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Air Circuit Breaker (ACB) is an electrical switching device used to protect electrical circuits from overloads, short circuits, and other faults. It is commonly used in low-voltage electrical systems, typically in industrial and commercial applications.
Here are some key features and characteristics of air circuit breakers:
Protection: ACBs provide protection against over currents, short circuits, and earth faults. They automatically detect and interrupt excessive current flow to prevent damage to the electrical system and connected equipment.
Tripping Mechanism: ACBs have a tripping mechanism that operates when the current exceeds a predetermined threshold. The tripping mechanism can be thermal, magnetic, or a combination of both.
Breaking Capacity: ACBs are designed to handle different levels of current interruption. The breaking capacity refers to the maximum current that an ACB can safely interrupt without causing damage.
Adjustable Settings: ACBs often have adjustable settings to accommodate different current levels and time delays. These settings can be customized to meet specific requirements and ensure proper protection.
Manual and Automatic Operation: ACBs can be manually operated for routine maintenance and testing purposes. They also incorporate automatic functions that detect faults and trigger the tripping mechanism when necessary.
Arc Interruption: ACBs are designed to extinguish the electric arc that forms during the interruption of current. This helps prevent damage to the contacts and ensures a safe and reliable operation.
Air circuit breakers are commonly used in electrical distribution systems to protect transformers, motors, generators, and other electrical equipment. They provide an essential safety feature by promptly disconnecting the power supply in case of faults, thereby preventing potential hazards and damage.
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