The Pilz PZA 300/24VDC 1N/O 2N/C (Part No. 774029) is a dependable safety relay designed to monitor and control essential safety functions within industrial environments. Built as part of Pilz’s renowned safety relay product line, the PZA 300 combines robust switching performance with efficient energy consumption, making it a trusted choice for machine builders and plant operators focused on reliability and compliance.

Operating with a 24 V DC supply voltage, the PZA 300 is optimised for integration into modern low-voltage safety systems. Its low power consumption of just 3 W supports efficient operation, reducing the overall energy footprint of control cabinets and enabling long-term cost savings. This makes it especially suitable for facilities aiming to balance safety integrity with operational efficiency.

The PZA 300’s contact configuration provides engineers with flexibility when designing safety circuits. It includes one normally open (N/O) safety contact for directly switching off hazardous energy sources such as motors, valves, or actuators in emergency situations. In addition, the relay features two normally closed (N/C) auxiliary contacts, which can be used for monitoring functions, signalling to control systems, or feedback loops. This dual auxiliary output capability enhances system diagnostics and ensures reliable communication between safety components.

Tested and certified under EN 60947-4-1 utilisation categories (AC/DC1), the PZA 300 ensures robust and compliant switching performance for both alternating and direct current applications. This compliance gives plant operators and machine builders confidence that the relay can withstand industrial demands while fulfilling international safety requirements.

The relay also supports integration into circuits protected by appropriate device circuit breakers and conductor cross sections, ensuring additional electrical safety and durability in use. This makes it adaptable across a wide range of machine and system designs where proper conductor sizing and protection are essential.

Engineered with Pilz’s hallmark focus on industrial reliability and ease of use, the PZA 300 features a compact design that allows for easy installation in crowded control cabinets. Clear terminal assignments reduce wiring errors and commissioning time, while its rugged build quality ensures long service life with minimal maintenance requirements.

The PZA 300/24VDC 1N/O 2N/C is suited for applications in industries such as manufacturing, robotics, packaging, logistics, and process automation, where emergency stop devices, safety gates, and other protective equipment must be reliably monitored. By ensuring rapid and safe disconnection of dangerous machine functions, the relay plays a critical role in protecting personnel and equipment.

In summary, the Pilz PZA 300/24VDC 1N/O 2N/C offers low-power DC operation, versatile contact configuration, standards-compliant performance, and flexible integration options. It is a reliable and efficient safety relay that enhances both machine protection and operator safety, ensuring compliance with international standards while supporting efficient industrial operations.