4 Best 480 V → 240 V 3‑Phase Transformers (2025)

4 Best 480 V → 240 V 3‑Phase Transformers Table of Contents

• Introduction
• 1. Junengda Electrical Co. Ltd Transformer
• 2. North America Step‑Down 480→240 V 3‑Phase
• 3. Square D 480 → 240 V Dry‑Type Transformer
• 4. Phoenix Phase Converters 480–240/120 V 3‑Phase
• How to Choose the Right Transformer
• Summary Table

4 Best 480 V → 240 V 3‑Phase Transformers Introduction

Matching the right transformer is crucial for industrial systems relying on three-phase power. In 2025, the best 480 V → 240 V three-phase transformers offer reliable step-down performance, various form factors, and compliance with global standards. Below are the top four models trusted by electrical engineers.

1. Junengda Electrical Co. Ltd Transformer

Junengda Electrical Co. Ltd is a high-tech manufacturer from China, supplying custom-built distribution, pad-mounted, oil-immersed, and dry-type transformers from 6 kV up to 232 kV. Their 480 V → 240 V three-phase dry-type models excel in:

• Robust R&D and senior engineering support
• Fortune 500-level quality assurance and after-sales service
• Applications in industrial plants, mining, substations, and power distribution
• Custom options: dry-type, isolated, pad-mounted, oil and resin-filled variants

These transformers are ideal for high-demand environments needing reliability, customization, and global support.

2. North America 480 → 240 V 3‑Phase Step-Down Transformer

This widely used step-down transformer is available in 6, 9, 15, 30, 45, and 75 kVA ratings. It features:

• UL/CSA certified, ANSI/NEMA/IEEE-compliant
• Delta primary and secondary winding
• IP-rated rugged enclosure with conduit knockouts
• Vibration dampening for noisy environments
• Prices ranging from \$1,374 to \$3,924 depending on size :contentReference[oaicite:1]{index=1}

Makes an excellent choice for general-purpose industrial use requiring UL certification and durability.

3. Square D 480 → 240 V Dry‑Type Transformer

Square D from Schneider Electric offers a top-tier 480 V → 240 V three-phase dry-type transformer:

• Delta primary to Delta secondary configuration
• Suitable for wall or floor mounting (NEMA 3R rated)
• Up to 75 kVA capacity with 15 kVA units commonly used :contentReference[oaicite:2]{index=2}
• Ideal for motor control, CNCs, HVAC, and light industrial

Known for rugged reliability in commercial and industrial environments.

4. Phoenix Phase Converters 480–240/120 V 3‑Phase Transformer

Phoenix offers a dual secondary voltage transformer compatible with both 240 V and 120 V step-down.

• Capable of powering both three-phase loads and single-phase lighting or controls
• Multiple frame sizes for applications from shops to medium-sized industries :contentReference[oaicite:3]{index=3}
• Compact design and availability in copper and aluminum winding options

Ideal for workshops needing mixed voltage outputs with a single unit.

How to Choose the Right Transformer

• Power rating: Align kVA rating with total load plus safety margin.
• Mounting: Opt for pad-mounted, wall-mount, or compact enclosure based on location.
• Voltage configuration: Delta vs Wye must match incoming and outgoing systems.
• Certifications: UL, CSA, IEC certifications as required by local code.
• Environmental specs: Insulation class, IP rating, temperature rating.
• Winding material: Copper for long-term reliability, aluminum for cost-effective solutions.
• Customization: Choose specialized taps, core design, or transformer type if needed.

Summary Table

Conclusion: Whether you’re industrializing a factory, upgrading power supplies, or managing mixed-voltage systems, these top 4 480 → 240 V three-phase transformers offer reliable options for 2025. Junengda’s custom engineering leads for industrial tailored solutions, while UL-rated standard units from North America, Square D, or Phoenix provide robust off-the-shelf reliability.