Here is an introduction to the CDW3 - 4000H ACB Air Circuit Breaker:
General Information
The CDW3 - 4000H is a high - performance air - circuit breaker in the CDW3 series. It is designed to handle high - current applications in power distribution systems, providing reliable protection and control.
Technical Specifications
Rated Current: It has a rated current of 4000A, which allows it to handle significant electrical loads.
Rated Voltage: The breaker is suitable for AC voltages of 415V/690V, making it applicable in various power supply scenarios.
Rated Frequency: It operates at 50Hz/60Hz, matching the frequency of most common electrical grids.
Breaking Capacity: With a high breaking capacity, it can safely interrupt short - circuit currents, ensuring the safety of the electrical system during fault conditions.
Construction and Design
Durable Housing: The breaker is encased in a robust and flame - retardant housing, offering excellent insulation and protection against environmental factors. This ensures its reliable operation in different working conditions.
High - Quality Contact System: It features a sophisticated contact system that provides low - resistance connections. This helps to reduce heat generation during operation, enhancing the breaker's efficiency and lifespan.
Compact and Modular Design: Despite its high - current - handling capacity, the CDW3 - 4000H has a relatively compact design. Its modular construction allows for easy installation, maintenance, and replacement of components.
Protection Functions
Overload Protection: The breaker is equipped with an overload protection mechanism that monitors the current. When the current exceeds the rated value for a specific period, it will trip to prevent damage to the connected equipment.
Short - Circuit Protection: In the event of a short - circuit, the CDW3 - 4000H can quickly detect the fault and interrupt the current within a short time, minimizing the impact on the electrical system.
Undervoltage Protection: It also provides undervoltage protection. If the voltage drops below a certain level, the breaker will trip to safeguard the connected devices from operating under abnormal voltage conditions.
