The EZB250MLUG is a mechanical cable lug from the Schneider Electric Easypact busbar range, rated 0...250 A and sized for bare incoming cables from 16 to 150 mm². It is a connection accessory — a lug, not a breaker or a terminal block — used to land power cables onto busbar systems in panel builds or switchgear assemblies.
The 0...250 A rating covers the full current range the lug is designed to carry continuously — it is not a setting, but a conductor-size-based capacity. The cable range of 16 to 150 mm² tells you the cross-section it accepts; if your incoming cable falls outside that span, this lug will not terminate properly. The mechanical lug type means it clamps the cable with a screw or bolt, not a crimp or solder joint, so it is field-serviceable and reusable if the connection is not torqued beyond spec.