The Pilz S1MN 24VAC/DC 2C/O (840400) is a compact and reliable monitoring relay designed to supervise key operating parameters in industrial automation and safety systems. Part of Pilz’s extensive portfolio of monitoring devices, it combines robust functionality with low power consumption, making it a dependable choice for engineers seeking reliable protection in machine and process control environments.

One of the defining advantages of the S1MN is its dual supply compatibility. Operating on a 24 V AC or DC supply, the device can be used flexibly across different power configurations, eliminating the need to stock separate models for different installations. This versatility ensures easy integration into a wide range of existing control infrastructures.

Efficiency is another strong point. With a power consumption of just 3.5 VA in AC mode and 2 W in DC mode, the relay contributes to energy-efficient system performance. Its low demand helps reduce operating costs while supporting sustainable energy practices in automation environments where multiple monitoring devices may be installed.

The relay is equipped with two changeover (C/O) contacts, providing flexible switching capabilities for safety-related and monitoring applications. These outputs allow the device to be integrated into diverse circuits, handling tasks such as voltage monitoring, load supervision, or system fault signalling. The changeover design also adds versatility, enabling use in both normally open and normally closed configurations depending on system requirements.

Built to Pilz’s rigorous quality standards, the S1MN 24VAC/DC 2C/O is designed for long service life in demanding industrial conditions. Its robust construction ensures stable performance under electrical load variations, vibration, and other stresses common to factory and process environments. This reliability reduces unplanned downtime and maintenance needs, ensuring consistent protection for equipment and operators alike.

Applications for the S1MN 24VAC/DC 2C/O span across industries such as manufacturing, packaging, energy, logistics, and machine building, where dependable voltage monitoring and system supervision are essential. Its ability to work seamlessly with other Pilz safety and monitoring components makes it particularly valuable in larger safety architectures, ensuring compliance with international standards and delivering peace of mind to operators.

In summary, the Pilz S1MN 24VAC/DC 2C/O (840400) combines dual-voltage flexibility, energy efficiency, reliable switching, and durable construction into a compact monitoring relay. It is an ideal choice for engineers seeking a versatile, efficient, and standards-compliant device that enhances both safety and operational continuity in industrial automation systems.