Eaton Intelligent Power Limited

Robert Patton Griffin

Xin Zhou

Brian E Carlson

Brooke E Lang

Steven Zhenghong Chen

Geraldo Nojima

Koustubh Dnyandeo Ashtekar

James Leo Lagree

Manuel J Fernandez

Andy Smith

Joseph Williams, Jr

Colby Myron Coates

A system including an arc flash sensor that detects an arc flash event and an arc flash mitigation device in communication with the sensor. The mitigation device includes a path of least resistance having a path input and a path output. The arc flash sensor is located downstream the output. The mitigation device includes an electro-mechanical switch between the input and the output and an actuator. The mitigation device also includes a bypass power switch device that includes a solid-state circuit interrupter and that conduct current between the input and the output in response to an open-circuit condition of the switch. A system controller is provided to generate a trigger to activate the actuator to generate the open-circuit condition of the switch, which causes the power switch device to interrupt a fault current associated with a fault event in response to detection of the arc flash event.

Hybrid arc flash mitigation system

A safety apparatus is a terminal shield having an indication circuit incorporated therein. The safety apparatus is usable with a circuit interrupter to overlie one or more terminals of the circuit interrupter that are connected with line and load conductors and to thereby form a circuit interrupter apparatus. The safety apparatus can be employed at the line side of a circuit interrupter, at the load side of a circuit interrupter, or at both sides of a circuit interrupter. The safety apparatus can be provided as part of a new circuit interrupter apparatus or can be provided to retrofit existing circuit interrupters. The indication circuit advantageously outputs from a top surface of the terminal shield one of a visual indication and an audible indication when one or more terminals of the circuit interrupter are electrified, thereby easily conveying to a technician the portions of the circuit interrupter that are electrified.

Safety apparatus having terminal shield with indication circuit, and circuit interruption apparatus

A device includes an electro-mechanical switching device having an open-circuit and closed-circuit conditions and a path of least resistance having a path input and a path output with the switching device between the input and the output. The device includes a bypass power switch device that comprises a solid-state circuit interrupter and that is configured to conduct current between the input and the output in response to an open-circuit condition of the switching device. The device includes a current sensor that is connected to the output and configured to detect a fault current event. The device includes an actuator that is coupled to the switching device and a controller that is configured to generate a trigger signal to activate the actuator to cause the open-circuit condition of the switching device and to interrupt the fault current event by the power switch device, based on the detected fault current event.

Arc flash mitigation device

A rotary switch includes a housing having an interior and an exterior, a plurality of moving contacts entirely disposed within the interior of the housing, a plurality of stationary contacts disposed partially within the interior of the housing and extending to an exterior of the housing, and a rotary element coupled to the plurality of moving contacts and being structured to rotate between a closed state where at least one of the plurality moving contacts contact a corresponding one of the plurality of stationary contacts and an open state where the plurality of moving contacts and the plurality of stationary contacts are separated.

Rotary switch and circuit interrupter including the same

An electrical contact is for a vacuum switching apparatus. The electrical contact includes a hub portion and a plurality of petal portions extending radially outwardly from the hub portion. The electrical contact is made from conductive materials and insulating materials.

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Bradfordwoods, PA, United States of America

Robert Patton Griffin