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6.3.4 Closing operation
Make sure that the springs of the operating mechanism are
loaded,asindicatedbytheyellowsignalinthewindow(7).
Press the closing pushbutton (4). Closing is displayed by the
letter “I” in the red part of the window (6).
Ifthereisashuntclosingrelease,theclosingoperationcanbe
obtained by remote control.
NOTE. The closing pushbutton is not available for the re-
movable version of the circuit-breakers (HAD/UniAir) with-
out PR521 protection release.
6.3.5 Opening operation
Press the opening pushbutton (3).
Opening is displayed by the letter “O” in the green part of the
window (6).
Ifthereisashuntopeningrelease,theclosingoperationcanbe
obtained by remote control.