Eaton Corporation

Square D Company

Kenneth L Uhlman

Kevin Anthony Simms

Wayne Gerald Adamson

David Lee Davidson

Terry A Cassity

Thomas C Leach

Larry D Polston

James P Mills, Jr

John P Taylor

An externally controllable circuit breaker includes a set of main contacts, an operating mechanism for opening and closing the main contacts; and a set of secondary contacts electrically connected in series with the main contacts. A control mechanism to open and close the secondary contacts includes an electromagnet with an armature having a first position, which opens the secondary contacts, and a second position, which closes the secondary contacts. The electromagnet also includes a coil electrically interconnected with the main contacts for energization therefrom and adapted for control by one or two external signals from one or two external contacts to operate the armature between the first and second positions.

Externally controllable circuit breaker

A circuit breaker has a set of remotely controllable secondary contacts connected in series with the main contacts which provide overcurrent protection. The secondary contacts are opened and closed by a latching solenoid having a close coil and an open coil which are separately connected to switched terminals of a first switch. A voltage source, which may be ac, dc or pulsed, is connected to the common terminal of the first switch through a rectifier. The first switch is coupled to the plunger of the latching solenoid which opens and closes the set of secondary contacts and enables the coil which operates the set of secondary contacts to the opposite state. Energization of the enabled coil is completed by additional, remotely located switches connected between each coil and ground. A status line connected to one of the switched terminals of the first switch is energized when the associated coil is enabled to indicate the open/close status of the set of secondary contacts.

Remotely controllable circuit breaker

A dual power source retrofit kit for a single power source service entrance panel. The retrofit kit is a field installable kit for retrofitting a single power source service entrance panel to a dual power source service entrance panel. The kit includes a power source selection assembly and a mounting bracket for attaching to the service entrance panel. A deadfront trim plate having a cut-out to accept the power source selection assembly is also supplied to replace the old trim plate of the service entrance panel. The power source selection assembly permits only the selected one of the primary or auxiliary power sources to provide power to the service entrance panel at any one time. The power source selection assembly is also designed such that overload protection devices/disconnect switches for both the primary power source and the auxiliary power source must be in the OFF position before switching from one power source to the other is permitted.

Dual power source retrofit kit with power source selection interlock

The present invention provides an overhead/underground combination service entrance device having a common enclosure that is divided by a center barrier into a first section for housing a watt-hour meter socket and a second section for housing a panel board containing a number of circuit breakers. The top panel of the common enclosure has a hole bringing electrical conductors into the first section from top of the common enclosure. A rain cap made from a suitable material is securely placed on the top panel. The rain cap has a hole therein that lies above the hole in the top panel so as to provide access to the first section from the outside. A hub closure plate is attached on the rain cap to cover sealingly cover the hole in the top panel. Means are provided for mounting the combination service entrance device on a flat surface and on vertical poles for temporary use. The combination device is preferably factory-assembled as a semi-flush-mounted unit and having the provisions for converting the device from a temporary service to permanent service. The combination service entrance device is installed for temporary use at the location where the unit eventually will be installed for permanent use. After sufficient construction has taken place, the rain cap is removed and the device is semi-flush-mounted in a wall for permanent use.

Growing community of inventors

Moon, PA, United States of America

Kenneth L Uhlman