‌Suzhou Dufew Electrical Co., Ltd.‌
‌Suzhou Dufew Electrical Co., Ltd.‌
Products
Products

We offer a comprehensive portfolio including resistors, braking units, reactors, power filters, and transformers, with full customization options to meet diverse application requirements.

hina Passive Harmonic Filter Manufacturer, Supplier, Factory

We now have a highly efficient crew to deal with inquiries from clients. Our intention is "100% shopper pleasure by our merchandise quality, price tag & our staff service" and take pleasure in a very good standing amongst purchasers. With quite a few factories, we can easily provide a wide vary of Passive Harmonic Filter, Active Harmonic Filter, The concept of our corporation is "Sincerity, Speed, Services, and Satisfaction". We're going to follow this concept and get more and additional customers' fulfillment.
Passive Harmonic Filter, Our company now has many department, and there have more than 20 employees in our company. We set up sales shop, show room, and product warehouse. In the meantime, we registered our own brand. We have tightened inspection for quality of product.

Hot Products

  • Derivative Voltage Filter

    Derivative Voltage Filter

    Dufew Electric Derivative Voltage Filter (dv/dt Filter) is designed to protect motors driven by VFD systems, inverter drives, and industrial automation equipment from high-frequency PWM switching stress. Installed between the inverter output and motor terminals, it reduces voltage rise rate (dv/dt), limits transient voltage spikes, and helps minimize reflected voltage, common-mode interference, and motor insulation stress. With rated voltage from 220VAC to 1140VAC and rated current from 5A to 1600A, Dufew provides customized motor protection solutions for demanding industrial drive applications.
  • High Power Resistor Box

    High Power Resistor Box

    Dufew High Power Resistor Box is a customized high-power resistor solution manufactured in China for high-power energy dissipation, load testing, braking systems, and discharge applications. Designed with multiple resistor elements inside a reinforced enclosure, it provides reliable thermal management, flexible resistance configuration, and stable performance for heavy-duty industrial equipment, energy storage testing platforms, and large drive systems.
  • Variable Frequency Drive Filter

    Variable Frequency Drive Filter

    Dufew Electric Variable Frequency Drive Filter integrates input-side EMI filtering and output-side motor filtering for VFD and servo drive systems. It helps reduce conducted interference on the power side and high-frequency switching effects on the motor side, including dv/dt and reflected-wave effects. Filter ratings can be selected according to drive voltage, current, motor power, cable length, and installation conditions.
  • Braking Module

    Braking Module

    Dufew Electric CBU Series Braking Module is an IGBT-based dynamic braking component for variable frequency drive systems. It is connected to the DC bus and works with an external braking resistor to dissipate regenerative energy generated during motor deceleration or overhauling operation. Its integrated board-level construction combines the braking circuit, control, temperature monitoring, and fault output in one module for installation inside VFD control cabinets.
  • Inverter Corrugated Resistor

    Inverter Corrugated Resistor

    DUFEW CRR Series Inverter Corrugated Resistors provide reliable energy dissipation for VFD braking systems by converting regenerative energy generated during motor deceleration into heat. Featuring efficient thermal management, strong overload capability, and flexible power and resistance configurations, they can be customized for different industrial drive applications.
  • Output Filter

    Output Filter

    Protect your motors with the Dufew Industrial Output Filter. Designed for VFD and servo drive systems, this motor-side solution attenuates dv/dt voltage spikes, PWM noise, and harmonics in long-distance cable applications. Dufew delivers low-leakage, fully customizable power quality filters for heavy-duty industrial compliance.

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