TM333-500VA
ShunHong
B5001
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Product Advantage
Enterprise whatsapp account: +86-13690698363
Product Core Advantages
The Shunhong TM333-500VA provides dependable voltage adaptation for imported commercial tools and domestic appliances. Engineered for continuous duty, it ensures minimal heat rise, low acoustic hum, and stable output voltages under sustained loads.
Stable Voltage Regulation
Smoothly converts AC 220V to stable AC 110V, isolating delicate electronics from power grid spikes.
Rated Power & Inrush Handling
Continuous rating of 500VA / 500W with high instantaneous surge capacity to easily start motor-driven appliances.
High-Grade Aluminum Winding
Wound with high-purity aluminum wire for lightweight durability, reliable continuous operation, and lower freight costs
50Hz / 60Hz Universal Frequency
Auto-adapts to both 50Hz and 60Hz grids without manual adjustments or overheating.
Dual-Voltage Multi-Socket Layout
Features US Standard (NEMA 5-15R) with phosphor bronze contacts for tight grip and spark-free connection.
Heavy-Duty Metal Enclosure
Rigid powder-coated steel casing protects internal core components from impacts and workshop debris.
Vertical design, easy to move
Dual-side cross-flow cooling ventilation outlet
High-performance aluminum winding
One-click switch
Iron shell and fireproof insulation layer
Iron shell and fireproof insulation layer
Technical Parameters
Technical Specifications Table
| Parameter | Specification | Notes / B2B Options |
| product model | TM333-500VA (MB5001) | OEM / ODM private label supported |
| voltage convert | 220V to 110V | Rated 500VA / 500W continuous output (Max current approx. 2.3A) |
| Product size | 16.5 × 12 × 7.5 cm | Compact metal casing for wall mount or desktop placement |
| package size | 26 × 16 × 13 cm / 23.5 × 14 × 9.5 cm | Drop-tested reinforced export master carton |
| gross weight | Approx. 2.0 KG (Net Weight: ~1.6 KG) | Protective shock-absorbing export packaging |
| power cord square | Integrated Fixed 3-Core Power Cable (0.75 mm²) | Integrated flexible cord with strain relief |
| socker specification | 1 × 110V US Standard 3-Pin Grounded Socket (Top Facing) | Phosphor bronze clips with anti-sparking tight grip |
| plug specification | Chinese Standard 3-Pin Grounded Plug (Customizable) | Custom destination plug (UK, EU, AU, US) available for OEM |
| materials | High-Grade Aluminum Toroidal Winding + Flame-Retardant Steel Casing | Lightweight high-efficiency aluminum alloy |
| efficiency | ≥ 50% at rated load | Low standby loss, low no-load quiescent consumption |
| rated frequency | 50Hz / 60Hz Auto-Adapting | Seamless cross-border grid frequency synchronization |
| operating cycle | 100% Continuous Duty Cycle | Full-load thermal equilibrium with natural convective airflow |
| type | Step Down Voltage Converter (Toroidal Autotransformer) | Class A insulation grade, industrial grade stability |
| core material | High-Permeability Grain-Oriented Cold-Rolled Silicon Steel (CRGO) | Seamless circular toroidal core for minimal magnetic flux leakage |
| certificate | FCC, RoHS, CQC, CE | 100% 1500V Hi-Pot dielectric test and full-load burn-in aging passed |
Product Uses
| A small 500VA step-down transformer that converts 220V to 110V. Suitable for American 110V small appliances. | |
Commercial & Industrial
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Home & Lifestyle
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Target B2B Use Cases
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Product Operate Guide
When using this 500VA voltage converter, please follow these steps to ensure the safety and efficiency of the equipment:
1. Check the device
Before use, it is important to carry out a comprehensive visual inspection of the converter to ensure that all components are intact and there are no visible damage or defects.
2. Connect the power supply
Properly connect the converter to a 220V power outlet, ensuring that the connection between the power cord and the outlet is secure and meets electrical safety standards.
3. Start the converter
After confirming that the power connection is correct, turn on the switch of the converter to start the voltage conversion process.
4. Electrical connection
After the converter is started and running stably, connect the electrical equipment requiring 110V voltage to the output port of the converter.
5. Safety precautions
During the entire use process, special attention should be paid to the waterproof and moisture-proof measures of the equipment to avoid water sources close to the converter to prevent possible electrical safety accidents. At the same time, ensure that the heat dissipation hole of the converter is not blocked and good ventilation conditions are maintained to facilitate the effective heat dissipation of the equipment.
FAQ
Q1: What safety and environmental certifications do your voltage converter products have?
A1: Our voltage converter products have been subjected to rigorous quality inspection and have obtained several international and domestic certifications including CE, ROHS and FCC. These certifications ensure that products meet international standards in terms of electrical safety, environmental standards and electromagnetic compatibility, providing you with a safer and more environmentally friendly experience.
Q2: What types of electrical equipment can this voltage converter be adapted to?
A2: Our voltage converters are designed for appliances with 110V voltage and are suitable for a wide range of household appliances including air purifiers, table lamps, toothwashers, breast pumps and more. In addition, it is also suitable for office equipment such as small printers and scanners, as well as beauty salon and medical products such as home curling irons, face steamers and home blood pressure monitors.
Q3: What after-sales services do you provide to ensure our experience?
A3: We provide comprehensive after-sales service, including product consultation, user guidance and breakdown repair. Our customer service team is ready to answer your questions and provide technical support. We also provide a certain period of warranty service to ensure that your use of the process is worry-free.
Q4: How do I choose the right voltage converter for my appliance?
A4: When choosing a voltage converter, the rated voltage and power of the appliance must first be considered to ensure that the output specifications of the converter match the needs of the appliance. Secondly, according to the frequency and duration of use of the appliance, choose a converter that can continue to provide stable power. Finally, consider the brand reputation, product quality and price, choose cost-effective products.
Q5: What do I need to do before choosing a voltage converter?
A5: Before choosing a voltage converter, you need to know the rated voltage and power of the appliance and confirm the supply voltage in your area. At the same time, consider the use of the electrical environment and frequency, choose the appropriate converter type and brand. Learn about the different brands and prices in the market to help you make an informed choice.
Q6: How to choose the right voltage converter according to the region?
A6: When choosing a voltage converter, it is necessary to consider the voltage standards of different regions. For example, if you use American appliances in Europe, you should choose a 220V to 110V converter; If you use European appliances in the United States, you should choose a 110V to 220V converter; If you use Japanese electrical appliances in China, you should choose a 220V to 100V converter.
Q7: How to determine the required transformer power?
A7: Because the transformer will have a loss at work, it is recommended to choose a converter with a power greater than 40% of the electrical power. For example, if the electrical power is 200W, a converter above 280W should be selected.
Q8: How to find the power parameters of the appliance?
A8: The power parameters of the appliance can usually be found on the device itself, on the bottom, or in the manual. Please check these places carefully for accurate power information.
