What action does Pickup Voltage refer to in a relay?

Pickup Voltage refers to the specific voltage level that must be applied to the coil of a relay in order to initiate its operation and cause the relay to switch or click into its active state. When the coil receives a voltage that meets or exceeds the pickup voltage, it generates a magnetic field strong enough to close or open the contacts of the relay, thereby completing or interrupting the circuit it controls.

Understanding this concept is crucial for applications where relays are used, such as in control systems and automation, to ensure that the relay functions correctly at the appropriate voltage levels. The other options describe different characteristics related to relays but do not accurately capture what the pickup voltage specifically refers to in this context.