The ZB4BG0 is the Harmony XB4 head for a key selector switch—metal, black, 22 mm diameter—designed to pair with a Harmony XB4 body to deliver a keyed, three-position selector. It accepts key number 455 and is part of Schneider Electric’s Harmony XB4 modular family, available as a maintained, non-illuminated operator. This head carries an IP65 rating for dust and water protection in rugged industrial panels and is intended for use with compatible contact blocks and mounting accessories for general-purpose or specialized control circuits.
