Industrial UPS | 40kVA / 32kW | 3 Phase | 480V Wye Systems | Support VRLA battery or LiFePO4 battery
In mission-critical environments, power instability is not merely an inconvenience—it is a direct operational risk. Prostar ET40K HV three phase 40kVA UPS system is engineered to provide uncompromising reliability. It ensures continuous and clean power for industrial and critical load applications.
As a high-efficiency 40kVA UPS system, the ET40K HV integrates advanced digital control. This high efficiency 480V UPS also includes robust power electronics and industrial-grade design. These features support demanding sectors such as manufacturing, healthcare infrastructure, and energy systems.

A 40kVA UPS system refers to a Uninterruptible Power Supply capable of handling 40 kilovolt-amperes of electrical load. The ET40K HV model operates at 480V three-phase input/output. It is the ideal choice for North American industrial environments.
This three phase UPS 40kVA is also suitable for commercial settings requiring high-density power distribution. Unlike single-phase units, this three-phase system provides balanced power delivery, ensuring optimal performance for sensitive equipment.
Designed for unstable grids, the uninterruptible power supply UPS accepts a broad input range, minimizing battery usage and extending battery life. This is especially valuable in industrial zones or regions with frequent voltage fluctuations.
This UPS operates with 3 phase 480V UPS system architecture, making it ideal for industrial loads:
The three phase 480v input output ups includes multi‑sensor thermal monitoring. It features automatic fan speed control and high‑efficiency heat dissipation. These features ensure stable operation even in high‑temperature environments.
The 40kVA UPS system features a reinforced chassis, an anti‑corrosion coating, and a vibration‑resistant design. These elements make it suitable for harsh industrial settings such as factories, mining sites, and heavy‑duty automation lines.
Choose between traditional VRLA batteries or high‑performance lithium‑ion packs for longer lifespan, faster charging, and reduced maintenance.
This industrial UPS system is built with a rugged chassis, isolation transformer and conformal-coated PCBs. It withstands dusty environments and temperature variations. The ups power supply also handles continuous high-load operations typical of factory floors and critical infrastructure sites.

| Feature | Specification |
| Power Capacity | 40kVA / 32kW |
| Phase | 3 Phase In / 3 Phase Out |
| Input/Output Voltage | 480VAC (High Voltage Range) |
| Topology | Online Double Conversion |
| Transformer | Built-in Isolation Transformer |
| Load Capability | 100% Unbalanced Load |
| Efficiency | Up to 96% in ECO Mode |
| Battery Type | External Battery Bank |
| Communication | RS232 / RS485 / USB / Dry Contacts / SNMP (Optional) |
| Application | Industrial, Medical, Server Rooms |



The ET40K HV three‑phase 40kVA UPS system is designed for demanding industrial environments. It provides continuous, high‑quality power essential for safety, productivity, and equipment protection. Its 480V architecture, rugged design, and advanced power conditioning make it suitable for a wide range of heavy‑duty applications.

The UPS ensures uninterrupted operation of PLCs, robotic arms, CNC machines, and automated production lines. Even brief power disturbances can halt manufacturing, so stable power is critical for uptime and precision.
Harsh environments require robust power protection. The 480V three phase UPS for critical load supports pumps, compressors, control systems, and safety instrumentation, preventing shutdowns that could lead to costly downtime.
Mining operations rely on stable power for ventilation systems, conveyor belts, monitoring equipment, and communication networks. The 40kVA UPS system withstands vibration, dust, and fluctuating loads.
Critical infrastructure such as pumps, SCADA systems, and monitoring equipment must remain operational 24/7. The high voltage industrial UPS 40kVA solution provides clean power to avoid service interruptions.
Precision environmental control, sterilization systems, and automated packaging lines require stable power to maintain compliance and product quality.
Choosing the right 40kVA UPS system means more than just capacity—it requires unmatched reliability, efficiency, and scalability. Prostar ET40K HV industrial ups offers:
If you’re comparing options for a reliable 40kVA UPS system for factory backup, consider Prostar ET40K HV model. It consistently outperforms competitors in real-world high-voltage deployments.
It’s a dedicated 480V 40kVA UPS system with DSP/IGBT technology. It offers zero transfer time. It provides full support for unbalanced loads. These features are optimized for North American 480V critical loads.
Yes—up to 8 units can operate in parallel for N+1 redundancy and expanded power needs.
By isolating loads from all power disturbances and providing instantaneous battery backup, it eliminates downtime risks.
The UPS supports VRLA and lithium‑ion battery options, giving users flexibility in runtime, lifespan, and maintenance requirements.
The UPS includes SNMP, RS232, RS485, USB, dry contacts, and WiFi kit, enabling real‑time monitoring, remote control, and predictive maintenance.
Looking for a reliable 40kVA UPS system tailored to your industrial application?
Contact us today to get technical specifications, pricing, and customized power solutions for your project.
| Model | ET40K HV |
| Capacity | 40KVA/32KW |
| Topology | Double conversion online |
| Noise | < 65dB from side 1M |
| Dimension(WxDxH mm) | 870x700x1300 |
| Weight(Kgs) | 605 |
| INPUT | |
| Nominal Voltage | 480Vac, 3P+N+PE |
| Voltage Range | 384 – 576Vac |
| Rated Frequency | 50Hz/60Hz (Automatically) |
| Frequency Range | 40Hz – 70Hz |
| Power Factor | ≥0.95 |
| Input Current Limit | 1.25 x rated input current (settable from 0.1 to 1.25) |
| THDi | < 3% at full load |
| OUTPUT | |
| Output Rated Voltage | 480Vac, 208Vac/220Vac |
| Voltage Regulation | ± 1% |
| Frequency | Mains mode: synchronized with bypass input |
| 50Hz/60Hz±0.01%(By Battery) | |
| THDu | <2% at 100% liner load, <5% at 100% non-liner load |
| Overload Capacity | 105-110%: 60 mins, 110-125%: 10 mins, 125-150%: 1 min, >150%: 200ms |
| Crest Factor | 3:1 |
| Wave Form | Pure sine wave |
| Transfer Time | 0ms |
| ECO MODE | |
| Bypass Output Voltage Range | Upper limit: default 5% (adjustable 5%/10%/15%) |
| Lower limit: default 5% (adjustable 5%/10%/15%) | |
| Bypass Output Frequency Range | Default +/-2Hz (adjustable +/-1Hz, +/-2Hz, +/-3Hz) |
| EFFICIENCY | |
| Efficiency at full load(AC-AC) | > 93% |
| Efficiency at ECO Mode | > 98% |
| BATTERY | |
| Battery Type | Support VRLA battery or LiFePO4 battery option |
| Battery Voltage | 360Vdc default, 336-384VDC |
| Battery Charging Currency | Default 0.2C, adjustable from 0C to 5C depending on battery specification and configuration |
| SYSTEM | |
| Protection | Input over-voltage, under-voltage; output overload, shortcircuit; Inverter over-temperature; Battery under-voltage,over-voltage, fan failure |
| IP Level | IP31 |
| Parallel Number | Up to 8 units |
| Cooling Method | Forced air cooling (fans) |
| Display | 7-inch color LCD touch screen |
| Audible Alarm | Audible and visual alarms prioritized by fault severity |
| ENVIRONMENT | |
| Operating Temperature | 0℃ to 40℃ |
| Storage Temperature | -20℃ to 55℃ |
| Humidity | 0~95% (non-condensing) |
| Altitude | <1000m (with increase of 100m,it will reduce output of 1%) |
| COMMUNICATION | |
| Communication Interface | RS232,RS485, USB, Dry contact, EPO (option: battery temperature compensation) |
| Intelligent Slot | Support SNMP card / web interface for advanced remote monitoring, management, and network integration |