DC250V 400A 1P Molded Case Circuit Breaker

The GreenWatt DC250V 400A 1P molded case circuit breaker features a mature molded case structure and a dedicated DC arc-extinguishing system, enabling it to stably carry 400A of current under rated operating conditions and quickly respond to overload and short-circuit faults. Balancing durability and ease of installation, the product is suitable for medium-to-high power DC power distribution scenarios, meeting the protection needs of new energy, transportation, and industrial sectors.

GreenWatt's factory optimized the structure during the design phase based on the characteristics of DC systems, ensuring the GreenWatt DC250V 400A 1P molded case circuit breaker remains stable during long-term energized operation, reducing the risk of system failure.

Advantages

1.DC Dedicated Arc Extinguishing System

Utilizes multi-layered arc-extinguishing grids and a sealed arc-extinguishing structure to quickly extinguish DC arcs. It is compatible with the characteristics of DC systems without natural zero-crossing points, improving breaking reliability.

2.Stable Current Carrying and Heat Dissipation

Optimized conductor cross-sectional area and internal layout reduce temperature rise, ensuring long-term stable operation under a 400A rated current, suitable for high-load continuous operation scenarios.

3.Reliable Protection Action

Thermomagnetic trip unit accurately responds to overload and short-circuit signals, with stable action time, avoiding false trips and failures to trip, protecting downstream equipment and lines.

4.Flame-Retardant Insulating Housing

Made of flame-retardant thermosetting materials, the housing has high mechanical strength, temperature resistance, and aging resistance, maintaining structural integrity and insulation performance in harsh industrial environments.

Parameter table

Applicable Scenarios

The GreenWatt DC250V 400A 1P molded case circuit breaker is designed for medium to high power DC systems. Main application scenarios include:

New Energy Sector: Photovoltaic power station combiner boxes, energy storage battery cabinets, and DC side protection for energy storage converters

Electric Vehicle Infrastructure: Internal power distribution for DC charging piles and protection of charging module circuits

Transportation and Industry: DC power distribution for rail transit, DC power supply for ships, and DC equipment protection in the electrochemical industry

Other DC Scenarios: Industrial DC power supplies, DC power distribution for communication base stations, and protection for high-power DC equipment

Why Choose Our Products

1. Brand and Factory Strength

GreenWatt is a subsidiary of Zhejiang Dong'an Electric. The company has been deeply involved in the electrical field for nearly 30 years, integrating R&D, production, sales, and service. It possesses modern production lines and professional testing equipment, and has the capability for continuous technological innovation and mass production delivery.

2. Comprehensive Certification System

Our products are CE, CB, TUV, and CCC certified. Our factory is ISO9001, ISO14001, and ISO45001 certified, and all products meet RoHS 2.0 testing requirements, complying with domestic and international market access requirements.

3. Mature Production and Testing

Equipped with professional equipment such as short-circuit testers, overload testers, and medium-speed punch presses, we have established an automated testing line. Every GreenWatt DC250V 400A 1P molded case circuit breaker undergoes full-process testing to ensure consistency before leaving the factory.

4. Customization and Service Capabilities

We can provide customized production based on customer drawings and samples. We fully communicate requirements in the early stages, provide samples after confirmation, and then proceed with mass production after sample confirmation, balancing product compatibility and delivery efficiency.

5. Stable Cost-Effectiveness

We control costs through large-scale production, maintaining competitive pricing while ensuring high-quality raw materials and processes, providing users with a long-term stable user experience.