An electrical breaking module includes a non-magnetic, electrically insulating casing housing, a fixed contact and a movable contact defining between them a breaking zone in which an electric arc extends at its origin when the electrical circuit is opened. A magnetic blow-out device is provided with at least one magnetic field source arranged in a breaking chamber, opposite the breaking zone to move and stretch the electric arc in a direction substantially perpendicular to the breaking plane towards the housing. The magnetic blow-out device also includes a non-magnetic, electrically insulating deflector, arranged in the breaking chamber to occupy most of the space between the breaking zone and the casing, so as to create at least one arc confinement zone, in which the electric arc when magnetically blown is deflected and constrained to promote its cooling and extinction.

An electrical breaking module includes a non-magnetic, electrically insulating casing housing, a fixed contact and a movable contact defining between them a breaking zone in which an electric arc extends at its origin when the electrical circuit is opened. A magnetic blow-out device is provided with at least one magnetic field source arranged in a breaking chamber, opposite the breaking zone to move and stretch the electric arc in a direction substantially perpendicular to the breaking plane towards the housing. The magnetic blow-out device also includes a non-magnetic, electrically insulating deflector, arranged in the breaking chamber to occupy most of the space between the breaking zone and the casing, so as to create at least one arc confinement zone, in which the electric arc when magnetically blown is deflected and constrained to promote its cooling and extinction.

An electrical breaking module includes a non-magnetic, electrically insulating casing housing, a fixed contact and a movable contact defining between them a breaking zone in which an electric arc extends at its origin when the electrical circuit is opened. A magnetic blow-out device is provided with at least one magnetic field source arranged in a breaking chamber, opposite the breaking zone to move and stretch the electric arc in a direction substantially perpendicular to the breaking plane towards the housing. The magnetic blow-out device also includes a non-magnetic, electrically insulating deflector, arranged in the breaking chamber to occupy most of the space between the breaking zone and the casing, so as to create at least one arc confinement zone, in which the electric arc when magnetically blown is deflected and constrained to promote its cooling and extinction.

A permanent magnet drive on-load tap-changing switch including a changing switch circuit that includes an odd- and an even-numbered tap-changing circuit that are structurally identical. The tap-changing circuits include working contactors and dual-contact synchronous transition contactors made of primary contactors and secondary contactors. The working contactors and the dual-contact synchronous transition contactors directly face moving contactors. The moving contactors are connected in parallel to each other. Moving contactor permanent magnets are bijectively connected onto the moving contactors. The moving contactor permanent magnets directly face on the other extremity thereof a moving contactor driving mechanism. The moving contactor driving mechanism moves the permanent magnets. The switch is structurally simple and convenient to use, obviates the need for a highspeed mechanism, implements changing by direct actions of the contactors, operates at high speed and reliably, has a low failure rate, an extended service life, and value for widespread use.

A permanent magnet drive on-load tap-changing switch including a changing switch circuit that includes an odd- and an even-numbered tap-changing circuit that are structurally identical. The tap-changing circuits include working contactors and dual-contact synchronous transition contactors made of primary contactors and secondary contactors. The working contactors and the dual-contact synchronous transition contactors directly face moving contactors. The moving contactors are connected in parallel to each other. Moving contactor permanent magnets are bijectively connected onto the moving contactors. The moving contactor permanent magnets directly face on the other extremity thereof a moving contactor driving mechanism. The moving contactor driving mechanism moves the permanent magnets. The switch is structurally simple and convenient to use, obviates the need for a highspeed mechanism, implements changing by direct actions of the contactors, operates at high speed and reliably, has a low failure rate, an extended service life, and value for widespread use.