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The MTW1 series intelligent air circuit breaker is engineered for AC 50Hz distribution networks, handling rated voltages of 400V and 690V with a broad current range from 400A to 7500A. It efficiently manages electrical energy while offering comprehensive protection against overload, under-voltage, short circuit, and single-phase earth faults. Equipped with intelligent protection features and precise selective protection, it enhances power supply reliability and reduces unnecessary disruptions.
This breaker can withstand an impulse voltage of 8000V at altitudes up to 2000 meters, with modifications available for higher altitudes up to 12000V. It adheres to GB14048.2 and IEC60947-2 standards for low-voltage switchgear and control equipment.
Available in both drawer and fixed styles, the MTW1 series includes models such as MTW1-2000, MTW1-3200, MTW1-4000, MTW1-6300, and MTW1-7500. The pole options are 3P (3 Pole) and 4P (4 Pole), catering to various electrical system requirements.
The control part features advanced components including shunt release, under-voltage release, intelligent electronic release, and motorized operating mechanism, all designed for seamless integration and reliable performance. Voltage ratings for these components include AC 220V, 380V, and DC 110V, 220V, ensuring compatibility with diverse power systems.
Key internal components include high-conductivity copper bars with silver plating for excellent heat dissipation and corrosion resistance. The moving contact is crafted from copper with silver dots to ensure superior conductivity. The arc extinguishing section utilizes a cutting-edge interrupter for efficient operation.
Installation options include fixed type, ideal for stable setups with infrequent maintenance, and drawer type, which allows for easy testing and replacement. Plug-in type installation is also available for quick component swaps, connecting directly to the busbar.
Secondary wiring methods involve precise connections for intelligent controllers, undervoltage coils, shunt coils, closed coils, and energy-storing motors, all detailed for optimal functionality.
Product testing encompasses mechanical operation checks, insulation resistance tests, power frequency withstand voltage tests, contact resistance measurements, and protection function evaluations to ensure reliability and compliance with standards.
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