If the tile above a voltage triggered switch is powered, an electric connection will be made between the tiles to its left and right. The voltage triggered switch does not connect the left and right tiles to the tile above.
The Voltage Triggered Inverted Switch behaves oppositely, conducting when unpowered and not conducting when powered.
The image to the right shows the default state. When powered the visible "connection" part will be moved down. This causes the connection to now join the two sides.