Enclosed load switches/isolation switches in accordance with IEC 60947-3, also suitable for use as safety switches where such are required.
According to current regulations, a safety switch must be connected in the main circuit in order to isolate part of an installation during mechanical or electrical work, and to prevent accidental re-energisation while such work is being carried out.
Since a safety switch is intended solely for the isolation of an installation section, it is necessary to provide both a switching device for normal start/stop operation and a separate switching device serving as the safety switch.
Load switches/isolators in accordance with IEC 60947-3 may therefore be used either as safety switches or as independent switching devices.