An electrical switching apparatus includes a housing member, a printed circuit board assembly having a board including a first side and a second side facing away from the first side, and a barrier member coupled to each of the housing member and the first side of the board. The barrier member substantially encapsulates the first side of the board.

A circuit breaker device or circuit breaker system may include a series connection of a semiconductor switch and an isolating contact system, for a low voltage electrical circuit, in which the magnitude of the current is determined.

A circuit breaker device or circuit breaker system may include a series connection of a semiconductor switch and an isolating contact system, for a low voltage electrical circuit, in which the magnitude of the current is determined.

A bimetal thermal element adapted to assembling into a support. The bimetal thermal element includes: a bimetal strip having a first end and a second end opposite to the first end, and a notch formed at the first end; a heater made of a resistant strip including a linear portion and a wound portion, wherein the linear portion is straight and extending from a first position near the second end of the bimetal strip in a direction parallel to the bimetal strip and the wound portion is wound around the bimetal strip and the linear portion; and an insulating device to insulate the bimetal strip from the heater. With this design, there is also no current within the bimetal strip and its support, so the deflection of the bimetal strip is generated only by the temperature-rise coming from the resistant strip, therefore, it can realize a long tripping time.

A bimetal thermal element adapted to assembling into a support. The bimetal thermal element includes: a bimetal strip having a first end and a second end opposite to the first end, and a notch formed at the first end; a heater made of a resistant strip including a linear portion and a wound portion, wherein the linear portion is straight and extending from a first position near the second end of the bimetal strip in a direction parallel to the bimetal strip and the wound portion is wound around the bimetal strip and the linear portion; and an insulating device to insulate the bimetal strip from the heater. With this design, there is also no current within the bimetal strip and its support, so the deflection of the bimetal strip is generated only by the temperature-rise coming from the resistant strip, therefore, it can realize a long tripping time.

A circuit breaker includes an electrically insulative case and a handle rotatably coupled to the electrically insulative case. The circuit breaker also includes a gear train mechanism. The gear train mechanism includes a drive gear drivingly coupled to the handle and a plurality of pinions engaged with the drive gear. The drive gear is arranged to rotate the plurality of pinions in response to a rotation of the handle. The gear train mechanism also includes a rack engaged with the plurality of pinions. The rack is arranged to translate in response to a rotation of the plurality of pinions.

A circuit breaker includes an electrically insulative case and a handle rotatably coupled to the electrically insulative case. The circuit breaker also includes a gear train mechanism. The gear train mechanism includes a drive gear drivingly coupled to the handle and a plurality of pinions engaged with the drive gear. The drive gear is arranged to rotate the plurality of pinions in response to a rotation of the handle. The gear train mechanism also includes a rack engaged with the plurality of pinions. The rack is arranged to translate in response to a rotation of the plurality of pinions.

A circuit breaker comprises a contact and a line terminal configured that are bound in an assembly using a silver nanoparticles (NpAg) material that is synthesized by reducing a precursor salt in presence of a reducing agent. The contact comprises a silver alloy material having a first surface. The line terminal comprises a non-ferrous material having a second surface such that a plurality of drops of the silver nanoparticles (NpAg) material synthesized using a green chemistry process are applied in an interface between the first surface of the contact and the second surface of the line terminal by performing a resistance projection welding to bind the two components.

A circuit breaker comprises a contact and a line terminal configured that are bound in an assembly using a silver nanoparticles (NpAg) material that is synthesized by reducing a precursor salt in presence of a reducing agent. The contact comprises a silver alloy material having a first surface. The line terminal comprises a non-ferrous material having a second surface such that a plurality of drops of the silver nanoparticles (NpAg) material synthesized using a green chemistry process are applied in an interface between the first surface of the contact and the second surface of the line terminal by performing a resistance projection welding to bind the two components.

An engageable drive engageable operating mechanism for converting a movement of a linear translation operating handle to a rotating handle movement relative to the operative front face engageable with a molded-case circuit breaker. The mechanism includes an external rotating adapter external rotating operating member or alternatively an engageable drive engageable operating mechanism incorporating a handle assembly external rotating operating member, interchangeable with each other; and a gear, a support movable movement-converting support including a rack portion, and a structural support base, wherein the structural support base includes a built-in side opening chamber.