SHJY-800VA（copper）
Shunhong
TN8004
| Quantity: | |
|---|---|
Product Features & Benefits
Enterprise whatsapp account: +86-13690698363
Specially engineered for Chinese students, expats, and cross-border families in Japan, the Shunhong (Copper) SHJY-800VA (TN8004) seamlessly converts Japanese 100V mains power into dual synchronized 220V Chinese standard outputs. Housing a 100% pure copper toroidal core inside a minimalist fire-retardant white chassis, it safely powers health tea kettles, food warmers, ionic hair styling tools, and air purifiers without crowding compact Japanese living spaces.
Dual Synchronized 220V Outputs: Double Efficiency for Japanese Rentals
Standard single-socket converters force you to constantly swap cables between devices. The (copper)SHJY-800VA features two independent secondary circuits feeding left and right standard China 5-hole sockets, powering two domestic appliances concurrently with unwavering voltage stability.
100% Pure Copper Toroidal Core: Low Loss & Sustained Longevity in Japan
Unlike aluminum coils that suffer high resistance and rapid heat accumulation when stepping up from 100V, our 100% pure copper toroidal core offers superior conductivity, lower operating heat, and over 92% power conversion efficiency. It filters Japanese grid spikes and keeps 220V output from drifting, shielding sensitive microchips in beauty tools and printers.
One-Touch Instant Voltage Boost: Effortless for All Generations
Features a heavy-duty physical switch and a high-clarity power LED. Plug into a Japanese 100V wall outlet and flip the switch for instant 220V output with zero preheating or software setup. Eliminates repeated socket pulling and protects against contact arcing.
8-Fold Linked Full-Domain Safety: Safe Unattended Operation in Japan
Integrates short-circuit cutoff, temperature-limiting thermal protection, anti-EMI shielding, exterior chassis leakage barrier, V-0 flame-retardant housing, natural convection channels, anti-slip feet, and automatic reset after faults clear, giving total peace of mind in Japanese studio apartments.
Ultra-Quiet (≤20dB) & Airline Baggage Security Compliant
Operating noise is rated below 20dB, ensuring completely undisturbed sleep in compact Japanese studio apartments. The unit contains zero magnetic components or liquid substances, fully compliant with international baggage transport regulations.
37-Year Factory Excellence & Global Customization Services
Built with 37 years of specialized voltage converter manufacturing mastery since 1987. Backed by FCC, RoHS, CQC, and CE certifications. Supports customized UK/EU/AU plugs and non-standard output voltages with dependable production lead times.
Made of pure copper material
Dual 220V output transformer
Thermal protection
Flame retardant protection
Short-circuit protection
Portable handle and hook
Technical Specifications
| Product Model | (copper)SHJY-800VA | Merchant SKU | TN8004 | |
| Rated Capacity | 800VA (Pure Copper Core) | Voltage Conversion Direction | 100V to Dual 220V Step Up | |
| Input Configuration | Japan Standard 2-Prong Plug, Integrated 1.2m Flame-Retardant Cable (0.5mm²) | Output Sockets | 2 × China Standard 5-Hole Grounded Sockets (Simultaneous 220V) | |
| Internal Core Material | 100% Pure Copper Toroidal Windings + Cold-Rolled Silicon Steel Core | Max Through Current | 2.5A | |
| No-Load Standby Current | ~10mA | Efficiency | ≥80% | |
| Net Weight | Approx. 3.80 kg (8.38 lbs) | Gross Weight | Approx. 4.20 kg (9.26 lbs) | |
| Product Dimensions | 19.0 × 15.0 × 6.5 cm (7.48 × 5.91 × 2.56 in) | Packaging Dimensions | 26.0 × 25.0 × 14.0 cm (10.24 × 9.84 × 5.51 in) | |
| Safety Protection System | Thermal Cut-Off, Short-Circuit, Anti-EMI, Leakage, V-0 Fire-Resistant Shell, Convection Vents, Anti-Slip Base, Auto-Reset | Housing Material & Color | V-0 Grade Fire-Retardant ABS | |
| Control | Physical Heavy-Duty Rocker Switch | Indicator | LED Power Indicator Light |
Compatible Devices & Applications
Continuous duty recommended under 640W
|
|
Mid-power motor appliances (hair dryers, food processors) experience inrush current during startup. Keep continuous total wattage under 640W for maximum reliability and cool running. | |
How to Use This Voltage Converter
Frequently Asked Questions About Voltage Converters
Why is (copper)SHJY-800VA recommended for domestic hair dryers in Japan?
Hair dryers contain high-heat resistance coils and high-speed blower motors that draw substantial current. Japanese 100V voltage requires significant stepping to 220V; aluminum-wound converters often heat up rapidly and suffer from voltage drop under such loads, reducing air temperature and blower speed. The 100% pure copper core in (copper)SHJY-800VA maintains stable 220V power without voltage sag.
Can I connect a baby food maker and an ultrasonic humidifier to both sockets at once in Japan?
Yes. Both the left and right China standard 5-hole sockets operate via isolated circuits delivering calibrated 220V simultaneously. As long as their total running wattage remains within the recommended 640W continuous limit, they can operate together safely.
Does this transformer make buzzing noises in a quiet Tokyo apartment bedroom?
No. Thanks to the seamless cold-rolled silicon steel ring and precision tightly-wound pure copper wire, magnetic leakage and vibration are virtually eliminated. Operating sound is strictly below 20dB, ensuring serene sleeping conditions.
