Littelfuse Time Delay Relays 2

Time delay relays are electrical switches that are designed to introduce a time delay before opening or closing a circuit. These relays are used in various applications that require the introduction of a time delay, such as motor control, lighting control, and HVAC systems. Time delay relays are commonly used to prevent equipment damage, improve system efficiency, and increase safety.

There are two types of time delay relays: on-delay and off-delay relays. On-delay relays are designed to introduce a time delay before closing a circuit, while off-delay relays introduce a time delay before opening a circuit. On-delay relays are commonly used in applications where equipment needs to be turned on after a specified time delay, while off-delay relays are commonly used in applications where equipment needs to be turned off after a specified time delay.

Time delay relays can be electromechanical or solid-state devices. Electromechanical time delay relays use a mechanical timing mechanism to introduce the time delay, while solid-state time delay relays use electronic components such as capacitors and resistors to introduce the time delay. Solid-state time delay relays are more accurate and reliable than electromechanical time delay relays and are commonly used in applications that require precise timing.