Abstract:
A overload protection switch with a reverse restart switching structure that has a seesaw lampshade provided with a protruding block which extending downward from the outside of the seesaw lampshade to ensure that the seesaw lampshade and the moving rod are accurately positioned in the ON and OFF positions in the housing to form a three-stage switching type with bidirectional positioning and forms an overload protection switch that can continuously maintain sufficient insulation distance and does not reduce the insulation distance due to fatigue decay of the binary alloy conductive plate.
Abstract:
A trip control circuit for a circuit breaker which provides for self-diagnostics includes a normally opened trip contact, a tripping circuit, and a signal light in series with the tripping circuit and the trip contact. The trip control circuit also includes a flasher circuit constructed and arranged to provide signaling of an abnormal condition of a circuit breaker to the signal light, while permitting the circuit breaker to trip provided that a cause of the abnormal condition signaled is not one which prevents tripping of the circuit breaker.
Abstract:
A warning device for a circuit breaker includes a casing with a button and a warning light is received in the button. The button is movable relative to the casing and made of transparent or translucent material. When the main circuit is connected, the warning light is not activated. When overheat or overload, the main circuit is cut off and a weak current circuit is formed to light up the warning light.
Abstract:
A method and apparatus providing automatic circuit breaker identification to an electronic trip unit includes a processor and a configuration module comprising configuration data identifying the particulars of a circuit breaker and that is in operable communication with the processor.
Abstract:
A circuit breaker includes a housing having an opening, separable contacts within the housing, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a generally transparent operating handle having a portion protruding through the opening of the housing. An auxiliary switch associated with the operating mechanism provides a first normally closed output when the separable contacts are open and a second normally open output when the separable contacts are closed. A first LED indicator cooperates with the first output, is proximate the operating handle and is illuminated when the separable contacts are open. A second LED indicator cooperates with the second output, is proximate the operating handle and is illuminated when the separable contacts are closed. One of the first and second LED indicators illuminates the operating handle.
Abstract:
Resettable circuit interrupting devices using a center latch are provided. The circuit interrupting devices include those with a reset lockout, reverse wiring protection, and/or an independent trip portion.
Abstract:
A lighted escutcheon plate for power distribution equipment includes an escutcheon plate in electrical communication with a power distribution circuit; and a plurality of LED bulbs, generally green or alternatively red, mounted on the escutcheon plate, so as to provide a visual indication of an open circuit status by lighting when the power distribution circuit is opened. The plate also includes a plurality of LED bulbs, generally red or alternatively green, mounted on the escutcheon plate, so as to provide a visual indication of a close circuit status by lighting when the power distribution circuit is closed. For tripped circuit conditions the plate includes a plurality of LED bulbs, generally yellow or amber, mounted on the escutcheon plate, so as to provide a visual indication of a trip circuit status by lighting when the power distribution circuit is tripped. Each of the plurality of LED bulbs are electrically connected and mounted such that should any of the plurality of LED bulbs fail, the remaining LED bulbs are capable of lighting to provide the visual indication of corresponding open, close and trip circuit status and the failed LED bulbs are capable of being replaced without interrupting the control power circuit. The plurality of LED bulbs used to indicate trip circuit status are electrically connected to flash on and off repetitively when lighted due to the trip circuit status.
Abstract:
A monitoring apparatus includes sensors for interconnection with the load output terminal of a corresponding circuit breaker. The sensors sense the closed and open states of the corresponding circuit breakers and produce closure signals at outputs. The sensor outputs are interconnected in series to produce a combined closure signal for all of the circuit breakers. An indicating circuit interconnected with the combined closure signal outputs a signal, such as a relay contact or an audible, visual, or digital signal, to indicate the combined closure status of the circuit breakers.
Abstract:
A circuit breaker assembly incorporating a light emitting diode as an indicator when an overload condition is present and the circuit has been blown and further wherein the assembly includes an integral, internally placed load in the form of a capacitance sufficient to energize the light emitting diode when the load normally present in the circuit has been removed. The capacitance is connected in series with the light emitting diode as well as an external ground contact for providing the ground return for energizing the light emitting diode.
Abstract:
An improved device for protecting an electrical load from a current overload combines an electrical switch and a re-settable circuit breaker in a single housing. The device avoids the use of gate plates, visually alerts an operator to the existence of a tripped conditions, and provides automatically self-aligning, evenly-wearing contacts for the switch.