PRD-3AY0-24

PRD-3AY0-24 Application Field and Working Principle

The PRD-3AY0-24 is an off delay time relay used in field applications of industrial automation. It is used for remote control, timing control, interlocking control, and motor starting; and can also be used to control other AC devices like electric heaters, lamps, alarms, and fans.

The PRD-3AY0-24 is a single-phase, 6-pin, time-delay relay. It is rated for 120 to 240 volts AC at a maximum current of 20 amps. The adjustable time range for the relay is 0.1 to 9.9 seconds, and it has a maximum number of contacts per pole of 2. The relay is designed for continuous duty and is housed in a UL 94V-0 flame retardant plastic case.

Structure:

The PRD-3AY0-24 relay is composed of a magnetic actuator, a coil, and a contact block. The coil is sealed in a plastic case and is powered by an AC voltage supplied by the end user. The contact block is connected to the coil by a spring. The contact block contains two normally open and two normally closed contacts which are used to control the circuit the relay is connected to.

Working:

When the AC voltage is applied to the relay, the coil generates an electromagnetic field which attracts the contact block. This causes the contacts to close, thus providing the circuit with power. When the power is removed, the contact block is released and the contacts open, thus removing the power from the circuit.

The contacts of the relay remain closed for the specified adjustable time delay period, after which, the contacts will open due to the release of the contact block. The adjustable time range for the relay is 0.1 to 9.9 seconds. This allows for precise and accurate timing control of the circuit.

Advantages:

The PRD-3AY0-24 time-delay relay offers several advantages. First, its adjustable time range of 0.1 to 9.9 seconds allows for precise and accurate timing control of the circuit. Second, its 20 amp rating makes it suitable for a wide range of applications. Finally, its UL 94V-0 flame retardant plastic case ensures safety and reliability.

Conclusion:

The PRD-3AY0-24 time-delay relay is a versatile and reliable device for industrial automation applications. Its adjustable time range, 20 amp rating, and UL 94V-0 flame retardant plastic case make it a great choice for applications in industrial automation, as well as for remote control, timing control, interlocking control, and motor starting.