Combination of a vacuum interruption device and oil-filled transformer

The present invention describes a device (100) and method for interrupting electrical power to an electrical transformer winding (103-105) or to an electrical distribution system downstream from the device (100). The device (100) comprises at least one electrical transformer winding (103-105) and at least one interrupting device (106-108) coupled to the electrical transformer winding (103-105). The interrupting device (106) includes a vacuum enclosure (310). Contacts (401,402) located in the vacuum enclosure (310) are connected in series with the electrical transformer winding (103) and are movable between an open and a closed position. A linear shaft (311), coupled to one of the contacts (401,402) and movable by a magnetic actuator (306), cause the contacts (401) to move from the closed position to the open position. The magnetic actuator (306) is activated by an input signal, which may be an electrical current or an electrical voltage.