DC Molded Case Circuit Breaker
Zhejiang Dongan Electrical Co., Ltd. DC molded case circuit breaker (DC MCCB) is a high-performance low-voltage electrical protection device designed for direct current circuits, providing reliable overload, short-circuit, and overvoltage protection for large-capacity DC systems. It is widely used in solar photovoltaic, battery energy storage, electric vehicle charging, data center, and industrial DC distribution, ensuring safe and stable operation of circuits and equipment.
Core Features
● Special DC Arc Extinguishing System: Adopts high-strength arc-chamber structure and permanent magnetic blowout technology to quickly extinguish DC arcs with no natural zero-crossing, solving the difficulty of DC arc interruption and ensuring safe circuit breaking.
● High Breaking Capacity: Equipped with breaking capacities up to 50kA, 60kA, or 100kA, capable of quickly cutting off high short-circuit currents and reducing equipment damage risks.
● Multiple Voltage & Current Grades: Covers rated voltages from DC24V to DC1500V and rated currents from 16A to 1600A, adapting to small, medium, and large-capacity DC systems.
● Dual Protection of Thermal & Magnetic Release: The thermal element responds to sustained overloads, and the magnetic element acts on high short-circuit currents, providing fast and reliable protection for DC circuits.
● Multiple Polarity & Pole Options: Available in 2P, 3P, 4P, and polar/non-polar designs to meet the needs of one-way and bidirectional DC circuits.
● Environmental Adaptability: Suitable for operating temperatures from -40℃ to +75℃, with stable performance in harsh industrial and outdoor environments.
Product Categories
1. By Rated Current
● Small Current DC MCCB: Rated current 16A–32A, suitable for small solar systems, low-power DC equipment, and small battery packs.
● Medium Current DC MCCB: Rated current 32A–630A, applicable to medium-sized energy storage systems, EV charging piles, and industrial DC distribution lines.
● High Current DC MCCB: Rated current 630A–1600A, designed for large-scale energy storage stations, high-power DC distribution, and industrial heavy-load equipment.
2. By Rated Voltage
● Low Voltage DC MCCB: Rated voltage DC24V–DC250V, for household and small commercial DC systems.
● Medium Voltage DC MCCB: Rated voltage DC250V–DC1000V, suitable for solar PV, battery energy storage, and general industrial DC distribution.
● High Voltage DC MCCB: Rated voltage DC1000V–DC1500V, ideal for large-scale renewable energy projects, high-voltage DC transmission, and advanced energy storage systems.
3. By Pole Number
● 2P DC MCCB: Suitable for unipolar DC circuits, widely used in small solar systems and small battery energy storage.
● 3P DC MCCB: Applied in three-phase DC circuits, such as medium-sized industrial DC distribution and EV charging systems.
● 4P DC MCCB: Used in four-wire DC circuits, meeting the needs of data centers, telecom base stations, and large-scale energy storage systems.
4. By Breaking Capacity
● Standard Breaking Capacity DC MCCB: Breaking capacity 25kA–50kA, for general industrial and commercial DC applications.
● High Breaking Capacity DC MCCB: Breaking capacity 60kA–100kA, designed for high short-circuit current scenarios such as large-scale energy storage and renewable energy power stations.
Application Scenarios
● Renewable Energy: Solar PV systems, wind power DC collection, and distributed energy storage projects.
● Energy Storage: Battery energy storage stations, household energy storage systems, and UPS power supplies.
● Transportation: EV charging piles, urban rail transit DC power supply, and electric vehicle auxiliary circuits.
● Data Centers & Telecom: 48V DC power distribution, server cabinets, and telecom base station backup power.
● Industrial & Household: Industrial DC equipment, household solar home systems, and low-voltage DC distribution lines.
Quality & Service
Zhejiang Dongan Electrical Co., Ltd. has over 30 years of experience in R&D and manufacturing, adhering to the quality policy of "science first, quality first". All DC MCCB products comply with IEC/EN 60947 standards, with CE, CB, TUV, and CCC certifications, and pass ROHS 2.0 testing. Equipped with advanced automatic test lines, short-current test machines, overload test machines, and medium-speed punch presses, we ensure stable product performance and reliable quality. We provide customized production according to customer drawings or samples, with strict sample confirmation and efficient delivery, achieving win-win cooperation with customers worldwide.
- View as
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.
Read MoreSend Inquiry
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.
Read MoreSend Inquiry
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.
Read MoreSend Inquiry
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.
Read MoreSend Inquiry
DC1000V 63A Molded Case Circuit Breaker
Greenwatt's newly developed DC1000V 63A molded case circuit breaker, This DC MCCB works well in several key places. It is ideal for industrial DC power distribution lines, where it protects the main DC circuits from overloads. It also fits medium-sized energy storage banks (like 50kWh to 200kWh systems) to guard battery clusters. Additionally, it can be used in small to medium PV (photovoltaic) system DC bus circuits, connecting PV arrays to inverters. For commercial DC grids, such as DC lighting systems in large malls, it also provides reliable protection.
Read MoreSend Inquiry
DC250V 250A 1P Molded Case Circuit Breaker
GREENWATT supplier’s DC250V 250A 1P molded case circuit breaker (MCCB) is built for low-voltage, high-current DC systems—like small energy storage batteries or solar DC power lines. It works with DC250V voltage and handles up to 250A current, protecting circuits from overloads and short circuits. Its 1P (single-pole) design saves space in compact electrical cabinets, and it’s easy to install. It also comes with GREENWATT’s 3-year warranty and custom service options, making it a reliable choice for users needing strong, space-efficient DC circuit protection.
Read MoreSend Inquiry
DC500V 125A Molded Case Circuit Breaker
For PV (photovoltaic) system owners needing a DC MCCB, GREENWATT’s product is a great choice. As a professional DC MCCB manufacturer, GREENWATT designs DC500V 125A molded case circuit breaker with enclosure to work with PV system DC voltages. It can handle the current from PV arrays and protects key PV components like inverters. It’s easy to install and works reliably in outdoor-related electrical cabinets. Contact GREENWATT today to buy this DC500V 125A molded case circuit breaker with enclosure or get more product details.
Read MoreSend Inquiry
DC500V 250A Molded Case Circuit Breaker
Greenwat is a leading manufacturer of DC electrical equipment, specializing in high-performance DC molded case circuit breaker (MCCB). This series of DC MCCBs is designed for industrial DC power distribution, large energy storage battery packs, and photovoltaic combiner systems, effectively protecting circuits from overload and short-circuit damage. With a rated voltage of 500V DC and a load capacity of up to 250A, this DC500V 250A molded case circuit breaker, with its high breaking capacity of 20KA, ensures operational safety and system stability in complex power environments.
Read MoreSend Inquiry
Buy DC Molded Case Circuit Breaker made in China from our factory. As one of the China DC Molded Case Circuit Breaker manufacturer and supplier, we can provide customers with stable and high-quality products.
