A Time Delay Relay is an electromechanical or solid-state device designed to provide a delay in switching operations. Unlike standard relays that react immediately to an input signal, a TDR introduces a delay between the signal change and the relay's response. This delay is adjustable, allowing engineers to customize it based on the requirements of the system. Time Delay Relays are commonly used in industrial automation, machinery protection, and various time-dependent control applications.

    How Does a Time Delay Relay Work?

    The primary function of a TDR is to control the timing of a relay's action in response to a stimulus. It consists of several key components： a relay coil, a timing circuit, and contacts for opening or closing an external electrical circuit. When the input signal is received, the timing circuit begins counting, either in an "on-delay" or "off-delay" mode, depending on the configuration.