Circuit Breaker Abstract A stored-energy mechanism for a high-voltage circuit-breaker pole filled with an insulating gas with a drive rod, which transmits the drive movement to an interrupter unit by thrust or traction and which can be driven through...
Arc faults are detected by bandpass filtering the current to generate a sensed current signal with a pulse each time an arc is struck. A resettable integrator integrates this sensed current repetitively over equal time intervals such as each cycle of...
Circuit Breaker Abstract A ground fault protection module is attached to a circuit breaker employing a thermal-magnetic trip unit to separate the circuit breaker contacts upon occurrence of a ground fault. The ground fault module contains a logic cir...
Circuit Breaker Abstract A breaker circuit for disconnecting a surge arrestor is operable over a wide range of current values. A spring-tensioned conductor connects a first potential to a first terminal of the arrestor while a second terminal of the...
Circuit Breaker Abstract A circuit breaker including a switch having an open and a closed position connected to a line of the circuit breaker. A first actuating device, actuated by a first activating signal, is connected to the switch to move the swi...
Circuit Breaker Abstract An enclosure for an external terminal of a circuit breaker on an electrical panelboard, which includes a body and a cover. The body defines an aperture for inserting an electrical load conductor and is securable adjacent a ci...
Circuit Breaker Abstract A lock assembly is formed from a two-piece plastic unit that is held together and to the compartment door by a planar lanced metal spring. The latch projection is ramped relative to the latch retainer slot within the compartm...
Circuit Breaker Abstract A circuit breaker has a body providing a lever pivotally mounted on the upper end thereof. Two terminals are disposed within the body, wherein the first terminal forms a bimetal thereon. The terminals are electrically connect...
Circuit Breaker Abstract An air circuit breaker bell alarm accessory interacts with the circuit breaker operating mechanism to provide local target indication as well as remote signal indication of the separation of the circuit breaker contacts. An i...
Circuit Breaker Abstract A circuit breaker has line and load terminals and a mechanism which indicates the magnitude of current flowing through the circuit breaker. The mechanism includes a current sensing resistor coupled between the supply and load...
Circuit Breaker Abstract A circuit breaker responds to sputtering arc faults by counting the times that a bandwidth limited di/dt signal exceeds a threshold magnitude within a selected time interval. In the exemplary circuit breaker, if the threshold...
Circuit Breaker Abstract A monolithic electronic circuit breaker having an input terminal, an output terminal, and a controllable impedance connected between the input and output terminals. A current sensor generates a current magnitude signal indica...
Circuit Breaker Abstract A mountable circuit breaker assembly and a method for mounting a circuit breaker on a base. A body portion of the circuit breaker is provided with rail insertion grooves on opposite sides thereof. The rail insertion grooves r...
Circuit Breaker Abstract An activation device with a start button and an emergency stop button for an electric appliance such as a circuit breaker equipped with a start control device and a stop control device with alternating movements. Also include...
Circuit Breaker Abstract A circuit breaker interlock mechanism interacts between the circuit breaker operating handle and circuit breaker closing button to prevent the closing button from operating to close the circuit breaker contacts when the circu...
Circuit Breaker Abstract A circuit breaker for interrupting electrical current flowing through a line conductor to a load terminal in response to the detection of a current overload, ground fault and/or arcing fault. The circuit breaker has a trip ci...
Circuit Breaker Abstract The generator circuit breaker includes synchronization means for separating its main contacts before its arcing contacts are separated. It has a lever which is hinged at one of its ends to a fixed contact piece and which is c...