Abstract: In a system for holding support elements on a body, which elements can be lded or swung out from the held position, such as support elements used with solar generators on space vehicles, a pin is arranged to carry the support elements and a locking bolt retains the pin in the held position. The locking bolt is biased toward a position where it releases the pin. The pin is tensioned so that it contributes to the biasing action on the locking bolt. A blocking element holds the locking element in position for securing the pin in the held position. When the blocking element is displaced, the locking bolt is released and, due to the biasing action, moves out of the position where it secures the pin in the held position. A number of pin-locking bolt-blocking element combinations can be secured in the held position by a common cable acting on the blocking elements. When the cable is cut, each of the combinations is released at the same time.