（copper）SH-DB（220V to 110V/100V）
Shunhong
（copper）SH-DB（220V to 110V/100V）
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Product Advantage
The Pure Copper Step Down Transformer Series (2000VA-5000VA) delivers stable 220V to 110V/100V voltage conversion with up to 98% efficiency (≥95% continuous rating). Powered by a 100% pure copper toroidal core, this certified (FCC, CE, RoHS, CQC) heavy-duty single phase electric transformer safely runs air conditioners, refrigerators, coffee machines, power tools, and industrial equipment.
Core Product Advantages
Wide Voltage Conversion: Converts 220V/230V/240V input to 110V/100V output for US and Japanese appliances in 220V regions.
Flexible Capacities: Available in 2000VA, 3000VA, 4000VA, and 5000VA models to match your specific load requirements.
Pure Copper Toroidal Core: Delivers up to 98% conversion efficiency with minimal heat loss and quiet continuous operation.
Dual Frequency Support: Fully compatible with 50Hz/60Hz power grids (converts voltage only, not frequency).
Multi-Socket Output: Built with 2 x 110V US outlets and 1 x 100V Japanese outlet to run multiple devices simultaneously.
Real-Time LED Display: Live digital monitoring of input and output voltage for immediate status tracking.
Safety & Structural Highlights
Flame retardant protection
Temperature control protection
Overload protection
Short-circuit protection 
Quick heat dissipation
Portable handle
LED display screen
Technical Parameters
| Product Model | 2000VA | 3000VA | 4000VA | 5000VA |
| Voltage convert | 220V to 110V/100V | |||
| Product size | 27×19.2×17cm | |||
| package size | 35×26×25cm | |||
| Gross Weight | 13kg | 16.6kg | 18.7kg | 20.5kg |
| Power cord square | 1.2m (Detachable Power Cord) | No Cord, DIY Wiring Required | ||
| Socket Specification | American Standard socket×3 | |||
| Plug Specification | customizable plugs, please consult customer service | |||
| Materials | copper wire winding | |||
| Efficiency | ≥98% | |||
| Rated Frequency | 50/60Hz | |||
| Operating cycle | 30/60min | |||
| Type | Dry-type | |||
| Core material | Ring transformer | |||
| certificate | CE、FCC、RoHs | |||
Available Models
2000VA
Input 220V
Output 100V / 110V
3000VA
Input 220V
Output 100V / 110V
4000VA
Input 220V
Output 100V / 110V
5000VA
Input 220V
Output 100V / 110V
Customization Options: Power capacities, input/output voltages, plug styles, and socket configurations can be customized upon request.
Product Uses
Typical Applications
Office & Commercial Applications The 220V to 110V/100V voltage converter can support a variety of 110V/100V devices
| Home Applications The 220V to 110V/100V voltage converter can support a variety of 110V/100V devices
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Target Applications
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Product Operate Guide
Transformer usage procedure
FAQ
Q1: How do I choose the right transformer capacity (2000VA–5000VA) for heavy-duty appliances like air conditioners or refrigerators?
A: Motor-driven appliances—such as air conditioners, refrigerators, blenders, and power tools—generate an instantaneous startup surge that can reach 2 to 5 times their rated working wattage. To ensure stable operation without tripping protection, always select a transformer with a capacity at least 100% larger (2x) than the rated wattage of your appliance.
Q2: Can this transformer run 24/7 continuously under full load?
A: Yes. Built with high-efficiency pure copper toroidal technology (up to 98% efficiency), this transformer supports continuous 24/7 operation. However, to maximize equipment lifespan and avoid unnecessary thermal stress, we recommend keeping the continuous running load within 80% of the transformer's maximum rated capacity.
Q3: Does this step-down transformer convert frequency (50Hz to 60Hz), and will it affect my appliances?
A: No. Step-down transformers adjust voltage levels only and do not change frequency. The output frequency will match your local power grid (a 50Hz input yields a 50Hz output; a 60Hz input yields a 60Hz output). Most modern household and commercial appliances operate normally across 50Hz/60Hz, though motor speeds or electronic clocks may show slight variations.
Q4: Can I power multiple US (110V) and Japanese (100V) appliances simultaneously?
A: Yes. The transformer is equipped with independent 110V (US standard) and 100V (Japanese standard) output sockets, allowing you to run both types of appliances at the same time. Ensure the combined total wattage of all connected devices stays well within the transformer's total power limit.
Q5: What type of wall outlet or circuit breaker capacity is required to safely run a 5000W transformer?
A: For a 5000W transformer operating at maximum capacity, we strongly recommend connecting it to a dedicated line with a 32A circuit breaker (air switch) and heavy-duty input wiring. Avoid standard low-amperage household extension sockets to prevent circuit tripping or line overheating.
