In one example, a hybrid circuit interrupter may include a three-coil architecture, first coil circuitry, leakage detection circuitry, and a main processing circuit including a processor. The three-coil architecture may include a coil housing, three coils, and a plurality of coil assembly conductors. The coils may be disposed within the coil housing. The coil assembly conductors may be at least partially disposed within the coil housing. The first coil circuitry may be connected to the first coil and may generate first coil signals. The leakage detection circuitry may be connected to the other two coils and may generate a leakage signal. The processor may receive the first coil signals, receive the leakage signal, determine whether an arc fault exists based on the first coil signals, determine whether a ground fault exists based on the leakage signal, and generate a first trigger signal if a fault is determined to exist.

A miniature circuit breaker, which includes a button mechanism, a circuit breaker housing, and an anti-switching-on mechanism, wherein the button mechanism is arrange at one end of the circuit breaker housing and is in sliding fit with the circuit breaker housing, the anti-switching-on mechanism includes a first locking member, the first locking member is pivotally arranged on the circuit breaker housing, one end of the first locking member is in locking fit with the button mechanism to prevent the button mechanism from moving towards a switching-on direction.

A circuit breaker with improved trip unit fixation is disclosed. Another circuit breaker and a system also perform the functions of the circuit breaker. A circuit breaker includes a frame and a trip unit mounted in the frame. The trip unit includes a terminal for securing a wire to the trip unit. One of a wall of the frame and the trip unit include a protrusion and the wall of the frame or the trip unit without the protrusion includes an opening. The protrusion conforms to the opening and the protrusion and opening are positioned to oppose movement of the trip unit in a direction of a force resulting from securing the wire in the terminal.

A circuit breaker includes: a tripped indicator for indicating a tripping of the circuit breaker, the tripped indicator having a first pivot element mounted on a first pivot pin; and a switch lock with a pawl pivotally mounted on a pawl pin. The first pivot element is actuated by the pawl to indicate a tripped condition of the circuit breaker. The first pivot pin is arranged substantially normal to the pawl pin.

An improved multi-pole circuit interrupter includes an improved trip deck assembly adjacent one pole and further includes an accessory deck adjacent another pole. The accessory deck includes conventional accessory devices such as an auxiliary switch, etc., and the trip deck assembly includes switches and one or more other devices that can interact with a crossbar and a trip bar of the circuit interrupter. Such switches can be easily installed by a technician in the field after manufacture of the circuit interrupter. One switch is held in place by a support, and the other switch is held in place by a retainer, with the support and the retainer holding the switches in a fixed position on the trip deck assembly in order to interact with the crossbar and the trip bar.

A method, apparatus, and system for protection from hazards of conductivity is disclosed using non-electrical means to disrupt electrical current with a thermovolumetric substance. The purpose of this invention is to prevent hazardous conditions from occurring by disrupting the flow of electrical current prior to the development of arc fault conditions.

A method, apparatus, and system for protection from hazards of conductivity is disclosed using non-electrical means to disrupt electrical current with a thermovolumetric substance. The purpose of this invention is to prevent hazardous conditions from occurring by disrupting the flow of electrical current prior to the development of arc fault conditions.

The present disclosure relates to a semiconductor circuit breaker and, more specifically, to a semiconductor circuit breaker in which a protection circuit is modularized and thus maintenance and repair can be easily done. A semiconductor circuit breaker according to an embodiment of the present disclosure comprises: a main circuit unit connected between a power source and a load and having a semiconductor switch; an outer box equipped with the main circuit unit and having a module accommodation unit outside thereof; and a protection module detachably accommodated in the module accommodation unit.

A circuit interrupter includes a handle, an operating linkage, and a spring that are situated on a housing, with the spring extending between the handle and the operating linkage. The circuit interrupter is movable among an ON position, an OFF position, and a TRIP position, and the operating linkage includes a contact arm that is pivotable with respect to the housing to move a movable contact between an OPEN position and a CLOSED position with respect to a stationary contact. The handle has a toggle point, and when the spring is situated at a first side of the toggle point, the spring biases the contact arm to the ON position. When the spring is situated at a second side of the toggle point, the spring biases the contact arm to the OFF position or the TRIP position.

A circuit interrupter includes a handle, an operating linkage, and a spring that are situated on a housing, with the spring extending between the handle and the operating linkage. The circuit interrupter is movable among an ON position, an OFF position, and a TRIP position, and the operating linkage includes a contact arm that is pivotable with respect to the housing to move a movable contact between an OPEN position and a CLOSED position with respect to a stationary contact. The handle has a toggle point, and when the spring is situated at a first side of the toggle point, the spring biases the contact arm to the ON position. When the spring is situated at a second side of the toggle point, the spring biases the contact arm to the OFF position or the TRIP position.