‌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

  • 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.
  • 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.
  • Detuned Harmonic Filter

    Detuned Harmonic Filter

    Designed for low-voltage power factor correction systems with nonlinear loads, Dufew Electric Detuned Harmonic Filter combines a detuned reactor with a power capacitor to reduce resonance risk and limit harmonic stress on capacitor banks. It supports VFDs, rectifiers, converters, and industrial facilities, with configurations selected according to voltage, compensation capacity, harmonic conditions, and installation requirements.
  • Inverter Braking Resistor Cabinet

    Inverter Braking Resistor Cabinet

    Dufew Electric Inverter Braking Resistor Cabinet is a professional VFD braking resistor solution manufactured in China for regenerative braking systems. Designed to absorb excess energy generated during motor deceleration, it converts regenerative electrical energy into thermal energy to prevent inverter DC bus overvoltage faults. With modular corrugated resistor assemblies, reinforced copper busbar connections, and customized thermal management design, the cabinet supports power ratings from 20KW to 500KW and working voltage up to 3000V. It is widely used in cranes, elevators, mining equipment, steel mills, lifting systems, and other heavy-duty variable frequency drive applications requiring reliable braking performance.
  • Load Resistor Box

    Load Resistor Box

    Dufew Load Resistor Box is a professional resistive load testing device designed to simulate electrical loads for UPS systems, generators, inverters, power supplies, and energy storage equipment. By combining multiple resistor units with independent load circuits, it enables flexible load adjustment for no-load, partial-load, full-load, and overload testing. With power ratings up to 30KW, resistance values from 0.01Ω to 1KΩ, and customizable configurations, it provides reliable solutions for factory testing, aging tests, and laboratory verification.
  • Input Line Reactor

    Input Line Reactor

    Dufew Electric Input Line Reactor is a professional AC power protection component designed for installation between the power supply and variable frequency drive (VFD) input terminals. It helps reduce harmonic distortion, suppress voltage surges, stabilize power quality, and protect inverter components from unstable grid conditions. With rated voltage from 220VAC to 1140VAC and current range from 5A to 3800A, Dufew provides customized reactor solutions for industrial automation, motor drive systems, renewable energy equipment, and heavy-duty electrical applications.

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