45kVA 480V to 208V Dry-Type Isolation Transformer for Industrial Power Distribution

45kVA Dry-Type Isolation Transformer

480V Primary / 208Y/120V Secondary | Three Phase | 60Hz

The 45kVA dry-type isolation transformer is a reliable and efficient solution for stepping down 480V three-phase power to 208Y/120V while providing full electrical isolation. Designed for North American (60Hz) and global power systems, this transformer ensures enhanced safety, stable voltage distribution, and long-term performance in industrial, commercial, and infrastructure applications.

Manufactured by PowerNex, a China-based leading manufacturer, supplier, factory, and wholesale exporter, this dry-type electrical isolation transformer is widely supplied to North America and worldwide markets, including the United States, Canada, Brazil, Argentina, Australia, Southeast Asia, the Middle East, and Europe.

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Technical Specifications (Standard Model)

Item	Specification
Rated Capacity	45kVA
Transformer Type	Dry-Type Isolation Transformer
Primary Voltage	480V
Secondary Voltage	208Y/120V
Phase	Three Phase
Frequency	60Hz
Insulation Class	Class F (Standard) / Class H (Optional)
Cooling Method	Air Natural (AN)
Winding Material	Copper (Standard) / Aluminum (Optional)
Temperature Rise	80K / 115K
Enclosure	NEMA 1 (Indoor) / NEMA 3R, IP23, IP44 (Optional)
Installation	Indoor / Semi-Outdoor
Efficiency	High-efficiency design, low losses

⚡ Key Features & Benefits

Full Electrical Isolation

Provides complete galvanic isolation between the primary and secondary circuits, helping protect equipment from electrical noise, ground loops, and transient disturbances.

Stable & Reliable Power Conversion

Ensures a consistent 208Y/120V output from a 480V input, suitable for mixed loads such as lighting, control systems, automation panels, and sensitive electronics.

Dry-Type, Oil-Free Design

No oil, no leakage risk, no fire hazard—ideal for indoor installations, commercial buildings, and environments with strict safety requirements.

Low Maintenance & Long Service Life

Robust insulation systems and optimized thermal design reduce maintenance costs and ensure dependable long-term operation.

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🏭 Typical Applications

• Industrial manufacturing plants

• Commercial buildings & office facilities

• Data centers & IT infrastructure

• Automation and control panels

• HVAC systems

• Hospitals and medical facilities

• Infrastructure and utility projects

This 45kVA dry-type isolation power transformer is commonly used wherever 480V distribution systems must safely supply 208Y/120V loads.

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🌍 North America & Global Market Supply

PowerNex supplies dry-type isolation transformers for global sales, serving customers in:

United States, Canada, Brazil, Argentina, Australia, Indonesia, Malaysia, Philippines, UAE, Saudi Arabia, Russia, Germany, France, and other international markets.

As a factory-direct transformer manufacturer, we support:

• OEM & ODM projects

• Wholesale and bulk supply

• Long-term distributor partnerships

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🛠 Customization & Engineering Support

We offer fully customized dry-type isolation transformers tailored to your project needs:

• Custom voltage combinations

• Different kVA ratings (10kVA–3000kVA)

• Copper or aluminum windings

• Special insulation systems

• Enclosure customization (NEMA / IP)

• Special environmental or altitude requirements

Our engineering team works closely with clients to ensure each transformer meets application conditions and regional standards.

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📜 Certifications & Standards Compliance

PowerNex dry-type isolation transformers can be designed and tested to meet international and regional standards, including:

• UL (North America)

• CSA (Canada)

• CE (Europe)

• ANSI / IEEE

• IEC

Certification scope depends on project requirements and market destination.

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📌 Project Case Study – North America

Industrial Facility Power Distribution Upgrade

Location: North America
Application: Industrial control and auxiliary power system
Product Supplied: 45kVA Dry-Type Isolation Transformer (480V → 208Y/120V)

Challenge:
The client required a safe, code-compliant solution to supply 208Y/120V loads from an existing 480V three-phase distribution network, with minimal maintenance and high safety standards.

Solution:
PowerNex supplied a 45kVA dry-type electrical isolation transformer, designed for 60Hz operation, with a NEMA 1 enclosure and Class F insulation.

Result:

• Stable and isolated power output

• Improved system safety and reliability

• Smooth integration into the client’s electrical system

🔒 Safety, Protection & Performance Design

The 45kVA dry-type isolation transformer from PowerNex is engineered with multiple layers of electrical and thermal protection to ensure stable operation in demanding environments.

Built-in Protection Options

• Electrostatic shield (optional) for noise and harmonic reduction

• Over-temperature protection (PT100 / thermal sensors optional)

• Short-circuit withstand design

• High mechanical strength windings to resist vibration and inrush current

These features help protect downstream equipment while improving overall system reliability.

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🌡 Thermal Management & Insulation System

PowerNex applies optimized thermal design to ensure efficient heat dissipation and long service life.

• Optimized airflow channels for natural air cooling

• Low-loss core material to minimize heat generation

• Class F insulation as standard, Class H available for higher temperature environments

• Reduced hot-spot temperature to extend insulation lifespan

This makes the transformer suitable for continuous duty operation in industrial and commercial power distribution systems.

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🔌 Electrical Compatibility & System Integration

This 480V to 208Y/120V dry-type isolation transformer is designed for seamless integration with:

• North American 480V three-phase distribution systems

• Panelboards and switchgear

• MCCs (Motor Control Centers)

• UPS systems and backup power solutions

The transformer supports balanced and unbalanced loads, making it ideal for mixed-use applications where lighting, control circuits, and equipment share the same power source.

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🏢 Indoor & Project Installation Flexibility

PowerNex dry-type isolation transformers are designed with installation flexibility in mind.

Installation Options

• Floor-mounted or wall-mounted (depending on enclosure and rating)

• Indoor electrical rooms

• Commercial buildings and plant rooms

• Clean environments where oil-filled transformers are not permitted

Optional enclosures such as NEMA 3R or IP-rated housings allow semi-outdoor or protected outdoor installations.

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🌱 Energy Efficiency & Environmental Benefits

Compared to traditional oil-filled transformers, dry-type isolation transformers offer:

• Oil-free, environmentally friendly operation

• No leakage or contamination risk

• Reduced fire hazard

• Lower insurance and compliance costs

PowerNex designs transformers with high efficiency cores and optimized winding layouts to reduce no-load and load losses, supporting energy-saving initiatives worldwide.

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📦 Manufacturing Capability & Quality Control

All PowerNex transformers are manufactured under strict quality management procedures:

• Precision core cutting and stacking

• Vacuum pressure impregnation (VPI) or resin-based insulation processes (as required)

• In-house routine and type testing

• Electrical, insulation, and functional verification

Each unit is inspected before shipment to ensure consistent performance and compliance with project specifications.

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🚚 Packaging, Logistics & Global Delivery

PowerNex provides secure packaging and export-ready logistics solutions for global customers.

• Shock-resistant wooden crates or steel frames

• Moisture protection for long-distance shipping

• Sea freight, air freight, and multimodal transport options

• Export documentation support

We have extensive experience shipping transformers to USA, Canada, South America, Australia, Southeast Asia, Middle East, and Europe.

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📊 Typical Transformer Rating Range (Available)

While this page focuses on the 45kVA model, PowerNex supplies a full range of dry-type isolation transformers:

• Capacity range: 10kVA – 3000kVA

• Primary voltages: 208V, 380V, 400V, 415V, 440V, 480V, 600V

• Secondary voltages: 120V, 208V, 220V, 230V, 240V, 277V, 400V

• Frequency: 50Hz / 60Hz

This allows customers to standardize across projects while working with a single manufacturer.

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🧠 Engineering Support & Technical Assistance

PowerNex provides professional technical support throughout the project lifecycle:

• Pre-sales technical consultation

• Load calculation and transformer selection

• Drawing approval and data sheet confirmation

• Installation guidance and commissioning support

Our team helps ensure the transformer is correctly specified for both North American electrical codes and international applications.

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❓ Frequently Asked Questions (FAQ)

Q: Is this transformer suitable for North America?
Yes. It is designed for 480V / 208Y/120V, 60Hz, fully compatible with North American power systems.

Q: Can this transformer be customized?
Yes. Voltage, kVA rating, insulation class, enclosure type, and certifications can all be customized.

Q: Does PowerNex support UL or CSA certification?
Yes. UL, CSA, and CE compliance can be supported based on project requirements.

Q: Is this transformer suitable for sensitive equipment?
Yes. Electrical isolation helps reduce noise, surges, and ground loop issues.

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📈 Long-Term Value for Distributors & EPC Contractors

Choosing PowerNex as your transformer supplier offers:

• Factory-direct pricing

• Stable long-term supply

• OEM branding support

• Consistent quality across projects

This makes PowerNex an ideal partner for distributors, EPC contractors, and system integrators serving global markets.

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📞 Contact PowerNex for Technical Details & Quotation

If you are sourcing a 45kVA dry-type isolation transformer, or need a customized 480V to 208Y/120V three-phase power transformer for North America or global projects, PowerNex is ready to support your requirements.

Contact us today to receive:

• Technical datasheets

• Engineering consultation

• Competitive pricing

• Delivery schedules