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MAXIMUM EFFICIENCY.
MAXIMUM RELIABILITY.

Manufacturing Quality Electrical Transformers in Asia since 1966.

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BUILT FOR PEACE OF MIND

Trusted Since 1966

With humble beginnings, Poly was founded in Singapore in 1966 and has evolved from a one-man shop to a successful business with operations in China serving reputable clients around the world.

For over 50 years, we have been helping SMEs, multinational corporations, and government institutions create reliable and innovative electrical solutions. All our power transformers are custom-designed by our engineers to meet your exact business needs.

  • Custom-engineered transformers for unique requirements
  • Manufactured with superior quality materials
  • Easy to install, maintain, and built to last
  • Stringent testing and quality assurance protocols
Learn More About Us
Transformer Manufacturing

Our Quality Assurance

We believe in good design and use only insulation systems approved by Underwriters Laboratory Inc. USA (UL), superior quality materials, and follow stringent testing standards.

UL-Approved Insulation

All insulation systems comply with Underwriters Laboratory Inc. (UL) standards for safety and performance.

Superior Materials

We use only high-grade copper windings and core materials to ensure maximum efficiency and longevity.

Rigorous Testing

Every transformer undergoes comprehensive testing including dielectric, temperature rise, and load tests.

Our Product Range

We specialize in dry-type low voltage transformers, with a focus on isolation transformers for critical applications.

Isolation Transformer

Isolation Transformer

Ideal for data centers and UPS systems to eliminate electrical noise and ground loops.

  • • 50/60 Hz operation
  • • 400V primary, 400V secondary
  • • UL-certified insulation
  • • Low noise design
Auto Transformer

Auto Transformer

Compact design for voltage regulation in industrial and commercial applications.

  • • Step-up/step-down capability
  • • High efficiency (>98%)
  • • Low impedance
  • • Custom tap configurations
Control Transformer

Control Transformer

Provides stable voltage for control circuits in machinery and automation systems.

  • • 230V/115V or 400V/230V
  • • Fused primary protection
  • • Encapsulated windings
  • • DIN rail mounting option
Toroidal Transformer

Toroidal Transformer

Low electromagnetic interference design for sensitive electronic equipment.

  • • Low stray magnetic field
  • • High efficiency
  • • Low mechanical hum
  • • Compact and lightweight
UPS Isolation Transformer

UPS Isolation Transformer

Specifically designed for uninterruptible power supply systems.

  • • High surge withstand
  • • Low zero-sequence impedance
  • • Enhanced safety isolation
  • • Compatible with all major UPS brands
Data Center Transformer

Data Center Transformer

High-reliability units for mission-critical IT infrastructure.

  • • Redundant cooling design
  • • Low partial discharge
  • • Fire-retardant materials
  • • 24/7 operational rating
Multi-Winding Transformer

Multi-Winding Transformer

Custom configurations with multiple secondary windings for complex systems.

  • • Up to 6 secondary outputs
  • • Independent voltage regulation
  • • Isolated circuits
  • • Custom enclosure options
Custom Power Transformer

Custom Power Transformer

Fully engineered to your specifications for unique industrial applications.

  • • Any voltage combination
  • • Special cooling requirements
  • • Hazardous location ratings
  • • Full engineering support

Why Choose Poly Transformers?

Over five decades of engineering excellence and customer trust.

50+ Years Experience

Since 1966, we've delivered reliable transformers across Asia and beyond.

Global Operations

Manufacturing in Singapore and China serving clients worldwide.

UL Certified

Insulation systems approved by Underwriters Laboratory Inc. USA.

Custom Engineering

Every transformer can be tailored to your exact technical requirements.

50+

Years in Business

1000+

Transformers Delivered

40+

Countries Served

99.7%

Customer Satisfaction

Frequently Asked Questions

What types of transformers do you specialize in?

We specialize in dry-type low voltage transformers, with a particular focus on isolation transformers for data centers, UPS systems, and industrial applications. We also manufacture auto transformers, control transformers, toroidal transformers, and custom power transformers.

Can you custom-design transformers?

Yes, all our power transformers can be custom-designed by our engineers to fit your specific business needs. We work closely with clients to develop solutions that meet exact voltage, current, physical, and environmental requirements.

What quality standards do you follow?

We use insulation systems approved by Underwriters Laboratory Inc. USA (UL), superior quality materials, and follow stringent testing standards. Our manufacturing processes are designed to ensure maximum efficiency, safety, and reliability.

Where are your manufacturing facilities?

We have our head office and manufacturing plant in Singapore, and a manufacturing plant in Changshu, China. This dual-location strategy allows us to serve global clients efficiently while maintaining consistent quality standards.

Do you provide testing and certification?

Yes, we have comprehensive testing facilities and provide both in-house and third-party test certificates. Our testing includes dielectric strength, temperature rise, load tests, and more to ensure every transformer meets or exceeds specifications.

Get in Touch

Our experienced consultants are ready to assist you with any questions.

Singapore Headquarters

Blk 26 Kallang Place #01-14/15
Singapore 339157
+65 6298 8088
+65 6292 0888
sales@polytransformers.com
GST & Business Reg: 200009271-N

China Manufacturing Plant

Poly (Changshu) Special Transformer Co. Pte Ltd
常熟市波力特种变压器有限公司
No. 3, Sanfeng Industrial Park, Yushan Forest Farm
Changshu, Jiangsu 215550, China
+86-512-5240 2798
+86-512-5240 2948
chenmingdui@126.com
Visit Official Website to Contact

We respond to all inquiries within 24 hours

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