DC Circuit Protection
Zhejiang Dongan Electrical Co., Ltd. DC circuit protection products are a series of professional low-voltage electrical devices designed for direct current systems, which can effectively prevent overload, short circuit, overvoltage and other faults, and ensure the safe and stable operation of DC circuits and equipment. Widely used in solar photovoltaic, battery energy storage, electric vehicle charging, data center, industrial DC distribution and other fields, it is an essential protection component in modern DC power systems.
Core Advantages
● Professional DC Design: Dedicated to the characteristics of DC circuits, with special arc extinguishing and current limiting technologies to solve the problem of difficult arc interruption in DC systems.
● Multiple Certifications: All products comply with IEC/EN standards, with CE, CB, TUV, CCC and other certifications, and pass ROHS 2.0 testing, ensuring reliable quality and environmental safety.
● Customizable Services: Support customized production according to customer drawings or samples, with complete pre-sales communication, sample confirmation and after-sales service systems.
● Strong Production Capacity: Equipped with advanced automatic test lines, short current test machines, overload test machines and other production equipment, with stable product performance and efficient delivery capacity.
Small Category 1: DC Miniature Circuit Breaker
Zhejiang Dongan Electrical Co., Ltd. DC miniature circuit breaker (DC MCB) is a compact DC protection device with small size and convenient installation, which is suitable for small and medium-capacity DC circuits. It adopts thermal-magnetic release structure, which can quickly respond to overload and short-circuit faults, and protect low-power DC equipment and small-scale DC systems.
Core Features
● Compact structure, compatible with standard DIN-rail mounting.
● Special DC arc extinguishing design to ensure safe circuit breaking.
● Multiple tripping curves (Type B/C/D) for different load scenarios.
● Rated voltage covers DC24V–DC1000V, rated current from 1A to 125A.
Application Scenarios
Household solar systems, small battery packs, low-power DC equipment, small energy storage devices, etc.
Small Category 2: DC Molded Case Circuit Breaker
Zhejiang Dongan Electrical Co., Ltd. DC molded case circuit breaker (DC MCCB) is a high-performance DC protection device with large rated current and high breaking capacity, which is suitable for medium and large-capacity DC systems. It has stable performance and strong fault-breaking ability, and can provide reliable protection for industrial DC distribution, energy storage stations and other high-power scenarios.
Core Features
● High breaking capacity (up to 100kA) to cope with high short-circuit current.
● Rated voltage covers DC24V–DC1500V, rated current from 16A to 1600A.
● Multiple pole numbers (2P/3P/4P) and polarity options (polar/non-polar).
● Suitable for harsh environments with wide operating temperature range (-40℃ to +75℃).
Application Scenarios
Medium and large-scale solar PV systems, battery energy storage stations, EV charging piles, industrial DC distribution lines, data center DC power supply, etc.
Small Category 3: DC Fuse Holder
Zhejiang Dongan Electrical Co., Ltd. DC fuse holder is a matching installation component for DC fuses, which is used to fix and protect DC fuses in DC circuits. It has good insulation and connection performance, and can be matched with various specifications of DC fuses to form a complete DC overcurrent protection system.
Core Features
● High-quality insulating material, with good flame retardant and insulation properties.
● Compact and firm structure, easy to install and replace fuses.
● Suitable for DC circuits of different voltages and currents, with good compatibility.
● Can be matched with standard DC fuses to meet different protection requirements.
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T2 DC1000V Surge Protector Device SPD
GREENWATT factory’s T2 DC1000V Surge Protector Device SPD is designed to protect high-voltage DC1000V systems from voltage surges. It’s designed for large PV arrays, medium to large energy storage systems, and DC power lines that operate at DC1000V . It limits dangerous voltage spikes caused by lightning or grid issues, keeping expensive equipment like high-voltage inverters and battery clusters safe. It’s built to handle the higher demands of 1000V systems, with strong surge tolerance and reliable performance.
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T2 DC500V Surge Protector Device SPD
Summary: The T2 DC500V Surge Protector Device SPD is a secondary DC surge protection device manufactured by GreenWatt, a subsidiary of Zhejiang Dong'an Electric. It focuses on providing stable overvoltage protection for 500V DC systems. This product effectively suppresses voltage spikes caused by lightning strikes and grid fluctuations. It is suitable for small energy storage systems, low-voltage photovoltaic arrays, DC distribution lines, and other scenarios, protecting the stable operation of critical equipment such as inverters and battery management systems. It features easy installation, durable operation, and precise protection.
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DC1000V Solar DC Fuse Holder
GREENWATT is a professional company specializing in the manufacture of DC1000V solar DC fuse holders, dedicated to providing targeted protection for photovoltaic (PV) circuits. These DC1000V solar DC fuse holders are specifically designed for the DC side of PV systems, precisely matching the DC1000V voltage requirements of PV array strings and inverters, and are widely used in residential, commercial, and small utility-scale PV projects. The product features an advanced pull-out design, greatly facilitating fuse replacement. Furthermore, GREENWATT offers a 3-year warranty on this product series, along with customized color services, providing global users with long-lasting and flexible DC circuit protection solutions.
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DC1000V PV Fuse Holder
The DC1000V PV fuse holder is a high-voltage protection component specifically designed for the DC side of photovoltaic (PV) systems, suitable for DC circuit protection of PV inverters. As a professional DC MCCB manufacturer, GreenWatt provides reliable DC1000V fuse holders that can be installed with DC1000V fuses to ensure effective protection of PV inverters under overcurrent conditions. This product features UV resistance and dustproof characteristics, making it suitable for outdoor PV distribution cabinets and an economical and practical choice for PV system installers and operators.
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DC250V 400A 1P Molded Case Circuit Breaker
The DC250V 400A 1P molded case circuit breaker is a single-pole DC molded case circuit breaker launched by GreenWatt, a supplier under Zhejiang Dong'an Electric. It focuses on providing overcurrent and short-circuit protection for DC250V systems and is suitable for high-power DC applications such as photovoltaics, energy storage, and DC charging piles. Backed by nearly 30 years of experience in electrical manufacturing, we provide reliable assurance for the safe operation of users' DC systems through stable product performance and compliance certifications.
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DC1500V 400A Molded Case Circuit Breaker
The DC1500V 400A molded case circuit breaker is a high-voltage protection product developed for DC-side applications in energy storage systems. As a professional DC MCCB manufacturer, GreenWatt provides energy storage safety protection solutions centered around the DC1500V 400A molded case circuit breaker, covering residential, commercial, and grid-side energy storage projects. The product has a rated voltage of DC1500V and a rated current of 400A, supports a 2-pole design, and can accurately address overload and short-circuit risks generated during the charging and discharging of energy storage systems, helping system integrators and project owners achieve a balance between safety and cost.
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DC1500V 500A Molded Case Circuit Breaker
GREENWATT, a professional DC1500V MCCB manufacturer, provides a reliable DC1500V 500A molded case circuit breaker for commercial DC systems (such as commercial energy storage or DC lighting grids). This DC MCCB has a compact design to save space(2 poles) in electrical cabinets and a user-friendly switch for easy operation. It protects commercial DC equipment from damage caused by electrical issues. Get in touch with GREENWATT to purchase this DC MCCB or ask for technical support.
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DC1000V 320A Molded Case Circuit Breaker
GREENWATT’s DC1000V Molded Case Circuit Breaker is now available for purchase. As a professional DC MCCB manufacturer, GREENWATT makes this breaker for industrial DC applications, like DC power distribution lines. DC1000V 320A molded case circuit breaker has a high breaking capacity to handle sudden short-circuit currents safely(20KA). It also has clear indicators to show its on/off status. If your industrial setup needs a strong DC1000V MCCB, contact GREENWATT to buy or inquire about pricing.
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Buy DC Circuit Protection made in China from our factory. As one of the China DC Circuit Protection manufacturer and supplier, we can provide customers with stable and high-quality products.
