The present invention discloses a fast-switching experimental simulation switch device with adjustable kick-down time. The switch device comprises a bottom board, a working switch closing button, a working switch closing time relay, a working switch trip button, a working switch trip time relay, a feeder terminal strip, a small disconnecting link, a working switch two-position relay, a backup switch two-position relay, a command terminal strip, a backup switch closing button, a backup switch closing time relay, a backup switch trip button and a backup switch trip time relay. With adoption of the switch device, continuous power supply of clients can be ensured, and the problem that electricity customers need to cut the power during maintenance of a fast switching device is solved.