400A Mould Case Circuit Breaker

As a professional China factory supplier, XENHO 400A MCCB has short-circuit instantaneous, overload long-delay and under-voltage protection, fully covering circuit safety risks and preventing equipment damage and fire.

What is a 400A Mould Case Circuit Breaker?

The XENHO factory’s 400A Molded Case Circuit Breaker is a device rated at 400 amperes, specifically engineered to provide highly reliable protection for DC circuits. It features rapid response capabilities against both short-circuit and overload faults. Its modular design facilitates flexible installation and maintenance, while its robust construction ensures stable performance even in environments characterized by high temperatures, high humidity, and severe vibration. Compliant with the international standards of IEC 60947-2, this circuit breaker serves as a core component in modern power systems, enabling safe electrical isolation and precise control.

Protection Measures

The 400A Mould Case Circuit Breaker features multiple protection measures, including—but not limited to—instantaneous short-circuit protection, long-delay overload protection, and undervoltage protection.

Instantaneous short-circuit protection rapidly interrupts the current flow in the event of a short circuit, thereby preventing equipment damage and averting fire hazards.

Long-delay overload protection interrupts the circuit within a specified timeframe—adjusted according to the severity of the current overload—to safeguard equipment and wiring against damage caused by prolonged overloads.

The undervoltage protection function automatically interrupts the circuit when the voltage drops below a preset threshold, preventing equipment damage that could result from operation under low-voltage conditions.

Together, these protection measures constitute a comprehensive safety system for the product, ensuring the safe and stable operation of the electrical circuit.

Customization / Manufacturing Process

Regarding customization, XENHO offers personalized tailoring of its 400A Mould Case Circuit Breakers to meet specific client requirements—such as varying rated currents, tripping characteristic curves, and auxiliary contact configurations. Whether the application involves specialized DC power distribution systems within the new energy sector, or rail transit environments with stringent demands on circuit breaker dimensions and performance, we provide product solutions that are precisely matched to the need.

In terms of the manufacturing process, the journey begins with the rigorous selection of raw materials; we utilize high-strength, heat-resistant materials with exceptional insulating properties to ensure the product's fundamental performance integrity.

During the production and processing stages, we employ advanced compression molding techniques to guarantee the precision and structural strength of the breaker's housing. The intricate tripping mechanism is realized through high-precision machining and assembly processes, ensuring the accuracy and reliability of its operation. Every step of the production cycle undergoes rigorous quality control—from the inspection of individual components to the comprehensive testing of the finished product. These tests include assessments of short-circuit breaking capacity, overload protection performance, and insulation integrity; only products that successfully pass all such evaluations are permitted to advance to the next stage. Finally, following meticulous packaging and final factory inspections, our high-quality 400A Mould Case Circuit Breakers are delivered directly into the hands of our customers.

Product Specifications

Loading and Shipping:

We utilize professional packaging materials and secure loading methods to ensure that the 400A Molded Case Circuit Breaker remains undamaged during transit. Furthermore, having established long-term partnerships with numerous renowned logistics companies, we are able to select the most suitable shipping channel for your delivery based on your specific requirements and location. Additionally, we provide detailed logistics tracking services, allowing you to monitor the real-time shipping status of your product at any time.

Contact us

For any inquiries about our products, please feel free to contact us through the following methods:

WhatsApp / WeChat: 86-13123865875 86-15858812131

Email: 799199031@qq.com