In the modern era of electricity and electronics, the role of circuit breakers cannot be overstated. Among these, the Air Circuit Breaker (ACB) stands out as a crucial component, ensuring the smooth and safe operation of electrical systems. This article delves into the working principles, applications, and advantages of the ACB breaker.
Working Principles of ACB Breaker
The ACB breaker, also known as the air circuit breaker, is an electrical switch that can interrupt the current flow in a circuit when a fault occurs. It operates using the principle of magnetic attraction. When a fault current flows through the breaker, it generates a strong magnetic field that attracts an armature. This action trips the mechanism, causing the contacts to separate, interrupting the current flow. The ACB breaker is equipped with a thermal-magnetic trip unit. This unit combines both thermal and magnetic sensing elements to detect both overload and short-circuit conditions. The thermal element senses the heating effect of the current, while the magnetic element senses the sudden increase in current due to a short circuit. Both sensing elements work together to trip the breaker in case of a fault.
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