Abstract: A self-holding magnet has a spring (accumulator spring) and a first armature. The self-holding magnet is capable of holding the first magnet armature against the spring force in a lift position which is determined by a stop. The stop determines a remaining air gap of a working air gap. The magnetic circuit of the self-holding magnet has a magnetic shunt with particularly low reluctance of the same order of magnitude as a series reluctance of the remaining working air gap(s). The working air gap(s) and the shunt are magnetically connected in parallel with the flow generated by a permanent magnet but in series with the flow generated by the trigger coil. The self-holding magnet additionally has at least one positive feedback device such as a compressible resilient stop or a shunt.