The LV846315 is a MasterPact MTZ2 32 HH switch-disconnector rated for 3200 A continuous current at 440 V AC — that's the main feeder disconnect for a large distribution board or a high-current industrial load center. Isolation capability is confirmed per EN/IEC 60947-3, with a visible contact position indicator (though no physical visible break — the indicator is the tell).
Fixed-mount, 4-pole, 537 mm wide by 352 mm tall by 300 mm deep — it's a substantial footprint that needs a dedicated compartment in the switchboard.
Duty cycles and durability
Rated for 5000 electrical cycles in AC-23A duty (switching motor loads and mixed inductive/resistive loads) at 440 V, and 15000 mechanical cycles with periodic preventive maintenance. The AC-3 utilisation category also applies, so it handles the inrush of squirrel-cage motors during starting. Short-time withstand is 75 kA for 3 seconds or 100 kA for 1 second — enough to ride through a delayed trip coordination window.