What happens when the Traction Control unit MCB is tripped?

When the Traction Control unit MCB is tripped, one of the immediate indicator responses is the activation of the maintenance fault light. This is critical because the activation serves as a warning to operators and maintenance personnel that there is an issue that needs attention. The maintained fault light alerts the crew to the possibility of system malfunctions or failures in the traction control unit, prompting them to carry out checks and necessary repairs to ensure safe operation.

This response is essential for safety, as it informs those operating the train that there is a potential problem that could affect performance. Addressing indicated faults promptly helps maintain efficient and safe transit operations, as well as ensuring that any underlying issues can be diagnosed and resolved in a timely manner.

Other responses may either not directly relate to the function of the MCB or could imply procedures or actions that are not immediate consequences of the tripping. Understanding this context is crucial in managing the systems effectively within a train operation scenario.