Abstract: The invention relates to a safety device for a lift installation, having an intercepting mechanism, which, when actuated, is designed to brake a movement of a lift car of the lift installation, an actuating mechanism, which is configured to assume a first and a second position, the actuating mechanism leaving the intercepting mechanism non-actuated in the first position and actuating the intercepting mechanism in the second position, having a pressure accumulator, which forces the actuating mechanism into the second position, a holding device, which holds the actuating mechanism in the first position by using a permanent magnet, and an electromagnet, which is configured to release the holding device when energized, in order to cause the pressure accumulator to force the actuating mechanism into the second position.