Auslöser für eine Fehlerstrom-Schutzvorrichtung und Verfahren zum Betrieb eines Auslösers

摘要

The invention relates to a release (8) for a current fault protective device (2). The aim of the invention is to guarantee that the anchor (20) of the release (8) always returns to an identical position resting on pole shanks (12) of the release (8) each time after the protective device (2) has been released. To this end, an adjusting element (36) is provided which preferably acts upon the anchor (20) in a contactless manner and is especially configured as a permanent magnet. The spread of the release threshold is reduced by means of the adjustment element (36) and especially in an fault current switch because the release (8) always releases when defined field currents occur.