About Sunsin
Sunsin | Medium & High Voltage Three Level NPC Inverter Manufacturer
Shenzhen SUNSIN Technology specializes in R&D, production and service of industrial drive, control and new energy power equipment.
We own mature R&D teams and proprietary leading technologies, offering inverters, motor drives, EV chargers and energy storage converters for mining, metallurgy, machinery and new energy industries. Customized solutions are available to lower costs and boost efficiency for clients.
Adhering to technology-driven and quality-oriented development, we have a nationwide service network with products sold globally. Reliable quality and professional support make us a trusted partner for industrial and new energy manufacturers.
Our Product Series
SUNSIN products sell well at home and abroad with fast-growing overseas business. We focus on R & D and manufacturing of medium and high voltage three-level VFDs. Our drives are trusted for stable performance, premium quality and full technical support, widely applied in mining, oil & gas, metallurgy, marine, power, water treatment and other heavy industries. Browse our product page for more details.
SN3000 General VFD
Three-level medium-high voltage inverter, widely used for fans, pumps and conventional industrial energy-saving projects.
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Marine Frequency Inverter
Coal mine explosion-proof variable frequency drive, specially designed for mine hoist, belt conveyor and scraper conveyor.
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SN4000 Four-quadrant Drive
Regenerative feedback VFD with energy recovery function for hoisting, metallurgy and downhill equipment.
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Marine Type Frequency Inverter
Marine certified frequency converter, anti-vibration, moisture-proof, suitable for ship power and propulsion systems.
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Customized Industrial Solutions
Hardware and software personalized development for oil & gas, port, water treatment and special working conditions.
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Spare Parts & Accessories
Power unit, control board, trigger board and complete set of spare parts for long-term operation maintenance.
View Details →General Heavy-Duty VFD
SUNSIN three-level MV/HV VFD delivers strong overload capacity and ultra-low harmonic output, suitable for most heavy industrial production conditions with stable and reliable operation.
Pump & Fan VFD
Optimized for water supply, sewage and air handling equipment. Smooth speed adjustment realizes energy saving and stable pressure control for long-term continuous operation.
Explosion-Proof VFD
Flameproof enclosure fits flammable and corrosive sites in petrochemical plants, ensuring safe frequency conversion operation for process pumps and compressors.
Mining VFD
Dustproof and shock-resistant design adapts to underground and open-pit mines. It provides steady control for conveyors, hoists and drainage pumps under heavy-load harsh environments.
Marine VFD
Salt mist, moisture and vibration resistant structure meets marine standards. Reliable drive control for ship propulsion and deck machinery on offshore vessels.
Regenerative Drive
Four-quadrant energy feedback design recycles braking energy. Ideal for rolling mills, hoists and high-inertia equipment to reduce power consumption effectively.
Why Global Customers Choose SUNSIN
Professional full-cycle support for frequency converter projects
Product Customization
Custom medium & high voltage VFD according to mining, marine, oil & gas working conditions.
In-house R & D
Free scheme design, parameter selection and project quotation support.
Custom Engineering
Engineer on-site installation, debugging and equipment training service.
Global Technical Support
Worldwide service network, spare parts supply and long-term maintenance.
Development History
Since 2016, SUNSIN has focused on R&D and manufacturing of medium & high voltage three-level VFDs
Global Service Network
We offer timely pre-sales consultation, on-site commissioning and after-sales maintenance worldwide.
Cooperate With Sunsin For Reliable Medium & High Voltage VFD Solutions
With independent R & D laboratory, complete production line and professional after-sales technical team, we provide customized three-level inverter solutions for mining, petrochemical, power, oil & gas industries all over the world.
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