Time delay relays are specialized devices designed to provide timing functions for precise control in electrical systems. These relays enable the timed closure or disconnection of circuits in various electrical equipment, enhancing efficiency and operational reliability. By integrating a timing function with a general electromagnetic relay, they ensure seamless performance in both DC and AC operations.

Primarily used as auxiliary relays in protection and automatic control circuits, time delay relays help increase the number of contacts and improve contact capacity. With adjustable delay times, these relays offer flexibility to meet diverse application requirements in industrial and commercial environments.