The Pilz PNOZ X4 24VDC 3N/O 1N/C (774730) is a robust and versatile safety relay from the trusted PNOZ X family, engineered to deliver dependable monitoring of safety functions in industrial automation. Designed for simplicity, durability, and compliance with international safety standards, it provides an efficient and cost-effective solution for ensuring both operator protection and machinery safety.

This model is designed with dual-channel input monitoring, allowing it to supervise two independent circuits from safety devices such as emergency stop buttons, safety gates, light barriers, or two-hand controls. The dual-channel architecture enhances fault tolerance, ensuring that a single failure does not compromise overall system safety. This feature makes the PNOZ X4 suitable for achieving high safety integrity levels in line with EN ISO 13849-1 (PL e) and IEC 62061 (SIL 3).

The relay’s contact configuration provides significant flexibility for system design. With three normally open (N/O) safety contacts, the unit delivers fail-safe outputs capable of directly switching actuators, motors, or contactors to immediately halt hazardous machine operations. The additional normally closed (N/C) auxiliary contact can be used for status indication or diagnostic purposes, providing valuable system feedback to higher-level controllers or operators. This combination allows for both safe interruption of dangerous movements and enhanced visibility of safety system status.

Built for performance, the PNOZ X4 supports a switching capacity of up to 240 V AC at 8 A, in accordance with EN 60947-4-1 utilisation categories (AC/DC-1). This makes it a reliable choice for heavy-duty applications where frequent switching under load is required. Despite this robust capability, the relay remains energy-efficient, consuming just 2.5 W of power in operation.

The unit’s compact design and DIN-rail mounting capability make installation simple and space-efficient within control cabinets. Clearly marked terminals and straightforward wiring reduce commissioning times and minimise the risk of installation errors. Once integrated, the relay provides consistent, maintenance-free safety performance, supporting maximum machine uptime and reduced operational costs.

The PNOZ X4 24VDC 3N/O 1N/C is particularly suited to applications requiring reliable monitoring of emergency stop functions, safety gates, and protective devices across industries such as packaging, automotive, robotics, logistics, and general machinery. Its versatility ensures it can be used in both simple machine applications and more complex safety architectures where multiple safety functions must be monitored simultaneously.

In summary, the Pilz PNOZ X4 24VDC 3N/O 1N/C (774730) is a reliable, energy-efficient, and flexible safety relay that combines dual-channel monitoring, versatile contact outputs, high switching capacity, and ease of installation. As part of the proven PNOZ X series, it provides an ideal solution for safeguarding industrial machinery, ensuring compliance with international safety standards, and protecting both people and equipment.