This three-phase step-down transformer converts 480V Delta to 208Y/120V — providing both three-phase 208V power and single-phase 120V branch circuits from your 480V service. Available from 15 KVA to 150 KVA — select your size from the dropdown above. Dry-type, UL-listed, and built for continuous industrial duty.
| Primary Voltage | 480V 3-Phase Delta |
| Secondary Voltage | 208Y/120V 3-Phase Wye |
| Available KVA | 15, 30, 45, 75, 112.5, 150 KVA |
| Frequency | 60 Hz |
| Type | Dry-Type, Indoor/Outdoor |
| Temperature Rise | 150°C |
| Insulation Class | Class H (180°C) |
📦 What's Included
- ✅ Three-Phase Dry-Type Transformer (480V Δ to 208Y/120V)
- ✅ NEMA 3R Enclosure (indoor/outdoor rated)
- ✅ Primary & Secondary Terminal Connections
- ✅ Neutral Bar for 120V Branch Circuits
- ✅ Documentation & Wiring Instructions
Why This Transformer
The most common commercial voltage conversion. Get both 208V three-phase for equipment and 120V single-phase for outlets and lighting — from one transformer.
15, 30, 45, 75, 112.5, and 150 KVA — pick the right size for your load. Not sure? Call us and we'll calculate it.
Meets all applicable UL, CSA, and NEC standards. Your inspector won't have questions.
No oil, no PCBs, no scheduled maintenance. NEMA 3R enclosure handles indoor and outdoor environments.
🏗️ Common Applications
Need help calculating KVA? Our engineers will size it based on your panel schedule.
This three-phase step-down transformer converts 480V Delta to 208Y/120V — the most common voltage conversion for commercial and industrial buildings. The Wye secondary provides a neutral connection, giving you both three-phase 208V for equipment and single-phase 120V for receptacles, lighting, and controls from a single transformer.
Available in 15, 30, 45, 75, 112.5, and 150 KVA ratings. Select your required KVA from the dropdown — or call (800) 417-6568 for free sizing assistance based on your connected load calculations.
