VOLTAGE CONVERTER& Transformer
Manufacturer in China

As the flagship high-capacity model in Shunhong’s pure copper series, the (copper)SHJY-3000VA (Merchant SKU: TN30001) is an ultra-heavy-duty dual-voltage step-down transformer designed to power authentic American 110V and Japanese 100V high-draw kitchenware, commercial-grade appliances, workshop machinery, and precision office tools in 220V domestic environments. Engineered with bilateral independent outlets delivering stabilized 110V on the left and 100V on the right across isolated circuits, it handles two imported devices at once with zero voltage sagging. Built with an extra-thick 1.5mm² flame-retardant pure copper power cable rated for 16A maximum current, a massive 100% pure copper toroidal core, and an 8-fold intelligent safety protection array, it easily absorbs severe inrush startup surges. Finished in a sleek minimalist pure white fire-resistant housing, the (copper)SHJY-3000VA combines heavy industrial performance with modern aesthetic elegance, backed by Shunhong’s 37-year manufacturing heritage and CE, RoHS, FCC, and CQC international quality certifications.

Dual-Socket Simultaneous 110V & 100V Output
Features separate heavy-duty US-standard 3-prong sockets on the left and right flanks. With isolated circuitry and independent load distribution, the left port delivers 110V and the right port supplies 100V simultaneously, allowing you to power two heavy appliances without buying multiple converters.

100% Pure Copper Toroidal Core
Engineered with high-permeability cold-rolled toroidal silicon steel and densely wound heavy-gauge pure copper wire coils. Copper delivers vastly superior conductivity over aluminum, preventing severe voltage drop and excess thermal rise during continuous high-wattage operation.

Extra-Thick 1.5mm² Molded Power Cable & Pure White Fire-Resistant Chassis
Constructed with an integrated 1.2m heavy-duty power cable featuring 1.5mm² thick copper core capable of handling up to 16A load currents. Housed in a flame-retardant V-0 grade ABS casing that resists high cooking temperatures, grease, and mechanical wear.

8-Fold Safety Protection Matrix with Auto-Restart Capability
Comprehensive multi-protection array includes dual thermal sensors, millisecond short-circuit cut-off, leakage lock, flame-retardant shell, stereoscopic convection vents, non-slip base pads, and automatic restart upon troubleshooting.

Whisper-Quiet (<20dB) Toroidal Operation & Civil Aviation Transport Compliance
Operating noise is strictly maintained under 20dB via natural convective dissipation without mechanical fans. Weighing ~9.2kg with no unshielded magnets or liquid electrolytes, it easily complies with civilian aviation baggage and high-speed rail passenger transportation rules.

Engineered specifically for imported American 110V and Japanese 100V high-wattage kitchen appliances, salon styling tools, and precision studio gear, the Shunhong (copper)SHJY-2000VA (Merchant SKU: TN20001) dual-voltage step-down converter transforms domestic 220V power down to independent 110V and 100V heavy-duty outputs. American pressure cookers, blenders, espresso machines, and Japanese IH smart cookers feature delicate microchips and sensitive motors that degrade rapidly under improper voltages or voltage sags. Built with 100% pure copper toroidal windings and a high-flux cold-rolled silicon steel core, this unit exhibits far lower electrical resistance and thermal dissipation than aluminum models, maintaining rock-solid 110V and 100V output with zero voltage collapse under sustained heavy loads. Enclosed in a clean, minimalist pure white fire-resistant housing with an integrated 1.0mm² flame-retardant power cord and an 8-fold multi-protection system, the (copper)SHJY-2000VA delivers whisper-quiet, factory-grade reliability backed by Shunhong’s 37-year manufacturing lineage.

Engineered specifically to solve the voltage incompatibility of American 110V and Japanese 100V appliances in domestic 220V power regions, the Shunhong (copper)SHJY-800VA (Merchant SKU: TN8001) step-down voltage converter features dual independent bilateral outlets. The left socket outputs stabilized 110V for American gear, while the right socket provides exact 100V for Japanese appliances, enabling two imported devices to run simultaneously without cross-circuit interference. Built with 100% pure copper toroidal windings and a high-permeability cold-rolled silicon steel core, its internal electrical resistance and running temperatures are vastly lower than standard aluminum coil models, delivering superior efficiency and zero voltage drift during prolonged duty cycles. Enclosed in a sleek, minimalist fire-resistant pure white ABS casing with an integrated molded power cable and an 8-fold multi-protection network, the (copper)SHJY-800VA provides factory-certified power backed by Shunhong’s 37-year manufacturing lineage and international CE, RoHS, FCC, and CQC certifications. Dual-Port Bilateral Independent Voltage Division: Run US & Japanese Appliances Together

Crafted with 100% pure copper toroidal windings and premium cold-rolled silicon steel, the Shunhong (copper)SHJY-500VA (TN5001) is a specialized dual-voltage step-down transformer engineered for American 110V and Japanese 100V imported personal care and household electronics operating in 220V domestic regions. The chassis features bilateral independent US-standard 3-prong sockets: the left socket delivers calibrated 110V power for American devices, while the right socket supplies authentic 100V for Japanese domestic gadgets—allowing two imported appliances to operate simultaneously without interference or needing separate converters. Enclosed in a sleek, minimalist fire-resistant pure white ABS housing with an integrated molded power cable, its pure copper core delivers superior electrical conductivity, significantly lower running temperatures, and exceptional energy efficiency compared to aluminum counterparts. Certified under CE, RoHS, FCC, and CQC with an 8-fold multi-layer safety matrix, the (copper)SHJY-500VA brings professional 37-year Shunhong manufacturing reliability to dressing tables, vanity counters, and study desks.

Dual Bilateral Independent Outlets: Simultaneous 110V & 100V Dual Output
Features two isolated bilateral US-standard sockets. The left port supplies calibrated 110V for US electronics, while the right port delivers 100V for Japanese devices. Both circuits operate completely independently without cross-interference, powering two overseas appliances at once.

100% Pure Copper Toroidal Core: Superior Conductivity & Minimal Heat
Engineered with premium oxygen-free pure copper magnet wire wound over a high-flux cold-rolled silicon steel core. Pure copper provides vastly superior electrical conductivity compared to aluminum, minimizing coil impedance and thermal buildup while ensuring rock-solid voltage stability with zero drift.

Sleek Minimalist White Fire-Resistant ABS Shell with Integrated Cable
Molded from high-impact fire-rated ABS+PC composite engineering plastic that resists high heat, scratches, and open flames. Paired with an integrated 1.2m molded power cord with a 0.5mm² pure copper core, eliminating loose plug connections and terminal arcing.

8-Fold Full-Spectrum Safety Protection Array with Auto-Fault Recovery
Comprehensive protection array integrates thermal cut-off sensor, millisecond short-circuit cut-off, fuse overload safeguard, leakage lock, fire-resistant casing, bilateral convective vents, anti-slip base pads, and automatic restart upon fault resolution.

Whisper-Quiet (<20dB) Toroidal Operation & Civil Aviation Transport Compliance
Toroidal core delivers smooth, hum-free operation below 20dB via natural convective dissipation without noisy fans. Weighing ~3.0kg with no unshielded magnets or liquid electrolytes, it easily complies with civilian aviation baggage and high-speed rail passenger transportation rules.

Power your imported electronics safely with the Shunhong 200W Pure Copper Transformer. Expertly converting 220V to 110V, this compact and lightweight step-down converter is perfect for travel and home use. Ideal for personal care devices, dental cleaners, and small household gadgets from the US, Canada, and Taiwan. Featuring advanced flame-retardant housing and precise voltage regulation for ultimate safety.

"Small and efficient, cross-voltage hassle-free: This 200W mini step-down transformer, designed for 100V Japanese appliances, easily achieves seamless conversion under 220V voltage environments, ensuring stable operation of equipment."

Engineered as an A-grade dual-use industrial and residential powerhouse, the Shunhong SHJY-3000VA (N30002) step up transformer provides massive, uncompromised 3000VA capacity to operate imported 220V high-wattage equipment on North American 110V electrical lines. Dressed in a sleek white flame-retardant ABS chassis, it combines a high-density toroidal aluminum core with cold-rolled silicon steel to deliver unwavering voltage stability and whisper-quiet performance. Featuring bilateral dual 220V outputs, a heavy-gauge 1.5mm² integrated power cord, and an eight-fold proactive safety matrix, it effortlessly powers imported high-end kitchenware, professional salon blowers, office machinery, and light workshop tools with uncompromising dependability.

Standing at the absolute apex of residential voltage transformation, the Shunhong SHJY-3000VA (N30004) Flagship Step Up Voltage Transformer represents the ultimate power conversion solution for demanding kitchen and household electronics in Japan. Expertly calibrated to transform Japan’s 100V grid power into stable, full-bandwidth dual 220V-240V outputs, this powerhouse is built for international families, culinary gourmets, embassy residences, and expatriate households across Tokyo, Osaka, and nationwide. From high-wattage smart induction cooktops and built-in steam ovens to commercial-grade espresso machines and heavy-duty high-speed food blenders, it delivers unwavering electrical performance without hesitation. Clothed in a pristine, fire-retardant pure white standing enclosure with stereoscopic convective ventilation, it features a heavy 1.5mm² integrated Japanese power cable, a custom-engineered toroidal silicon steel core, and an uncompromising nine-fold thermal overload defense matrix.

Flagship 3000VA Toroidal Core with Maximum Power Delivery: 

Engineered to meet the demanding requirements of authentic culinary passion in Japan, the Shunhong SHJY-2000VA (N20004) Step Up Voltage Transformer converts Japan’s standard 100V electricity into robust, reliable dual 220V-240V outputs. Designed for Chinese expatriates, embassy families, international culinarians, and overseas residents living in Tokyo, Osaka, or anywhere in Japan, this high-performance transformer effortlessly powers imported 220V smart IH rice cookers, high-speed food blenders, convection microwave ovens, multi-purpose air fryers, and high-wattage salon styling tools. Encased in a modern, fire-retardant pure white housing that can be placed horizontally or vertically to save precious kitchen counter space, it features a heavy-duty 1.5mm² integrated Japanese power cord, a zero-drop toroidal silicon steel core, and an intelligent nine-fold safety protection matrix for quiet, continuous home peace of mind.

Heavy-Duty Toroidal Core with Zero Voltage Sag Under Load: 

Bridging the power gap between Japan’s 100V grid and your favorite 220V lifestyle electronics, the Shunhong SHJY-800VA ( N8004) Step Up Voltage Transformer delivers expanded capability in a sleek, compact white form factor. Perfectly tuned for both 50Hz and 60Hz Japanese power networks, this mid-capacity powerhouse is the premier choice for international students, relocated expats, and long-term tourists who wish to use Chinese, British, or European wellness kettles, multi-temperature hot lunch boxes, ionic hair styling tools, and compact household steamers across Japan. Featuring bilateral dual 220V outlets, an integrated heavy-duty Japanese power cable, and an advanced eight-fold thermal cut-off safety architecture, it brings quiet peace of mind to every Japanese apartment or hotel room.

Expanded Capacity Toroidal Core for Balanced 100V to 220V Step-Up:

Engineered specifically for travelers, expatriates, and international students visiting or living in Japan, the Shunhong SHJY-500VA(N5004) Step Up Voltage Transformer seamlessly elevates Japan’s standard 100V grid power into dual 220V outputs. Housed in a pristine, fire-resistant pure white casing with a vertical upright design, this compact unit brings your favorite overseas personal grooming tools, hair styling essentials, and smart mobile lifestyle appliances to life across Tokyo, Osaka, Kyoto, and beyond. Equipped with a custom-molded integrated Japanese power cord, an energy-saving toroidal silicon steel core, and an intelligent eight-fold thermal defense system, it ensures whisper-quiet conversion without disturbing your hotel rest or apartment neighbors.

Toroidal Core Efficiency & Smooth 100V to 220V Step-Up: