A switch assembly for a reactive power compensation apparatus, the switch assembly comprising: a support module; a first switching module having a first stack structure perpendicular to the support module; and a second switching module having a second stack structure perpendicular to the support module, the second switching module being connected in parallel with the first switching module, wherein each of the first and second switching modules (100, 200) comprises: first through (n+1)th cooling plates (104, 204) stacked along a vertical direction with respect to the support module; first through nth switches (101, 201) respectively disposed between the first through (n+1)th cooling plates (104, 204); a first electrode plate (107, 207) disposed on the (n+1)th cooling plate (104, 204); a first supporting member (125, 225) disposed on the first electrode plate (107, 207); a first pressing member (131, 231) disposed between the first electrode plate (107, 207) and the first supporting member (125, 225); a second electrode plate (110, 210) disposed below the first cooling plate (104, 204); a second supporting member (128, 228) disposed below the second electrode plate (110, 210); and a second pressing member (134, 234) disposed between the second electrode plate (110, 210) and the second supporting member (128, 228), and the second pressing member (134, 234) comprises: a first pressing support portion disposed between the second electrode plate (110, 210) and the second supporting member (128, 228); and characterized in that, the second pressing member (134, 234) further comprises: an insertion guide portion configured to guide an insertion of a pressing device that is adapted to press the first pressing support portion. a support module; a first switching module having a first stack structure perpendicular to the support module; and a second switching module having a second stack structure perpendicular to the support module, the second switching module being connected in parallel with the first switching module, wherein each of the first and second switching modules (100, 200) comprises: first through (n+1)th cooling plates (104, 204) stacked along a vertical direction with respect to the support module; first through nth switches (101, 201) respectively disposed between the first through (n+1)th cooling plates (104, 204); a first electrode plate (107, 207) disposed on the (n+1)th cooling plate (104, 204); a first supporting member (125, 225) disposed on the first electrode plate (107, 207); a first pressing member (131, 231) disposed between the first electrode plate (107, 207) and the first supporting member (125, 225); a second electrode plate (110, 210) disposed below the first cooling plate (104, 204); a second supporting member (128, 228) disposed below the second electrode plate (110, 210); and a second pressing member (134, 234) disposed between the second electrode plate (110, 210) and the second supporting member (128, 228), and the second pressing member (134, 234) comprises: a first pressing support portion disposed between the second electrode plate (110, 210) and the second supporting member (128, 228); and characterized in that, the second pressing member (134, 234) further comprises: an insertion guide portion configured to guide an insertion of a pressing device that is adapted to press the first pressing support portion. first through (n+1)th cooling plates (104, 204) stacked along a vertical direction with respect to the support module; first through nth switches (101, 201) respectively disposed between the first through (n+1)th cooling plates (104, 204); a first electrode plate (107, 207) disposed on the (n+1)th cooling plate (104, 204); a first supporting member (125, 225) disposed on the first electrode plate (107, 207); a first pressing member (131, 231) disposed between the first electrode plate (107, 207) and the first supporting member (125, 225); a second electrode plate (110, 210) disposed below the first cooling plate (104, 204); a second supporting member (128, 228) disposed below the second electrode plate (110, 210); and a second pressing member (134, 234) disposed between the second electrode plate (110, 210) and the second supporting member (128, 228), and the second pressing member (134, 234) comprises: a first pressing support portion disposed between the second electrode plate (110, 210) and the second supporting member (128, 228); and characterized in that, the second pressing member (134, 234) further comprises: an insertion guide portion configured to guide an insertion of a pressing device that is adapted to press the first pressing support portion. a first pressing support portion disposed between the second electrode plate (110, 210) and the second supporting member (128, 228); and characterized in that, the second pressing member (134, 234) further comprises: an insertion guide portion configured to guide an insertion of a pressing device that is adapted to press the first pressing support portion.