Re-closing locks prevent circuit breakers from being accidentally switched on. The lock is suitable as a lock for the Tytan fuse disconnectors. The associated storage box can be easily attached to a mounting rail. Properties: Cylinder lock design contains two keys, delivered in a practical storage box for mounting on a mounting rail, mounting type: quick attachment to a mounting rail, areas of application: use in power supplies for residential and commercial buildings as well as industrial plants in conjunction with Tytan D0 main fuse switch disconnectors.