The Pilz S1UM 230-240VAC UM 0.1-500VAC/DC (827260) is a precision-engineered voltage monitoring relay designed for industrial automation systems requiring dependable detection of voltage deviations. It provides reliable protection against over- and under-voltage conditions, helping ensure the stability and safety of machines, equipment, and control circuits.

With its wide monitoring range of 0.1 to 500 V AC/DC, the relay is highly versatile, making it suitable for monitoring both AC and DC circuits across different voltage levels. This flexibility allows it to be used in a variety of applications, from monitoring supply lines and auxiliary circuits to protecting sensitive equipment from potentially damaging electrical fluctuations.

The relay operates with a supply voltage of 230–240 V AC, which aligns with standard industrial mains power, ensuring compatibility and straightforward integration into existing systems. Its low power consumption of only 2 VA ensures energy-efficient operation while minimising additional thermal load within the control panel. This supports more sustainable operations and reduces the strain on other system components.

The S1UM 827260 is engineered to meet EN 60947-4-1 standards, making it fully compliant with utilisation category AC/DC1 for industrial switching devices. This compliance guarantees that the relay provides consistent performance under normal load conditions and meets international expectations for reliability, durability, and operator safety.

Built for robustness, the relay features a compact and durable housing that facilitates easy integration into a variety of control cabinets and panels. Its design makes it suitable for both new installations and retrofit projects, where maintaining uptime and reliability are essential. The simplicity of wiring and compatibility with standard conductor cross sections make commissioning straightforward, reducing installation time.

In practical use, the S1UM monitoring relay finds application in production lines, power distribution systems, machine tools, and safety-critical automation circuits, where constant voltage monitoring is required to prevent equipment malfunction or operator hazards. By disconnecting circuits when unsafe voltage levels are detected, the relay helps protect both people and machinery, reducing downtime and costly damage.

In summary, the Pilz S1UM 230-240VAC UM 0.1-500VAC/DC (827260) combines wide monitoring capability, compatibility with industrial supply systems, energy-efficient operation, and international standard compliance. It is an essential component for any automation environment that demands reliable and flexible voltage monitoring to ensure both equipment protection and operational safety.