25 kva 480v to 120v transformer single phase
It’s the go-to size for small warehouses, machine shops, and retrofit jobs where a full three-phase system isn’t necessary. We’ve seen customers use it to power everything from facility lighting circuits to security systems—anywhere stable 120V is needed from a 480V feed.
What makes this unit work so well in the field? It’s compact, easy to install, and doesn’t require much maintenance. No oil, no noise—just clean, dry-type performance you can rely on. And because it’s made in-house at our ISO-certified factory, we can meet UL and CE requirements, and ship fast—even for custom specs.
If you’re building a low-voltage distribution panel, or replacing a legacy transformer in a tight utility room, this model delivers what you need—without overengineering the solution.
Solar Power Systems
In commercial PV plants, the 25 kVA 480V to 120V transformer is typically mounted inside the inverter station or combiner panel, where it steps down the AC output from 480V to 120V.
✅ This 120V feed powers auxiliary loads like string monitoring boxes, weather sensors, RTU control panels, and lighting within the inverter shelter.
📍 Installed in a 1.5MW rooftop PV project in Arizona, the transformer ensured stable low-voltage control supply without drawing from the main DC bus.
Energy Storage Systems
In containerized battery systems, this transformer is placed next to the HVAC or BMS control unit, providing clean 120V from a 480V inverter output.
✅ It ensures stable low-voltage AC supply for the container’s internal lighting, smoke detection, touchscreen HMI, and network devices.
📍 Used in an ESS project in South Korea for a 500 kWh lithium pack, ensuring autonomous control even under load imbalance.
Data Centers
Within edge or Tier-2 data centers, 480V is used for server loads, but many facility systems still require 120V. The 25 kVA transformer is installed in the MEP (mechanical-electrical-plumbing) corridor, supplying isolated 120V to environmental controls, access systems, and emergency lighting.
✅ Its quiet operation makes it ideal for proximity to critical IT areas.
📍 Integrated in a Jakarta-based colocation center with redundancy planning for 120V emergency strips.
Wind-Powered Hydrogen Electrolysis
At remote hydrogen test stations powered by micro wind turbines, this transformer is placed inside the skid-mounted electrolyzer unit, converting wind-inverter 480V to 120V.
✅ It powers PLC cabinets, small actuators, display modules, and backup relays essential for automated hydrogen
production.📍 Deployed in a Qinghai autonomous zone test project for green hydrogen generation under extreme conditions.
Medical Facilities
In small clinics, imaging labs, or mobile diagnostic vans, this transformer is installed inside the utility box or medical equipment bay, converting 480V facility power to 120V for devices like centrifuges, infusion warmers, data terminals, and sterilizers.
✅ It ensures clean, stable voltage for sensitive tools, especially in rural or temporary medical settings.
📍 Used by a healthcare NGO to retrofit rural health posts in Ecuador with solar + 480V generator backup systems.
- Data Sheet
- Three Phase Transformer Catalog
- Shinenergy Product Catalog
| Certification | UL |
| Phase | Three Phase |
| Rated capacity | UP TO 3000KVA Customized |
| Frequency | 50/60Hz |
| Work Efficiency | UP TO 99.05% |
| Protection Class | IP00/IP20/IP23/IP40/IP44/IP54 |
| Winding Material | Copper or Aluminum |
| Insulation level | Class F (155°C) Class H (180°C) Class N (200°C) Class R (220°C) |
| Designed lifetime | ≥30 years |
| Cooling Method | Air Cooling |
| Wiring Configuration | Δ-Y (Delta-Star)/Y-Y (Star-Star)/Δ-Δ (Delta-Delta)/Y-Δ (Star-Delta) /Δ-Z (Delta-Zigzag)/ Y-Z (Star-Zigzag) |
| Noise | ≤35 dB (1 meter) |
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Getting the Right 480V to 120V Transformer for Single Phase Power
If you’re working in a facility with a 480V supply but need to power 120V equipment, a 480V to 120V transformer single phase is often the most straightforward solution. It’s widely used for control panels, lighting, and small commercial loads that don’t require three-phase service.
We often get questions about using a 480V 3 phase to 120V single phase transformer. The answer is yes—but it depends on how the transformer is wired. With the right configuration, you can tap one leg of a three-phase supply to drive a single-phase load. Our engineering team often guides customers on how to do this safely.
Wiring matters too. If you’re looking for 480V single phase transformer to 120V wiring, make sure to confirm your voltage between hot legs and whether a grounded neutral is available. Many transformers offer clear terminal markings and center taps, but field conditions vary.
On the flip side, we also supply 120V to 480V single phase step up transformers—useful in cases where you only have 120V input, such as portable generator systems, but need to power 480V equipment.
Whether stepping down or stepping up, single-phase transformers are a practical, compact way to bridge voltage gaps in real-world electrical systems.
It converts high-voltage industrial or commercial power (typically 480V) into a safe, usable 120V output—ideal for lighting, control panels, or office equipment within facilities that don’t need three-phase power.
Yes, but it depends on your wiring setup. You can derive a 120V single phase line from a 480V three-phase source using a single-phase transformer connected between one hot leg and neutral. Always consult with an electrician to confirm grounding and balancing.
A typical setup involves connecting the primary side to L1 and L2 of the 480V input, and the secondary side provides 120V across the output terminals. Some transformers offer center taps to provide 60V-0-60V split-phase if needed.
📌 Always follow your local NEC code and transformer wiring diagram.
Yes, a 120V to 480V single phase step up transformer can boost voltage in low-power environments. It’s commonly used when devices need higher input voltage but only single-phase power is available—such as feeding 480V into a control cabinet from a 120V generator.