This three-phase autotransformer provides multi-tap voltage conversion between 600V, 480V, 400V, 240V, and 208V. One transformer, five voltage options — connect to any tap and get the output voltage you need. Available from 3 KVA to 150 KVA, select your size from the dropdown above.
| Tap 1 | 600V Three-Phase |
| Tap 2 | 480V Three-Phase |
| Tap 3 | 400V Three-Phase |
| Tap 4 | 240V Three-Phase |
| Tap 5 | 208V Three-Phase |
| Frequency | 60 Hz |
| Type | Dry-Type Autotransformer |
| Available Sizes | 3, 6, 9, 15, 30, 45, 75, 112.5, 150 KVA |
📦 What's Included
- ✅ Three-Phase Autotransformer (multi-tap)
- ✅ 5 Voltage Taps: 600V / 480V / 400V / 240V / 208V
- ✅ NEMA Enclosure (indoor/outdoor rated)
- ✅ Terminal Connections & Documentation
Why an Autotransformer
One transformer handles 600V, 480V, 400V, 240V, and 208V. Convert between any of these voltages by selecting the appropriate input and output taps.
Autotransformers use a single winding with taps — more efficient and less expensive than isolation transformers for voltage matching applications.
Built for industrial environments. Handles full load continuously without overheating or derating.
Autotransformers are physically smaller than equivalent isolation transformers — saves valuable floor or wall space in your electrical room.
🏗️ Common Applications
Need help selecting the right KVA and tap configuration? Our engineers are here to help.
This three-phase autotransformer provides multi-tap voltage conversion between 600V, 480V, 400V, 240V, and 208V three-phase power. Autotransformers use a single winding with multiple taps, making them more efficient and cost-effective than isolation transformers for voltage matching. Connect your input to one tap and your output to another — the transformer handles the conversion.
Available in 3 KVA through 150 KVA sizes to match your load requirements. Commonly used for powering imported 400V equipment from US 480V service, voltage matching between 208V and 240V systems, and stepping between 480V and 240V. Call (800) 417-6568 for sizing assistance.
