a first position for pressing the operation lever portion and a second position for releasing the operation lever portion; a driving lever bias spring for elastically pressing the switch driving lever mechanism; an automatic reset mechanism for pressing the plunger to the retracted position; a driving lever latch configured to rotate to a restraining position for preventing the switch driving lever mechanism from rotating to the first position, and a release position; and an avoiding portion formed on the output plate to avoid contacting with the switch driving lever mechanism.

An auxiliary switch includes a housing including a first housing part and a second housing part separate from and releasably connected to the first housing part. A printed circuit board is fixedly mounted within the housing and has an electrical pad and an electrical contact connected to the electrical pad. A terminal conductor is electrically connected to the printed circuit board. An actuator mechanism is mounted within the housing and has an electrical contactor engaged to the terminal conductor. The actuator mechanism is configured to move within the housing and at least partially displace the electrical contact while maintaining engagement between the contactor and the terminal conductor.

The magnetic trip device for the circuit breaker of the invention comprises an actuator coil part having a plunger; an output plate configured to rotate in a first direction; a micro switch configured to output an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism configured to rotate to a first position for pressing the micro switch and a second position for releasing the micro switch; a driving lever bias spring configured to elastically bias the switch driving lever mechanism to rotate to the second position; an automatic reset mechanism configured to press the plunger to the retracted position; and a driving lever latch configured to rotate to a restraining position for preventing the switch driving lever mechanism from rotating to the first position, and a release position for allowing the switch driving lever mechanism to rotate to the first position.

An on-load tap changer for a tapped transformer has a controller configured to actuate the on-load tap changer; and a storage unit. A method of operating the tap changer includes: carrying out a switching operation of the on-load tap changer by the controller; updating at least one data record stored in the storage unit depending on the switching operation carried out; checking on a basis of the updated data record whether a locking condition is met, by the controller; and blocking further switching operations based on determining that the locking condition is met, by the controller.