Eaton Corporation

Kevin D Gonyea

Patrick Wellington Mills

Richard George Benshoff

James Michael McCormick

Jeffrey C Lawton

Maurice R Ellsworth

James M Mccormick

A system is for an aircraft including a plurality of rows of seats. The system includes a plurality of monitors, a plurality of arc fault circuit interrupters each of which includes three poles having a line terminal and a load terminal. Each of a plurality of electronic enclosures is capable of being energized from a corresponding one of the load terminals of a corresponding one of the poles of a corresponding one of the AFCIs. A panel holds the AFCIs. A single-phase power source powers the line terminals of the poles of the AFCIs. Each of the poles corresponds to one row of the aircraft. Each of the electronic enclosures corresponds to one of a plurality of zones. Three of the rows are disposed in each of the zones. One of the AFCIs is associated with a corresponding one of the zones.

Aircraft system and method of arc fault protection for an aircraft system

An electrical switching apparatus, such as an aircraft circuit breaker or an aerospace circuit breaker, is for a corresponding aircraft or aerospace panel including a first aperture and a second aperture. The circuit breaker includes a status, such as a health status or trip status, a housing adapted to be coupled to the panel, separable contacts and an operating mechanism adapted to open and close the separable contacts. The operating mechanism includes an operating handle adapted to pass through the first panel aperture and a light indicator adapted to be disposed through the second panel aperture to indicate the status of the circuit breaker.

Electrical switching apparatus indicating status through panel aperture

An arc fault circuit breaker includes a housing, separable contacts, an operating mechanism adapted to open and close the separable contacts, and an arc fault trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The arc fault trip mechanism includes an arc fault test circuit adapted to simulate an arc fault trip condition to trip open the separable contacts. A proximity sensor, such as a Hall effect sensor, is adapted to sense a magnetic target to actuate the arc fault test circuit.

Method of actuating a test function of an electrical switching apparatus and electrical switching apparatus employing the same

A circuit interrupter includes a housing, separable contacts, and an operating mechanism including a latch. The operating mechanism opens the contacts responsive to actuation of the latch. A trip mechanism cooperates with the latch to trip open the contacts. The trip mechanism includes a thermal overload mechanism actuating the latch responsive to a thermal fault caused by current flowing through the contacts, a solenoid cooperating with the thermal overload mechanism to actuate the latch responsive to the electromagnetic device being energized, and a processor repetitively determining a value of the current flowing through the contacts, determining if the value exceeds a predetermined value for a number of occurrences, and responsively energizing the solenoid, in order to actuate the latch contemporaneous with actuation of the latch by the thermal overload mechanism, in order to decrease the time to trip open the contacts.

Electrical switching apparatus, circuit interrupter and method of interrupting overcurrents of a power circuit

A tester for testing a circuit breaker includes a plurality of load elements each having a nominal fixed impedance and an electronic switch associated with each load element. The electronic switch, when turned on, electrically connects a corresponding load element in series with a circuit breaker load terminal and in parallel with none or with a number of other load elements. A controller turns on a number of the electronic switches selected to draw through a corresponding number of the load elements a test current selected as a function of a designated rated current for the circuit breaker and sufficient to trip open the same. A pulse width modulation circuit cooperates with the controller and with the electronic switches. The pulse width modulation circuit provides a constant magnitude of the test current to accommodate variations of the nominal fixed impedance or variations of the voltage of the load terminal.

Circuit breaker tester including a pulse width modulation circuit

A circuit breaker includes a molded housing, separable contacts, an operating mechanism adapted to open and close the separable contacts, and a trip circuit cooperating with the operating mechanism to trip open the separable contacts. The molded housing includes two molded halves. The trip circuit includes a pair of arc fault printed circuit boards which cooperate with the corresponding molded halves to form an external composite structure. That external composite structure includes the printed circuit boards and an over-molding material, such as, for example, a thermally conductive epoxy coating disposed thereon.

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Bradenton, FL, United States of America

Kevin D Gonyea