Patent application number | Description | Published |
20090255786 | CIRCUIT BREAKER WITH LOCKING MECHANISM - Disclosed is a circuit breaker with a locking mechanism, which ensures that circuit breaker is switched OFF before applying any trip free locks. Exemplary embodiments include a circuit breaker apparatus, including a lay shaft coupled to circuit breaker contacts, a lay shaft cam coupled to the lay shaft, a lifting plate configured to interface the lay shaft cam and a padlock plate configured to engage the lifting plate. Further exemplary embodiments include a circuit breaker system, the system including a circuit breaker having circuit breaker contacts and configured in an OFF condition, a padlock plate disposed on the circuit breaker, wherein the engagement of the padlock locks the circuit breaker into a trip free condition and a locking mechanism configured to lock the circuit breaker in the OFF condition in response to the engagement of the padlock plate. | 10-15-2009 |
20090255788 | SPRING DISCHARGE MECHANISM FOR CIRCUIT BREAKER - A spring discharge mechanism for a circuit breaker is provided. The mechanism includes two linkages for crashing or discharging the circuit breaker compression springs to allow the circuit breaker to be used in either fixed breaker installation or in an installation having a drawout mechanism. The secondary mechanism includes a manual activation linkage that couples with an interface plate. The interface plate is coupled to an opening latch shaft and a closing latch shaft that cooperates to discharge the circuit breaker compression springs. An interface lever is also coupled to the interface plate. The interface lever includes a roller that interacts with a pivoting cam lever coupled to a drawout mechanism. The cam lever interacts with the roller causing the interface lever to rotate the interface plate, the opening latch shaft and the closing latch shaft. | 10-15-2009 |
20090255789 | DRAW OUT CIRCUIT BREAKER ASSEMBLY HAVING A TELESCOPIC RACKING HANDLE - A draw out circuit breaker assembly which includes a draw out circuit breaker having a plurality of contacts configured for connecting and disconnecting an electrical power source to an electrical load, a breaker cassette including a draw out support plate housing operational components of the draw out circuit breaker, and a port, and a collapsible telescopic racking handle stored collapsed in the port after the draw out circuit breaker is racked into the breaker cassette. | 10-15-2009 |
20090255790 | RACKING MECHANISM FOR A CIRCUIT BREAKER - Disclosed is a racking mechanism for a drawout circuit breaker including a cross shaft movably positioned in an enclosure and at least one input link in operable communication with the cross shaft via at least one connecting link. At least one racking cam is movably positioned in the enclosure and is in operable communication with the input link. Each racking cam has at least one cam slot receptive of a portion of the circuit breaker. Movement of the cross shaft about an axis of the cross shaft is capable of moving the at least one racking cam from an open position toward a closed position with the portion of the circuit breaker disposed in the at least one cam slot, thereby securing the circuit breaker in the enclosure and the at least one racking cam is in the closed position. A method for securing a circuit breaker in an enclosure and a circuit breaker assembly are also disclosed. | 10-15-2009 |
20090255791 | SYSTEM AND METHOD FOR INDICATING A POSITION OF AN ELECTRICAL DISTRIBUTION DEVICE - A system for indicating a position of an electrical distribution device configured to be racked into an electrically connected condition within an enclosure and racked out to an electrically disconnected condition via a racking mechanism is disclosed. The system includes a rotating indicator having at least a first position and a second position, the first position indicating the connected condition, and the second position indicating the disconnected condition, the indicator operably connected to the racking mechanism to rotate the indicator in response to movement of the racking mechanism between at least the connected condition and the disconnected condition. The system also includes a biasing device to bias rotation of the indicator toward the first position when the racking mechanism is in the connected condition and to bias rotation of the indicator toward the second position when the racking mechanism is in the disconnected condition. The system further includes a first mechanical stop to hold the indicator at the first position when the racking mechanism is in the connected condition, and a second mechanical stop to hold the indicator at the second position when the racking mechanism is in the disconnected condition. | 10-15-2009 |
20090255792 | CONTACT ASSEMBLY OF CIRCUIT BREAKER - A contact arm assembly including a plurality of substantially parallel plates having a space between each of the plurality of substantially parallel plates and a plurality of finger assemblies, at least one of the plurality of finger assemblies being pivotally attached to the plurality of substantially parallel plates and being located in the space between each of the plurality of substantially parallel plates, each of the plurality of finger assemblies having a body and an arc runner, the arc runner being locked against the body in at least two locations. | 10-15-2009 |
20090255906 | Arc chute assembly for a circuit breaker - An arc chute assembly includes a housing having a lateral axis and a quenching portion disposed within the housing. The quenching portion includes at least two deion plates being spaced along the lateral axis of the housing and each having a cut portion wherein the cut portions are staggered along the lateral axis with respect to one another and are configured to mitigate an arc. | 10-15-2009 |
20090256657 | BREAKER INTERLOCK SYSTEM AND METHOD - Disclosed herein is a breaker interlock system. The system includes, a trip unit for a breaker, and a breaker receptive of the trip unit. The breaker is closable when the trip unit is assembled thereto and the breaker is non-closable when the trip unit is not assembled to the breaker. The interlock system is further configured to prevent disassembly of the trip unit from the breaker when the breaker is in a closed configuration. The breaker having a plurality of solenoids and each of the plurality of solenoids is in operable communication with the breaker to trip the breaker on command. A first of the plurality of solenoids is responsive to a signal from the breaker via the trip unit, and a second of the plurality of solenoids is responsive to an externally supplied signal from a source other than the electronic trip unit. | 10-15-2009 |
20090256659 | CIRCUIT BREAKER WITH IMPROVED CLOSE AND LATCH PERFORMANCE - An apparatus includes a plurality of contacts for interrupting current flow when an overcurrent condition occurs, each contact including a mating face displaced at an angle with respect to a pivot point of at least one of the contacts, where the displacement of the mating faces is configured to minimize a repulsion force moment arm from the pivot point of at least one of the contacts. | 10-15-2009 |
20090256664 | Solenoid switch and cover - A solenoid includes a support and an electrical winding located at the support. A plunger may be provided that is movable in response to energization of the electrical winding and an actuator may also be provided that is adjustable relative to the plunger and interconnected therewith. The solenoid may further include at least one switch responsive to movement of the plunger. A solenoid cover is also presented. | 10-15-2009 |
20090257173 | SECONDARY CIRCUIT TERMINAL BLOCK DESIGN FOR FIXED TYPE CIRCUIT BREAKERS - A circuit breaker apparatus is provided and includes a circuit breaker, having a housing surface perpendicular to a plane of a front side of the circuit breaker and internal components, a terminal block structurally coupled to the housing surface, first terminal housings arrayed on the terminal block to each support first components and to be receptive of second terminal housings each of which supports second components, at least some of which are electrically coupled to the internal components, to be electrically coupled to at least some of the first components, and an access block. The access block is disposed on the terminal block and has apertures defined therein to provide for front-side access to the first terminal housings. | 10-15-2009 |
20090257174 | SELF-DISENGAGING CONTACTS FOR SECONDARY CIRCUITS OF DRAW-OUT TYPE CIRCUIT BREAKERS - A circuit breaker is provided and includes a cassette, including a housing surface, a cassette-side terminal block attached to the cassette, including terminal housings arrayed thereon, being rotatable about the housing surface, a circuit breaker configured to be removably inserted into the cassette during a rack-in operation, and a circuit breaker-side terminal block attached to the circuit breaker with terminal housings arrayed thereon. | 10-15-2009 |
20090257857 | ELECTRICAL DISTRIBUTION DEVICE ASSEMBLY - An electrical distribution device assembly includes a drawout substructure having at least first and second opposing side portions. The electrical distribution device assembly also includes a telescoping rail unit mounted to one of the first and second opposing side portions. The telescoping rail unit includes a carrier rail having a carrier rail support surface and a loading rail having a loading rail support surface. The loading rail is slidably supported by the carrier rail to define an extended deployed configuration and a retracted stowed configuration. The electrical distribution device assembly also includes an electrical device is supported upon at least one of the carrier rail and the loading rail and is selectively shiftable into and out from the drawout substructure. | 10-15-2009 |