3 Phase Static Transfer Switch
Two independent AC inlets. The load rides on Source A. When A fails, the secondary inlet takes the load without an interruption the connected IT equipment can see. When A returns, the switch can hand the load back.
The problem it is built for
A mechanical ATS is fine for lighting and HVAC. It is not fine for a server PSU that browns out in a cycle or two. The HPS range is an SCR static transfer switch: first disconnect, then connect, typical transfer ≤6 ms, efficiency ≥98%.
Published current steps are 63, 100, 160, 250, 300 and 400 A per phase. Input and output are listed as 3-phase AC 380 V ±15%, 50/60 Hz; other voltages can be customized.
Published ratings
| Models | HPS-3363, HPS-33100, HPS-33160, HPS-33250, HPS-33300, HPS-33400 |
|---|---|
| Phases | 3 phase in / 3 phase out. Transfer number 3P, optional 3P+N |
| Voltage | AC 380 V ±15% (other voltages can be customized) |
| Frequency | 50/60 Hz |
| Max current / phase | 63 / 100 / 160 / 250 / 300 / 400 A |
| Transfer time | ≤6 ms typical |
| Priority | Input Source-A is priority |
| Transfer type | SCR / first disconnect then connect |
| Efficiency | ≥98% |
| Connectors / breaker | Terminal block. MCB on smaller frames, MCCB on larger frames |
| Display | LED working status; LCD voltage, current, power |
| Cooling | Air cooling; AC fan starts on over-temperature |
| Insulation | DC 500 V ≥20 MΩ; withstand AC 1800 V 10 mA / 1 minute |
| Environment | 0–45 °C; 0–99% RH non-condensing; altitude ≤1500 m |
| Cabinets | 600×600×1000 mm or 600×800×1760 mm (W×D×H) |
| Net weight | 65 / 70 / 80 / 105 / 155 / 215 kg across the six models |
Figures transcribed from the live product page. Spelling errors on that page are corrected in spelling only.
What we will not invent
The source page does not publish a short-circuit rating, a UL file or a seismic certificate. Those stay TBC until engineering sends the drawing pack.
Questions buyers actually ask
Will this ride through a 10 ms dip?
The published typical transfer is ≤6 ms. Whether a specific PSU rides through that interval is a PSU question. Send the load list with the enquiry.
Can it be 3P+N?
Yes. Transfer number is listed as 3P with 3P+N optional.
Is Source A always preferred?
Yes. The published priority is Input Source-A.