Legrand 004740 Time Delay Relay 1P 8A 0.1s-100h 12-230V AC/DC

The Legrand 004740 time delay relay is a high-precision electrical component designed to manage delayed switching operations in both residential and industrial environments. This versatile device allows for the controlled activation of loads, such as lighting systems, alarms, or contactors, by introducing a specific time delay after the relay is powered on. With its compact single-module design, it integrates seamlessly into standard electrical distribution boards, providing a reliable solution for automation and timing control.

Advantages

This relay stands out due to its exceptional flexibility, offering a wide timing range that spans from 0.1 seconds up to 100 hours. Its universal power supply compatibility, ranging from 12V to 230V AC/DC, makes it suitable for a vast array of electrical installations without the need for multiple specialized units. The device is engineered for durability and consistent performance, ensuring that timing sequences are executed accurately every time the circuit is energized.

Suitable for

• Delayed activation of lighting circuits
• Triggering alarm systems after a set interval
• Controlling contactors in industrial automation
• Managing time-sensitive electrical processes

When it may not be suitable

This relay is not intended for high-power applications exceeding its 8A contact rating. It is also not suitable for environments requiring complex multi-stage logic programming, as it is designed specifically for standard time-delay switching functions.

Key specifications

• Contact configuration: 1P (Single Pole)
• Maximum current rating: 8A
• Timing range: 0.1 seconds to 100 hours
• Supply voltage: 12-230V AC/DC
• Mounting: 1 module width
• Weight: 87 g

How to use

The relay is designed for installation on a standard DIN rail within an electrical distribution board. Once mounted, connect the power supply and the load according to the wiring diagram provided with the device. Use the integrated controls to set the desired time delay period. Once the relay receives power, the timing cycle begins immediately. Upon completion of the set time, the internal contact will switch, activating the connected load.

What to consider before purchase

• Ensure the load current does not exceed 8A.
• Verify that the installation space accommodates a 1-module width device.
• Confirm the timing requirements of your application fall within the 0.1s to 100h range.

Usage recommendations: Always ensure the power is disconnected before performing any wiring or adjustments to the relay to maintain safety and prevent equipment damage.