Provided is a vacuum interrupter capable of improving an axial magnetic field intensity even at a contact portion other than a region of the contact portion corresponding to a region surrounded by an arm portion and a coil portion. In the vacuum interrupter according to the present disclosure, in each coil electrode, a bypass portion has: a second coil portion which extends so as to have an overlap with a corresponding first coil portion and a power feeding portion opposed to the first coil portion, in a circumferential direction; a first arm portion which connects the second coil portion and a ring portion; and a second arm portion which connects the second coil portion and the first coil portion.

A mechanical connector for high and low voltages has a first connector part with a first end having a cavity; a second connector part with a first end having a cross section adapted to the cavity of the first connector part, wherein the inner dimensions of the cavity correspond with the outer dimensions of the cross section to provide a slide fit and an electrical connection between the outer circumference of the cross section and the inner circumference of the cavity; and a thermal conductive, electrically insulating layer is arranged between and in contact with the end face of the second connector part and the bottom of the cavity of the first connector part. A circuit breaker may have such a mechanical connector incorporated in the fixed electrode rod.

An embedded pole is provided. The embedded pole includes an insulation shell, a conductive circuit, wherein at least a portion of the conductive circuit is housed within the insulation shell, and a ventilation system including an external heat sink coupled to the conductive circuit and external to the insulation shell, and an internal heat sink coupled to the conductive circuit and positioned within the insulation shell.

The present invention relates to a main circuit part of a vacuum circuit breaker, and more particularly, to a main circuit part of a vacuum circuit breaker with a temperature sensor. The main circuit part of a vacuum circuit breaker with a self-powered temperature sensor assembly includes: a self-powered temperature sensor module; and a support bracket enclosing and supporting the self-powered temperature sensor module.

The present disclosure provides a conductive member for a circuit breaker high voltage portion conductor assembly, the conductive member including a body with a transfer portion and a coupling portion. The body transfer portion has an electro-thermally efficient contour. That is, the body transfer portion has an electrically efficient contour and a thermally efficient contour. The body transfer portion includes a number of slots defining fins. In this configuration, the body transfer portion distributes current generally evenly across a cross-sectional area of the conductive member body. Further, the fins provide heat dissipation via convection.

A system and method for an electric pole part apparatus, includes an electric interruption unit; a heat sink; and a heat pipe arrangement; wherein the heat pipe arrangement comprises a plurality of heat pipes enclosed at least partially by an outer housing; wherein a first end of the heat pipe arrangement is connected to the heat sink; and wherein a second end of the heat pipe arrangement is connected to the electric interruption unit.

The present disclosure provides a pole component and a circuit breaker comprising the pole component. The pole component comprises: an upper terminal; a lower terminal disposed a predetermined distance away from the upper terminal; a breaker part assembly comprising a fixed electrode, which is electrically connected to the upper terminal, a movable electrode, which is selectively connected to the fixed electrode, and a current conducting portion which is fixed to the movable electrode and electrically connected to the lower terminal; an outer housing having an open lower surface and accommodating the upper terminal, lower terminal and breaker part assembly; and an inner housing which is detachably disposed between the outer housing and breaker part assembly.

A pole component (and circuit breakers including such a pole components) may be provided that include an upper terminal; a lower terminal disposed a predetermined distance away from the upper terminal; a breaker part assembly including a fixed electrode, which is electrically connected to the upper terminal, a movable electrode, which is selectively connected to the fixed electrode, and a current conducting portion which is fixed to the movable electrode and electrically connected to the lower terminal; an outer housing having an open lower surface and accommodating the upper terminal, lower terminal and breaker part assembly; and an inner housing which is detachably disposed between the outer housing and breaker part assembly.

The present disclosure provides a conductive member for a circuit breaker high voltage portion conductor assembly, the conductive member including a body with a transfer portion and a coupling portion. The body transfer portion has an electro-thermally efficient contour. That is, the body transfer portion has an electrically efficient contour and a thermally efficient contour. The body transfer portion includes a number of slots defining fins. In this configuration, the body transfer portion distributes current generally evenly across a cross-sectional area of the conductive member body. Further, the fins provide heat dissipation via convection.

A contactor post for an electrical contactor may comprise a body comprising an electrically and thermally conductive material, and a heat sink shunt extending from the body and comprising the electrically and thermally conductive material, wherein the body and the heat sink shunt are comprised of a single piece of the electrically and thermally conductive material.