Operating errors, mounting and maintenance errors or aging effects can cause overcurrents in devices and machines. If these are not disconnected fast enough, they are on an irreversible road of destruction. Cables, wires and windings are heated up until they ﬁnally burn through. In a worst case scenario loads may even cause a thermal event. And that’s the end of it. Devices and machines are out of order and have to be repaired if this is at all possible. E-T-A circuit breakers help to prevent this from the start.
Like an airbag in a car they lead a hidden life most of the time. But if the situation gets dangerous, they have everything under control and disconnect hazardous overcurrents quickly and reliably.