AuCom soft starters: choosing between CSX, CSXi, EMX4e and EMX4i
AuCom is a New Zealand manufacturer that builds soft starters only. No drives, no contactors, no motion products at all. One specialisation across the whole range. We hold 66 positions in four series: CSX and CSXi cover 18-200 A, the EMX4e reaches 24-580 A, and the EMX4i works up to 1000 A. In kilowatts that is 7.5 to 630 kW at 400 V.
The selection logic is simple. The CSX is the basic unit: three switches. Set ramp time, then start voltage, done. The CSXi is the same CSX plus built-in electronic motor protection and a bypass. The EMX4e adds a full display and faster commissioning. The EMX4i sits at the top: adaptive start control plus extended diagnostics. Communication too, and current up to 1000 A. The price gap between CSX and CSXi at the same 110 A is UAH 47,900 against UAH 65,780. So the question is only whether you need motor protection inside the unit.
What we ask before quoting
Rated current from the motor nameplate, not from the machine documentation. We see a 5-15% discrepancy regularly. Then the load type: a centrifugal pump and a crusher need different units even at identical kilowatts. Then starts per hour and cabinet temperature, because above 40 °C derating applies. Supply for CSX and CSXi is 200-440 V, the EMX4e runs at 200-525 V, and the EMX4i handles up to 1200 V in the high-voltage version.
Prices and availability
The CSX opens at UAH 14,180 for the CSX-007-V4-C1(C2) at 18 A and reaches UAH 47,900 for the CSX-110 at 200 A. The CSXi runs from UAH 19,450 to UAH 65,780 across the same current band. The EMX4e covers UAH 27,525-205,070, while the EMX4i starts at UAH 33,550 and reaches UAH 529,300 in its top version. We hold a manual for each of the four series in English, sent with the invoice. If AuCom lead times do not suit, look at Danfoss MCD, Schneider Altistart, or the full soft starter section.