
Siemens 7ND4421-1AA01-1AA1
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The Siemens SIREC D300 display recorder is a reliable and versatile solution for precise measurement data acquisition in industrial and energy applications. Designed for professional use, this display recorder combines robust hardware with flexible connectivity, making it suitable for a wide range of monitoring and recording tasks.
With a front dimension of 144 x 144 mm, the SIREC D300 is easy to integrate into control panels and switchgear. It supports eight analog inputs for mA, V and mV signals, with a fast scanning rate of 100 ms, ensuring accurate and responsive measurement recording. The device operates on AC 50/60 Hz with a wide power supply range of 90 to 240 V.
For seamless system integration, the recorder is equipped with Ethernet, RS485 and USB interfaces on the rear side, while the front side provides a CF card slot and USB interface for data handling and configuration. The IP54-rated front ensures protection against dust and splashing water, making it suitable for demanding industrial environments.
As a Siemens phase-out product, the SIREC D300 remains a proven choice for existing installations and replacement needs. It offers dependable performance, Siemens build quality, and compatibility with established systems, making it a practical investment for maintenance and system continuity.