AEG 79301 KF-N Instructions De Montage Et Mode D'emploi page 59

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A device must be provided in the electrical installation which allows the
appliance to be disconnected from the mains at all poles with a contact
opening width of at least 3 mm.
Suitable isolation devices include line protecting cut-outs, fuses (screw
type fuses are to be removed from the holder), earth leakage trips and
contactors.
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