The device includes a magnetic system which releases the switch to the trip position at voltage failure of 70% of the nominal voltage.
The device is trip-free, in that the switch can be operated only when the primary voltage is available.
For switches in size S0 please choose a 'Power failure release'.
Available switch detents: 1x60°, 1x90° ('ON'-position 60° or 90° clockwise of the 'OFF'-position; Trip-position 120° clockwise of the 'OFF'-position)
If used with DC an economy resistor must be provided