Legrand 004744 Time Delay Relay 1P 8A 0.1s-100h 12-230V AC/DC

The Legrand 004744 is a high-precision time delay relay engineered for versatile control within electrical installations. This compact device, occupying only one module, provides reliable switching performance for a wide array of automation tasks. With its broad compatibility for power supplies ranging from 12V to 230V AC/DC and an extensive timing range from 0.1 seconds to 100 hours, it serves as a flexible solution for both industrial and residential electrical systems.

Advantages

This relay stands out due to its multi-functional capabilities, offering various timing modes including ON delay, OFF delay, pulse generation, and flashing functions. Its universal voltage input simplifies inventory management and installation, as it adapts to diverse power environments without requiring multiple device types. The robust design ensures consistent operation, while the compact single-module footprint allows for efficient use of space within distribution boards.

Suitable for

• Industrial automation and process control systems
• Residential lighting control and staircase timers
• Ventilation and HVAC system management
• Sequential switching in electrical circuits
• Pulse generation for signaling or monitoring equipment

When it may not be suitable

This device is not intended for high-power applications exceeding its 8A current rating. It should not be used in environments where the ambient conditions exceed the manufacturer's specified temperature or humidity limits, as this may affect the timing accuracy and longevity of the internal components.

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: DIN rail (1 module width)
• Weight: 85 g

How to use

The relay is designed for standard DIN rail mounting within an electrical enclosure. Wiring should be performed by a qualified professional in accordance with local electrical codes. Once mounted, the desired timing function and duration are selected using the integrated controls on the front panel. Ensure the supply voltage is within the specified range before energizing the circuit. The device will then execute the programmed switching logic based on the input signal or power-up state.

What to consider before purchase

• Verify that the 8A load capacity is sufficient for your specific application.
• Ensure the DIN rail space is available for a 1-module device.
• Confirm that the required timing functions are supported by the device modes.
• Check that the control signal voltage matches the relay input requirements.

Usage recommendations

For optimal performance and safety, ensure that the relay is installed in a clean, dry environment protected from excessive dust and moisture. Periodically inspect the terminal connections to ensure they remain tight and free from oxidation, especially in industrial settings with high vibration.