What is an incorrect claim about the maintenance of modern current-limiting fuses?

Extensive maintenance is typically not mandatory for modern current-limiting fuses, making this claim incorrect. Current-limiting fuses are designed to operate effectively with minimal maintenance due to their durable construction and reliable operation. The primary maintenance requirement involves performing visual inspections to ensure that the fuses are intact and not exhibiting any signs of damage, such as discoloration or physical deformities.

This is consistent with the expectations surrounding current-limiting fuses, as they are generally engineered to handle electrical faults without the need for complex servicing. Additionally, while external conditions may necessitate some level of inspection or maintenance for fuses, the extent of this maintenance is typically not extensive. Therefore, the claim that extensive maintenance is mandatory does not align with the operational practices associated with modern current-limiting fuses.