For facilities that require reliable three‑phase voltage conversion, selecting the right step up transformer is critical. This guide highlights five Amazon options that support 208V to 480V configurations, focusing on three‑phase delta or isolation designs that are common in industrial and commercial environments. Each product includes key features to help compare efficiency, durability, and suitability for high-demand equipment.
| Product | Brand | Voltage Range | Type | Power |
|---|---|---|---|---|
| 3 Phase Delta Buck/Boost Step-Up Transformer – 208V Primary – 230V Secondary | Larson Electronics | 208V → 230V | Delta Buck/Boost | 31.25 – 83.33 A |
| GoHz 6 kVA 3 Phase Isolation Transformer, 208V to 480V | GoHz | 208V → 480V | Isolation, Dry Type | 6 kVA |
| 15kVA Isolation Transformer, 3 Phase 480V to 208V | GoHz | 480V → 208V | Isolation, Dry Type | 15 kVA |
| 3 Phase Delta Buck/Boost Step-Up Transformer – 208V Primary – 230V Secondary | Larson Electronics | 208V → 230V | Delta Buck/Boost | 20.83 – 83.33 A |
| GoHz 4 kVA 3 Phase Isolation Transformer, 480V to 208V | GoHz | 480V → 208V | Isolation, Dry Type | 4 kVA |
Note: All entries are listed with the assumption of typical industrial usage and include three‑phase configurations. Always verify exact input/output voltage ranges and insulation classes with the supplier before purchasing.
3 Phase Delta Buck/Boost Step-Up Transformer – 208V Primary
Brand: Larson Electronics
Key features include customizable options and safety notes on returns, highlighting that safety considerations and custom tailoring are available for specific needs. This delta buck/boost design supports stepping voltage up or down within a three‑phase system, with primary voltage at 208V and secondary near 230V, making it suitable for sensitive equipment that requires a stable, slightly elevated voltage. This unit emphasizes safety and reuse policies, which are important for installations requiring strict compliance and traceability.
GoHz 6 kVA 3 Phase Isolation Transformer
Brand: GoHz
This 6 kVA dry‑type isolation transformer supports step‑up or step‑down functions with a primary range that can include 208–480V configurations. Copper winding and a dry‑type cooling design contribute to efficiency and durability in industrial settings. Its isolation function helps reduce electrical noise and protect sensitive machinery, making it suitable for CNC equipment, HVAC controls, and automation lines that demand stable voltage delivery.
15kVA Isolation Transformer, 3 Phase 480V to 208V
Brand: GoHz
With a 15 kVA rating, this three‑phase isolation transformer converts 480V down to 208V, offering high isolation performance and reliability for industrial processes. The unit emphasizes copper windings for efficient energy transfer and reduced electrical noise, making it well suited for environments with demanding loads and precision equipment. It supports Dyn11 wiring and dry‑type cooling for robust operation in challenging settings.
3 Phase Delta Buck/Boost Step-Up Transformer – 208V to 230V
Brand: Larson Electronics
This variant of the delta buck/boost family offers similar capabilities to the 208V to 230V model, with emphasis on safety and compliance. The product page reiterates the availability of custom configurations and warns about returns for transformers and converters, reflecting industry safety practices. For facilities needing tight voltage adjustments within a three‑phase network, this unit can provide stable stepping options with controlled amperage ranges.
GoHz 4 kVA 3 Phase Isolation Transformer
Brand: GoHz
This 4 kVA three‑phase isolation transformer is designed for step up or step down between 480V and 208V ranges. It features copper windings and a dry‑type cooling system, with a focus on reliable operation in commercial settings. The unit is suitable for controlling voltage for industrial machinery, minimizing voltage fluctuations and noise that can affect sensitive equipment.
Buying Guide: Key Considerations for 3 Phase 208V to 480V Transformers
- Voltage range and configuration: Ensure the transformer supports three‑phase operation and the exact voltages you need (208V, 230V, 480V, etc.). Decide between buck/boost (phase‑angle adjustment) and isolation (galvanic separation) based on your load and sensitivity to electrical noise.
- Power rating and amperage: Match kVA/kW ratings with the total load of connected equipment. Oversizing can improve reliability, while undersizing risks overheating and voltage drop.
- Winding material and efficiency: Copper windings typically offer higher efficiency and lower losses than aluminum. Higher efficiency is important for continuous operation and energy cost considerations.
- Cooling method: Dry‑type air cooling is common in industrial transformers and reduces fire risk, but ambient conditions and enclosure design should be considered.
- Insulation class and environment: Look for H‑class insulation or equivalent for harsh environments. Consider enclosure IP ratings if the transformer will be exposed to dust, moisture, or chemicals.
- Protection features: Grounding provisions, overcurrent protection, and thermal monitoring help safeguard connected equipment and the transformer itself.
- Installation and safety: Verify weight, mounting options, footprint, and vibration characteristics. Ensure compliance with local electrical codes and standards for three‑phase installations.
- Service and support: Some listings emphasize custom options and safety policies. Confirm warranty terms, returns policies (where applicable), and availability of spare parts or service.
- Reliability and noise: For critical facilities or noise‑sensitive equipment, emphasize low‑noise designs, stable isolation, and robust construction to minimize electrical interference.
In selecting a 3 phase step up transformer from the above options, prioritize the exact voltage transformation needs, load requirements, and environmental conditions. The combinations shown cover typical industrial scenarios, offering delta buck/boost configurations for voltage adjustment and isolation models for clean, noise‑free power delivery. Always consult the supplier for precise electrical specifications, installation guidelines, and any customization capabilities to ensure safe and compliant operation in your facility.