The Pilz PNOZ X3.1 230VAC 24VDC 3N/O 1N/C 1SO Safety Relay (Part Number: 774321) is a robust protection relay engineered for critical safety applications in industrial automation. Designed as part of Pilz’s trusted PNOZ X relay series, it delivers a combination of reliability, versatility, and compliance with safety regulations, making it a preferred choice for machine builders and operators worldwide.

This unit is characterised by its dual supply configuration, with the ability to operate on both a 230 V AC primary supply (U1) and a 24 V DC auxiliary supply (U2). This design allows the relay to adapt to a wide range of system architectures, making it suitable for retrofits, new installations, or hybrid systems where both AC and DC power sources are required.

The PNOZ X3.1 provides a comprehensive set of contacts, including 3 normally open (N/O) safety contacts, 1 normally closed (N/C) contact, and 1 signalling output (SO). This configuration ensures reliable monitoring of safety circuits and clear feedback to control systems, allowing operators and engineers to maintain visibility over system status. The multiple safety outputs enable direct actuation of contactors or other safety-critical devices, ensuring safe stop and emergency-stop functions are performed with absolute reliability.

Energy efficiency is another strong point. With a power consumption of only 5 VA on the AC supply, the PNOZ X3.1 supports sustainable system design by reducing operational costs without compromising safety performance. Combined with its robust internal design, the relay ensures long service life and minimal maintenance requirements, contributing to high overall equipment effectiveness (OEE).

Built for demanding environments, the PNOZ X3.1 safety relay is widely used in industries such as manufacturing, packaging, material handling, and process engineering. Typical applications include emergency stop circuits, safety gate monitoring, and two-hand control systems. Its proven performance and compliance with international safety standards mean that machine operators can rely on it to reduce risk and ensure personnel protection.

In addition to its technical strengths, the PNOZ X3.1 embodies the Pilz philosophy of simple integration and user-focused design. Its straightforward wiring and modular form factor simplify installation, while its durable construction ensures stable operation even under challenging industrial conditions.

In summary, the Pilz PNOZ X3.1 Safety Relay (774321) is an indispensable component for any safety-critical automation system. With dual supply flexibility, a robust set of safety contacts, energy-efficient operation, and the hallmark reliability of Pilz technology, it provides both peace of mind and practical efficiency in safeguarding machines and personnel.