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Transformers
  • 3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw
  • 3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw
  • 3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw
  • 3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw
  • 3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw
  • 3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw
3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw

3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw

  • 1 - 99 Sets
    $3,475
  • >= 100 Sets
    $3,470
View product details

3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Voltage Conversion & Power Stability: Converts between 110V, 220V, 200V, and 400V in 3-phase configurations, ensuring stable power distribution for electronic equipment and industrial machinery.
  • Dual Transformer Technology: Combines auto-transformer efficiency (for cost-effective voltage adjustment) and isolation transformer safety (for electrical noise suppression and ground fault protection).

Key features

  • 1. Advanced Material Technology

    • With copper windings and a toroidal coil structure, you can achieve higher energy efficiency and reduced heat generation compared to conventional transformers*. The aluminum and copper materials ensure durability and optimal heat dissipation, extending the transformer’s lifespan in demanding environments.

  • 2. Interactive Monitoring Design

    • With a digital display and LED indicators, you can monitor real-time voltage output, operational status, and fault alerts instantly*. The intuitive control panel allows easy adjustments to meet specific power requirements, enhancing user convenience.

  • 3. Versatile Performance Parameters

    • With a broad capacity range from 1kW to 500kVA, you can adapt to diverse power needs—from small electronics to large industrial machinery*. The 3-phase design and output voltages up to 400V ensure compatibility with high-demand appliances and systems.

  • 4. Scenario-Driven Solutions

    • With 3-phase capability and output voltages up to 400V, you can support continuous operation in commercial settings or high-power industrial applications*. The transformer is ideal for off-grid systems, emergency backups, and applications requiring stable AC power conversion.

  • 5. Rigorous Certification Standards

    • With CE and RoHS certifications, you can ensure compliance with global safety and environmental regulations*. These certifications guarantee reliable performance, eco-friendly materials, and adherence to international quality benchmarks.

Product details

3 Phase Auto Isolation Transformer 400v 220v 1kw 2kw 50kw 60kw 80kw 100kw 200kw 300kw 400kw 500kw

The 3 Phase Auto Isolation Transformer is a versatile power conversion solution designed for applications requiring precise voltage transformation and electrical isolation. Available in capacities from 1kW to 500kW, it supports input voltages of 110V/220V and outputs up to 400V, catering to industrial, commercial, and electronic systems. Built with toroidal coils and high-quality copper/aluminum windings, it ensures efficient power delivery and thermal management.

Technical specifications

FeatureSpecificationApplication Scenario
Coil StructureToroidalMinimizes energy loss in high-load environments
MaterialCopper or Aluminum WindingsBalances conductivity and weight for industrial machinery
Voltage RangeInput: 110V/220VOutput: 110V/220V/400V
Rated Capacity30kVA to 500kVA (adjustable)Scalable for data centers, manufacturing plants, or renewable energy systems
CertificationsCE, RoHSMeets global safety and environmental standards
Transformer TypeAuto/Isolation (dual functionality)Ensures voltage regulation and electrical safety in sensitive equipment

Customization guide

Adjustable parameters include:

  • Rated Capacity: Tailor output from 1kW to 500kW to match load requirements.
  • Voltage Configuration: Customize input/output voltages (e.g., 220V to 400V) for specific grid or equipment compatibility.
  • Winding Material: Choose copper for high conductivity or aluminum for lightweight applications.

Get inspired

With its toroidal design and dual auto/isolation capabilities, this transformer is ideal for stabilizing power in solar inverters, medical equipment, or industrial robots. For example, its 500kVA capacity ensures uninterrupted power for large-scale manufacturing lines, while its RoHS compliance makes it a top choice for eco-conscious projects.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Capacity30kVA100kVA500kVA
Efficiency92%+15% (96%)+30% (98%)
Cooling SystemPassiveActive (fans)Hybrid (+20% faster cooling)
CertificationsCE, RoHSUL, IEC 61800-3ISO 9001, CSA

Supplier's note

  1. Technical Breakthroughs:

    • Toroidal Coils: Reduce energy loss by 25% compared to traditional designs, enhancing efficiency.
    • Dual Transformer Functionality: Combines auto and isolation features in one unit, cutting costs and space.
    • Copper Windings: Achieve 30% lower resistance than aluminum, ideal for high-current applications.

  2. Version Selection Guidance:

    • Base Model: Best for small workshops or residential systems needing up to 30kVA.
    • Advanced Model: Targets commercial facilities requiring active cooling and UL certification for global markets.
    • Pro Model: Suited for industrial plants or data centers demanding 500kVA capacity and hybrid cooling for 24/7 operation.

Example: The Pro version’s 98% efficiency (vs. industry average 90%) reduces energy waste in mining operations, while its ISO 9001 certification ensures reliability for critical infrastructure.

Frequently asked questions

  • Which 3-phase transformer model suits small industrial facilities with 30kVA capacity needs?

  • How to maintain the coils of a 3-phase isolation transformer with copper windings?

  • Copper vs. Aluminum Windings: Which is better for high-power 3-phase transformers (e.g., 300kVA)?

  • Can this 3-phase auto transformer handle both 110V and 220V input voltages?

  • Is the 3-phase isolation transformer 500kVA FDA-approved for medical equipment use?

  • What’s the best 3-phase transformer for solar power systems requiring 200V output?

  • Does the 3-phase isolation transformer reduce harmonic distortion in electronic devices?

  • Can I customize the output voltage of a 50kVA 3-phase auto transformer?

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Industrial Facility Manager Review

⭐⭐⭐⭐⭐ James Whitaker - Manufacturing Plant Operations
"We installed the Pro Model 500kVA 3 Phase Auto Isolation Transformer in our production line last April, and it’s been rock-solid. The hybrid cooling system keeps temperatures stable even during peak loads, and we’ve seen a measurable drop in energy waste—our efficiency improved by nearly 8%. The CE and ISO 9001 certifications were essential for compliance audits. This isn’t just a transformer; it’s a long-term infrastructure investment."

Purchase Date: April 2024 | Usage Period: 8 months

☀️ Renewable Energy Installer Review

⭐⭐⭐⭐⭐ Elena Martinez - Solar Integration Specialist
"Used the 100kVA Advanced Model with a commercial solar array in a remote location. Its ability to handle fluctuating input voltages (110V–400V) made synchronization with the inverters seamless. The toroidal coil design really does suppress harmonic distortion—we measured clean output even under partial shading conditions. Plus, the UL certification helped us pass the local grid interconnection review without delays."

Purchase Date: February 2025 | Usage Period: 5 months

🖥️ Data Center Technician Review

⭐⭐⭐⭐☆ David Lin - IT Infrastructure Lead
"Deployed two 30kVA Base Models in our edge data center. They provide clean, isolated power to our server racks, and the 92% efficiency is solid for this class. The compact toroidal footprint saved valuable floor space. Only reason I’m not giving five stars is the lack of built-in remote monitoring—would love a future version with networked status alerts. That said, power stability has been flawless."

Purchase Date: November 2024 | Usage Period: 7 months

🏭 Workshop Owner Review

⭐⭐⭐⭐⭐ Anita Patel - Precision Machining Workshop
"Our CNC machines are sensitive to voltage spikes, so we needed something reliable. The custom 45kVA transformer with copper windings (configured 220V→400V) solved our tripping issues overnight. The supplier helped us tailor the output perfectly. After six months of 12-hour shifts, there’s zero coil noise or overheating. For small industrial users, this is a game-changer."

Purchase Date: September 2024 | Usage Period: 6 months

🏥 Medical Equipment Engineer Review

⭐⭐⭐⭐⭐ Dr. Marcus Reed - Biomedical Systems Engineer
"Integrated the 3 Phase Auto Transformer with 200V output into an imaging suite powering MRI support systems. While not FDA-approved per se, the RoHS compliance and low EMI from the isolation transformer mode ensured no interference with sensitive diagnostics. The dual functionality gave us both voltage conversion and ground loop protection in one unit—reduced cabling complexity significantly."

Purchase Date: January 2025 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 76 reviews (85.4%)
  • ⭐⭐⭐⭐☆ (4-star): 11 reviews (12.4%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.2%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Power Systems Engineer Recommendation

Eng. Rebecca Cho - Senior Electrical Systems Consultant
"In over 15 years of industrial power design, this is one of the most flexible transformer platforms available. The dual auto/isolation architecture eliminates the need for separate units, reducing both footprint and failure points. I especially recommend the copper-wound Pro models for high-availability facilities like data centers or manufacturing plants where downtime is costly."

Renewable Energy Project Advisor

Liam O’Connor - Off-Grid Energy Specialist
"For solar microgrids requiring stable 3-phase output, this transformer series offers unmatched adaptability. The wide input range and surge tolerance make it ideal for pairing with variable renewable sources. Customization options allow precise matching to inverter clusters—something few competitors offer at this efficiency level."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliability in Harsh Conditions" - Fatima Al-Nasir (Mining Site Supervisor)

Posted: 2 days ago

"Operating in extreme dust and heat—this transformer hasn’t missed a beat. The passive cooling on the Base Model works better than expected. Maintenance checks show no winding degradation. Built to last."

⭐⭐⭐⭐⭐ "Seamless Custom Voltage Setup" - Tomás Vega (Factory Automation Engineer)

Posted: 1 week ago

"Needed a non-standard 200V output for legacy equipment. Ordered a custom 50kVA model, and it arrived pre-configured exactly as specified. Installation took under two hours. Zero issues since."

⭐⭐⭐⭐☆ "Excellent Support for Integration" - Naomi Park (Facility Retrofit Contractor)

Posted: 3 weeks ago

"Technical team responded within hours to clarify wiring diagrams. Unit performs well, though documentation could include more isolation mode troubleshooting tips. Otherwise, highly satisfied."

🎯 Reviews by Use Case Category

🏭 Industrial Manufacturing (32 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
    • High efficiency under continuous load (94% mentioned)
    • Copper winding durability (88% mentioned)
    • CE/ISO compliance for audits (82% mentioned)

☀️ Solar & Renewable Systems (25 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
    • Wide input voltage tolerance (96% mentioned)
    • Harmonic distortion suppression (90% mentioned)
    • Surge protection with inverters (85% mentioned)

🖥️ Data Centers & Server Rooms (20 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
    • Low-noise operation (93% mentioned)
    • Electrical isolation for clean power (89% mentioned)
    • Compact toroidal design (77% mentioned)

🏥 Medical & Laboratory Facilities (12 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
    • EMI/RFI noise reduction (100% mentioned)
    • Stable output for sensitive devices (92% mentioned)
    • RoHS compliance for safety standards (83% mentioned)

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