The MTW1 series smart circuit breaker is designed for AC distribution networks operating at 50Hz, with rated voltages of 400V and 690V, and a rated current range from 400A to 7500A. It serves to distribute electrical power and protect circuits and connected equipment from faults such as overload, undervoltage, short circuit, and single-phase ground faults. Equipped with intelligent protection and precise selective tripping capabilities, this breaker enhances power supply reliability and helps prevent unplanned outages. At an altitude of 2000 meters, its impulse withstand voltage is rated at 8000V (adjustable according to altitude-based standards, with a maximum not exceeding 12000V).

This product meets the requirements of both GB14048.2 "Low-voltage switchgear and controlgear – Low-voltage circuit breakers" and IEC 60947-2 "Low-voltage switchgear and controlgear – Part 2: Circuit-breakers."

• High-Purity Red Copper Core: Utilizing premium-grade red copper for optimal electrical conductivity and reliable performance.
• Precision Silver Plating: A meticulously applied silver finish enhances both durability and conductivity, while providing a refined aesthetic.
• Advanced Thermal Regulation: Engineered with efficient heat management and dissipation to maintain stable operation under high-demand conditions.
• Superior Corrosion Resistance: Treated with a protective coating that ensures long-term reliability even in challenging environments.
• Reinforced Bar Design: Featuring widened and thickened copper bar dimensions for improved current capacity and mechanical strength.
• Compliance & Performance: Fully meets and exceeds industry standards, delivering consistent high performance and safety.

Choose a construction type that fits your needs, offering both fixed and drawer configurations for flexibility.

• Draw-out air circuit breaker, 2000A to 3200A frame configurations
• Low-voltage power circuit breaker, drawout design options
• The primary function of an air circuit breaker (ACB) is to act as a reliable switch and protection device for the main power distribution system. It protects circuits and equipment from damage caused by overcurrent and short-circuit faults.

Secondary Wiring Method:

• 1 and 2: Interface the intelligent controller
• 27 and 28: Link the undervoltage coil
• 29 and 30: Integrate the shunt coil
• 31 and 32: Engage closed coils
• 34 and 35: Connect the energy-storing motor

• Scrutinize the mechanical operation of the circuit breaker to ensure it is flexible and reliable.
• Test the seamless operation functions such as closing, opening, and the precision of energy storage.

• Conduct an insulation resistance test: Employ a megohmmeter to measure the insulation resistance of both main and auxiliary circuits, guaranteeing they surpass standard requirements (typically ≥ 1M Ω).
• Power Frequency Withstand Voltage Test: Administer rated power frequency voltage (e.g., 2500V/1min) to both the main and auxiliary circuits, assessing the robustness of insulation performance.
• Contact Resistance Test: Meticulously gauge the contact resistance of the primary contact to confirm it is beneath the established threshold (commonly at a micro ohm level).
• Protection Function Test Mastery: Evaluate the action values and timing of protection functions such as overload, short circuit, and ground fault. Assure the calibration and operability of the intelligent release device.

Outer packaging: Strong wooden boxes are usually used to provide sufficient mechanical strength. Wooden crates are suitable for large circuit breakers or international transportation.
Inner packaging: Wrap the circuit breaker with buffer materials such as foam pads, bubble film, or pearl cotton to prevent vibration and collision. For large circuit breakers, the packaging box may adopt a layered design, with accessories (such as manuals, tools, spare parts) placed on the upper layer.

• Domestic transportation: If there is a designated freight forwarder in China, we will transport the products to the designated location through road transportation or domestic express delivery after production is completed.
• International transport: When the quantity of goods is small and time is tight, the three major international express delivery companies (DHL, FEDEX, UPS) are selected for rapid transportation.
• Sea freight/air freight: When there is a large quantity of goods and time is not urgent, we choose sea freight. We will coordinate with suitable freight companies to deliver containers to customer-designated ports.