Parameters: Parameter Value / Description Product Series Harmony WATSG (Watertight Switch, Heavy Duty) Rated Operational Current (Ie) 250 A Utilization Category AC-23A (For switching of squirrel-cage motors and other highly inductive loads). Capable of making and breaking its rated current under heavy load conditions, including motor starting. Number of Poles 4 (L1, L2, L3, N) Auxiliary Contacts Included (as per /4A). Typically a set of contacts (e.g., 2 NO + 2 NC) for remote signaling of the switch position. Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 690 V Protection Rating (IP) IP65 (Dust-tight and protected against water jets) when closed. IP66 is often standard or optional. Enclosure Material Polycarbonate (PC) or Stainless Steel (SS) – Exceptionally high impact, corrosion, and UV resistance. Mounting Surface mounting. Actuation Manual rotary handle operation. Handle is removable for locking in the OFF position (typically with multiple padlock capability). Position Indication Clear "O" (OFF) and "I" (ON) markings, plus a highly visible contact position indicator. Mechanical Life Very high (≥ 50,000 operations). Electrical Life Suitable for frequent operation under load (specific cycles depend on current). Standards IEC/EN 60947-1 and IEC/EN 60947-3 (for switch-disconnectors) Ambient Temperature Typically -25°C to +60°C