Switch disconnector for distribution — MasterPact MTZ2 20 HA10
The Schneider Electric LV847274 is a MasterPact MTZ2 20 HA10 switch disconnector rated at 2000 A operational current (AC-23A/AC-3) with a 1150 V AC operational voltage. It carries a 105 kA peak short-circuit making capacity at 1150 V AC, 50/60 Hz, and a rated short-time withstand of 50 kA for 1 s or 3 s. This 4-pole, fixed-mount unit is designed for distribution applications and provides visible isolation per EN/IEC 60947-3. The 2000 A rating in AC-23A (frequent switching of mixed resistive and inductive loads) and AC-3 (motor switching) means this disconnector handles heavy motor and distribution feeder duty where high inrush currents are routine. The 105 kA Icm peak making capacity ensures it can close onto a fault without welding contacts — critical for upstream main disconnectors in high-fault-current installations. Rated impulse withstand voltage of 12 kV and insulation voltage of 1250 V AC confirm the air gaps and creepage are sized for 690 V and 1000 V line-to-line systems with margin.
Fixed-mount chassis with 537 mm width, 352 mm height, and 300 mm depth. IP30 front protection is typical for enclosed switchboards — not for open panel mounting.