töréskapacitás

Töréskapacitás refers to the maximum amount of electric current that a fuse or circuit breaker can interrupt under specific fault conditions without sustaining damage. This rating is crucial for ensuring the safety and reliability of electrical systems. It is typically expressed in amperes (A) and represents the fault current level the protective device is designed to safely break.

When a fault occurs, such as a short circuit, a very high current flows through the circuit. If this current exceeds the breaking capacity of the protective device, the device may fail to interrupt the current, potentially leading to arcing, fire, or damage to connected equipment. Therefore, it is essential to select fuses and circuit breakers with a breaking capacity that is greater than the maximum prospective fault current at the point of installation.

The breaking capacity is determined by standardized testing procedures and considers factors like the voltage of the system and the time it takes for the device to operate. Manufacturers provide this information on their products. Understanding and correctly applying the breaking capacity of overcurrent protective devices is a fundamental aspect of electrical design and safety engineering. It ensures that the protective device will perform its intended function and prevent catastrophic failures in the event of a fault.