How is the hydraulic fluid controlled when a leak occurs?

In hydraulic systems, the hydraulic fuse plays a critical role in managing leaks and maintaining system integrity. When a leak is detected, the hydraulic fuse automatically restricts the flow of hydraulic fluid to prevent a significant loss of pressure. This mechanism acts quickly to isolate the affected section of the system, ensuring that the remaining components can still operate effectively, or at least maintain some level of control.

The hydraulic check valve, while important for directing fluid flow in one direction and preventing backflow, does not specifically address the issue of leaks. It is not designed to detect or manage loss of pressure due to leaks.

The main battery is unrelated to hydraulic fluid control; its role is primarily in providing electrical power to various systems.

The isolation switch can shut down electrical systems or components but does not manage hydraulic fluid directly. Its function is more geared toward safety procedures rather than fluid control during a leak.

Thus, the hydraulic fuse is the most effective component for controlling hydraulic fluid in the event of a leak, making it the correct answer.