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Our firm insists all along the quality policy of "product high quality is base of organization survival; consumer fulfillment could be the staring point and ending of an company; persistent improvement is eternal pursuit of staff" along with the consistent purpose of "reputation 1st, purchaser first" for Custom DC Surge Protection Solutions,DC Surge Protection Device (SPD),DC Lightning Surge Protector,Low Voltage Surge Arrester for DC Systems,DC SPD for Renewable Energy Systems, With us your money in risk-free your company in safe and sound . Hope we are able to be your trustworthy supplier in China . Seeking forward for your cooperation .
Custom DC Surge Protection Solutions, We pay high attention to customer service, and cherish every customer. We have now maintained a strong reputation in the industry for many years. We're honest and work on building a long-term relationship with our customers.

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    DC Molded Case Circuit Breaker

    Quality DC molded case circuit breakers are used for overcurrent protection and control in solar photovoltaic battery storage systems and DC circuits. They are available in various rated currents such as 63A, 100A, 125A, 160A, 200A, 225A, 250A, 315A, 400A, and 500A.
  • 3P DC Surge Protective Device

    3P DC Surge Protective Device

    CNLonQcom is a professional manufacturer of 3P DC Surge Protective Devices in China. The DC Surge Protective Device is designed to protect equipment from the damaging effects of DC surges on the power grid. It is mainly used in photovoltaic systems with voltages of DC500V, DC600V, DC800V, DC1000V, and DC1500V.
  • DC combiner box 4 in and 2 out

    DC combiner box 4 in and 2 out

    CNLonQcom's quality DC combiner box 4 in and 2 out has an attractive appearance and is made of corrosion-resistant material, providing durability and seismic resistance. The enclosure material options include stainless steel, stainless steel spray coating, and iron spray coating, among other metal materials. DC combiner box 4 in and 2 out protects the solar DC circuit from overcurrent and overvoltage damage, prolonging the working life of the solar system and improving system safety.
  • 2P DC Surge Protective Device

    2P DC Surge Protective Device

    The 2P DC Surge Protective Device is developed and manufactured by CNLonQcom, a Chinese factory, and provides effective protection against lightning surge voltages for solar power systems (photovoltaic systems). It is suitable for DC voltages of DC500V, DC600V, DC800V, and DC1000V.
  • DC Molded Case Circuit Breaker LQM1-250

    DC Molded Case Circuit Breaker LQM1-250

    CNLonQcom DC Molded Case Circuit Breaker LQM1-250 MCCB 1P 2P 3P 4P for PV System Battery Disconnection Protection
    ●Rated voltage: DC250V/500V/7500V/1000V/1500V
    ●Rated current: 160A/180A/200A/225A/250A
    ●Breaking Capacity Icu: 20kA ●Poles: 1P/2P/3P/4P
    ●Shell material: Bakelite
    ●Conductor material: copper
    ●Certificate: CE, ROHS, ISO9001
  • DC combiner box 8 in and 1 out

    DC combiner box 8 in and 1 out

    CNLonQcom is a manufacturer of DC combiner boxes. This DC combiner box 8 in and 1 out serves as a wiring device in photovoltaic power systems to ensure orderly connection and current collection of PV modules. It allows for easy circuit disconnection during maintenance and inspection, enhancing the safety and reliability of your electrical system.
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  • CNLonQcom: Residential and Commercial Solar System Photovoltaic Circuit System Safety Expert

    In the past month, our company has performed 3D modeling and application scenario videos for our isolation switches and combiner boxes. These have been posted on YouTube, and we welcome you to follow our CNLonQcom channel. Here, I freely share my technical knowledge with anyone who may find it useful. Let's now enjoy the video together.

  • Analysis of the Differences and Advantages/Disadvantages Between AC Circuit Breakers and DC Circuit Breakers

    Circuit breakers are critical components in electrical systems, designed to protect circuits from damage caused by overloads, short circuits, and other faults. Depending on the type of current, circuit breakers are primarily categorized into alternating current (AC) circuit breakers and direct current (DC) circuit breakers. Due to the distinct characteristics of AC and DC power, these two types of circuit breakers exhibit significant differences in design, working principles, and application scenarios. This article provides a detailed comparison of their differences and analyzes their respective advantages and disadvantages.

  • CNLonQcom Wishes a Prosperous Start to the Work

    ​CNLonQcom proudly announces that starting today, we are officially resuming order processing, marking a prosperous beginning to the new year. Over the past year, CNLonQcom, with its expertise and innovative products in the solar energy sector, has gained widespread market recognition and customer acclaim. Entering the new year, CNLonQcom will continue to uphold the spirit of "innovation, efficiency, and reliability," working even harder to provide customers with high-quality products and services.

  • Wenzhou Longqi New Energy Technology Co., Ltd. Receives Globally Recognized TUV Certification for PV Switch - Disconnector, Pioneering a New Era of Photovoltaic Safety!

  • The Role of Fuses in Photovoltaic Systems and How to Choose the Right Ones

    In the rapidly evolving landscape of renewable energy, photovoltaic (PV) systems have emerged as a dominant force in harnessing the sun's power. As these systems become increasingly complex and widespread, the importance of reliable protection mechanisms cannot be overstated. Among these, fuses play a crucial yet often underappreciated role in safeguarding the integrity and safety of PV installations.

  • CNLonQcom Creates 3D Product Models for an Enhanced Customer Experience

    The video showcases the creation process of the handle part for our circuit breaker, LQB1-125Z. This not only highlights CNLonQcom's commitment to product quality but also allows customers to view and understand the product's functionality and design from various perspectives in a novel way. Moving forward, we will progressively release more 3D models of our products, including isolator switches, combiner boxes, solar connectors, and surge protectors, aiming to offer a comprehensive product experience platform. Through these 3D models, customers will be able to understand each product's specific applications and advantages more clearly.

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