4000 A switch-disconnector for distribution
The LV847277 is a fixed-mount MasterPact MTZ2 40 HA10 switch-disconnector rated for 4000 A AC at 1150 VAC 50/60 Hz, with a peak making capacity of 105 kA (Icm) at 1150 VAC. It's a 4-pole unit built for distribution duty, carrying AC-23A and AC-3 utilisation categories — meaning it handles motor and mixed loads, not just resistive. Rated insulation voltage is 1250 VAC, impulse withstand is 12 kV, and short-time withstand holds 50 kA for 1 s or 3 s. That's a serious fault-handling envelope for main incoming or bus-tie positions in a low-voltage switchboard. The unit provides visible-break isolation (suitability for isolation per EN/IEC 60947-3) and includes a contact position indicator. Mechanical durability is 20,000 cycles with periodic preventive maintenance; electrical durability for AC-23A duty is 500 cycles at 1150 VAC.
Fixed-mount design with a 150 mm connection pitch. Dimensions: 537 mm wide, 352 mm high, 300 mm deep. IP30 protection — suitable for indoor switchboard installation where tools are required for access. Push-button control type, network frequency 50/60 Hz.