The LV846346 is a MasterPact MTZ2 20 HH switch disconnector rated 2000 A at 440 V AC. It is a 4-pole drawout unit, meaning the switching element slides out of its chassis for inspection or replacement without disturbing the bus connections — common for switchgear where uptime matters and you want to rack out a section for maintenance while the rest of the board stays live. Rated for isolation per EN/IEC 60947-3 with a visible contact position indicator; the 12 kV impulse withstand voltage confirms it holds off surge events in a 1000 V insulation system.
Drawout mounting on a chassis means the switch is designed for a dedicated cubicle in low-voltage switchgear — not a standalone enclosure. The 403 mm depth and 556 mm width define the compartment size needed; the 115 mm connection pitch sets the bus-bar spacing for the rear terminals.