4KVA Step Down Single Phase Voltage Transformer | Reliable OEM/ODM Voltage Solution for Global Industrial & Residential Use
Product Introduction
Our 4KVA Step Down Single Phase Voltage Transformer is a high-efficiency, heavy-duty voltage conversion solution purpose-built for global industrial, commercial, and residential applications. Engineered for full-capacity continuous operation and exceptional stability, this 4000VA transformer delivers consistent, precision voltage output for critical equipment including CNC machine tools, laser cutters, electric vehicle (EV) charging stations, medical precision devices, industrial blenders, power distribution cabinets, generator systems, home appliances, and any site with unstable grid voltage. Built with premium-grade materials and compliant with international environmental and safety standards, it ensures long-term, risk-free operation with minimal energy waste and maintenance costs.
Key Features & Unmatched Advantages
- Full-Capacity Reliable Operation: Delivers steady rated 4000VA output under continuous working conditions, perfectly adapting to sustained heavy loads in industrial and residential scenarios.
- Energy-Saving & Low-Loss Design: Features a high-permeability new silicon steel core for noise-free operation, high magnetic flux, and ultra-low no-load and load losses, cutting down energy consumption significantly.
- Superior Thermal Performance: High-purity winding material guarantees excellent electrical conductivity, ultra-low temperature rise, and extended service life even during non-stop operation.
- Industry-Grade Safety & Insulation: H-class insulation materials withstand 3500V high-voltage tests, reinforced high-quality nylon insulation frame, and reliable terminals with exceptional insulation strength eliminate electrical risks.
- User-Friendly & Durable Build: Rugged, long-lasting construction with a convenient wire connection design, compliant with global environmental protection regulations, and adaptable to harsh working temperatures from -15℃ to +45℃.
Why Choose Our 4KVA Single Phase Step Down Transformer?
As a professional voltage transformer manufacturer with ISO9001, CE, and UL certifications, we provide end-to-end OEM/ODM services to meet your unique needs, including custom parameters, appearance, LOGO printing, and packaging. Every unit undergoes 100% strict quality testing before shipment to ensure zero defects. We back our products with a 2-year warranty, free lifetime technical support, on-site installation guidance, and free replacement of components damaged by quality issues during the warranty period. With a monthly production capacity of 10,000 small-power units and 2,000 large-power units, we efficiently fulfill orders of all sizes, with a minimum order quantity (MOQ) of just 1 set. We also offer flexible global shipping options and multiple trade terms, plus free professional product photography to support your marketing.
Technical Specifications
| Parameter |
Detailed Specification |
| Product Name |
4KVA Step Down Single Phase Voltage Transformer |
| Brand |
SHLEIPUSI / OEM/ODM Supported |
| Rated Capacity |
4000VA (Customizable) |
| Model |
BK-4000VA (Customizable) |
| Rated Input Voltage |
Single Phase 380V, 220V (Customizable) |
| Rated Output Voltage |
Single Phase 24V, 12V (Customizable) |
| Working Frequency |
50/60Hz |
| Insulation Class |
Class H |
| Output Precision |
±2% |
| Waveform Distortion |
No Additional Distortion |
| Working Temperature |
-15℃ ~ +45℃ |
| Cooling Method |
Dry Type Air Cooling |
| Certifications |
ISO9001, CE, UL |
| Warranty |
2 Years |



Frequently Asked Questions (FAQ)
- How long is the lead time?
Normally 3-7 working days for standard products. Custom orders take 10-30 days depending on order quantity and specific requirements.
- How do you control product quality?
We conduct professional quality inspection at every stage from raw material intake to final manufacturing. Only products fully meeting our standards are shipped.
- What are your payment terms?
30% deposit for standard products, 50% advance payment for custom products, with the full balance paid before shipment.
- Can you provide technical support for product installation?
Yes, we have a professional technical team responsible for full product installation and application guidance.
- What is your product packaging?
Large products are packed in reinforced wooden cases, while small products use high-strength cartons for full protection during transportation.
- Can you print our logo on the product?
Yes, we accept full OEM and ODM services. Custom logo placement is available for eligible bulk orders.
- Where is your major market?
Our main markets cover Central Asia, East Asia, South Asia, Africa, South America, and North America.
- What is your production capacity?
We have a monthly capacity of 10,000 units for small-power products and 2,000 units for large-power products.
- What is your MOQ?
Our minimum order quantity is 1 set, supporting both sample and bulk orders.
Contact Us
- Tel: +86 15926315252
- Mobile / WeChat: +86 15926315252
- Email: daniel@shlepus.com
- WhatsApp: +86 18979230829