A selector switch for an on-load tap changer, the selector switch comprising a stationary insulation tube enclosing an insulation compartment; a central insulation tube disposed inside the insulation compartment, the central insulation tube having, per each phase a main vacuum interrupter including one end having a movable contact and including a fixed end; a resistor vacuum interrupter including one end having a movable contact and including a fixed end; wherein the main vacuum interrupter and the resistor vacuum interrupter are mounted and arranged coaxially and opposed with respect to one another, such that their respective ends having the movable contacts face each other; and an actuation device is provided in between the ends having the movable contacts of the vacuum interrupters, configured to commonly actuate the movable contacts of the vacuum interrupters; a main sliding arm extending from the fixed end of the main vacuum interrupter; and a resistor sliding arm extending from the fixed end of the resistor vacuum interrupter; and a drive mechanism configured to rotationally drive the central insulation tube such that by the rotation a switching sequence is performed, the switching sequence including moving the main sliding arm from a current tap to a next tap and, after a time delay has passed, moving the resistor sliding arm from a current tap to a next tap. a stationary insulation tube enclosing an insulation compartment; a central insulation tube disposed inside the insulation compartment, the central insulation tube having, per each phase a main vacuum interrupter including one end having a movable contact and including a fixed end; a resistor vacuum interrupter including one end having a movable contact and including a fixed end; wherein the main vacuum interrupter and the resistor vacuum interrupter are mounted and arranged coaxially and opposed with respect to one another, such that their respective ends having the movable contacts face each other; and an actuation device is provided in between the ends having the movable contacts of the vacuum interrupters, configured to commonly actuate the movable contacts of the vacuum interrupters; a main sliding arm extending from the fixed end of the main vacuum interrupter; and a resistor sliding arm extending from the fixed end of the resistor vacuum interrupter; a main vacuum interrupter including one end having a movable contact and including a fixed end; a resistor vacuum interrupter including one end having a movable contact and including a fixed end; wherein the main vacuum interrupter and the resistor vacuum interrupter are mounted and arranged coaxially and opposed with respect to one another, such that their respective ends having the movable contacts face each other; and an actuation device is provided in between the ends having the movable contacts of the vacuum interrupters, configured to commonly actuate the movable contacts of the vacuum interrupters; a main sliding arm extending from the fixed end of the main vacuum interrupter; and a resistor sliding arm extending from the fixed end of the resistor vacuum interrupter; and a drive mechanism configured to rotationally drive the central insulation tube such that by the rotation a switching sequence is performed, the switching sequence including moving the main sliding arm from a current tap to a next tap and, after a time delay has passed, moving the resistor sliding arm from a current tap to a next tap. <EOS>