Symbol II in a specific diagram represents a switch with what kind of contacts?

The symbol for a switch in a diagram can indicate the nature of its contacts, which is crucial for understanding how the circuit operates. A maintained contact means that the switch stays in its last position until it is manually changed again. This is typically the case in toggle switches, where the user sets the switch to either the "on" or "off" position, and it remains in that position until intentionally moved.

In the context of this question, identifying the symbol as representing a maintained switch suggests that the circuit can be controlled in a stable state without needing constant pressure or action from the user. This characteristic is particularly useful in situations where the switch's position should remain constant, such as controlling power to a light fixture or an appliance until it’s purposefully turned off or on.

This understanding is essential for correctly interpreting circuit diagrams and ensuring that the design and operation of electrical systems align with the intended functionality.