Eaton Corporation

Eaton Intelligent Power Limited

David Richard Olenak

Harry James Carlino

Theodore James Miller

Lloyd Allen Maloney

Brian Scott Caffro

James Leo Lagree

Richard Paul Malingowski

James Patrick Sisley

David Raymond Rohn

Todd Michael Shaak

Zachary Mueller

Lloyd A Malonez

In a circuit breaker arrangement, this disclosure describes a method and circuit design enables a current transformer to be used to detect ground faults in circuit breakers (such as a main-tie-main circuit breakers) that have been designed to receive signals from Rogowski coils.

Current sensor output converter for circuit breakers that are configured for Rogowski coils

A circuit interruption device (e.g., a molded case circuit breaker) includes at least one set of contacts, a contact actuator mechanism configured to open the at least one set of contacts and a trip control circuit configured to cause the contact actuator mechanism to open the at least one set of contacts responsive to a condition satisfying a first trip criterion and to apply a second trip criterion (e.g., a lower current level trip threshold) responsive to the opening of the at least one set of contacts. The trip control circuit may be configured to apply the second trip criterion after a succeeding closure of the at least one set of contacts. The trip control circuit may be further configured to return to application of the first trip criterion after lapse of a predetermined interval following the succeeding closure of the at least one set of contacts.

Circuit interruption apparatus providing automatic reduced arc mode and methods of operating the same

Molded case circuit breakers (MCCBs) have an MCCB body with at least one switch printed circuit board (PCB) holding between 1-4 recessed switches. The switch PCB has a bottom primary surface and an opposing top primary surface and a cover residing over the switch PCB and attached to the MCCB case body so that an outer end portion of the 1-4 switches held by the switch PCB extends through the cover.

Molded case circuit breakers with a switch PCB over an internal pocket and behind a front cover

A display unit is configured for use with a circuit interrupter which outputs a trip notification, trip information, and direct current power to the display unit The display unit comprises: a processor having a routine; a secondary power source configured to output secondary power; a memory display configured to receive the direct current power or the secondary power; and a power source selection circuit configured to switch the memory display from the direct current power to the secondary power in response to the display unit receiving the trip notification, wherein the routine of said processor is structured to control the memory display to display the trip information in response to the display unit receiving the trip notification.

Display unit configured to display trip information and circuit interrupter including the same

An electrical switching apparatus includes separable contacts; an operating mechanism structured to open and close the separable contacts; and a trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The trip mechanism includes an input structured to receive a remote signal to remotely enable an arc reduction maintenance mode, a first circuit structured to enable the arc reduction maintenance mode in response to the received remote signal, and a second circuit structured to provide an electrical signal remote from the trip mechanism in order to remotely indicate that the arc reduction maintenance mode is remotely enabled.

Trip unit providing remote electrical signal to remotely indicate that an arc reduction maintenance mode is remotely enabled, and electrical switching apparatus including the same

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Bridgeville, PA, United States of America

David Richard Olenak