Pilz PNOZ s3 Safety Relay, 24VDC, 2 N/O Contacts

The Pilz PNOZ s3 safety relay is a high-performance component engineered for the reliable monitoring of safety circuits within industrial automation environments. Operating on a 24VDC power supply, this unit is specifically designed to enhance machine safety by providing a dependable method for interrupting power during emergency events. With its two normally open (N/O) safety contacts, it serves as a critical link in maintaining compliance with international safety standards for industrial control systems.

Advantages

This safety relay offers exceptional reliability and fast response times, which are essential for protecting personnel and equipment in demanding industrial settings. Its compact design allows for efficient integration into existing control cabinets, while the robust construction ensures long-term durability even under continuous operation. By utilizing advanced internal diagnostics, the device provides consistent performance and helps minimize downtime in automated production lines.

Suitable for

• Emergency stop monitoring
• Safety gate and guard monitoring
• Light curtain integration
• Industrial automation safety circuits
• Machine control systems requiring reliable power interruption

When it may not be suitable

This relay may not be suitable for applications requiring more than two safety contacts or for systems operating on AC voltage levels without an appropriate power supply converter. It is also not intended for use in environments where specialized safety functions beyond standard monitoring are required.

Key specifications

• Supply voltage: 24VDC
• Safety contacts: 2 normally open (N/O)
• Function: Safety circuit monitoring
• Application: Industrial automation

How to use

Installation should be performed by qualified personnel in accordance with the manufacturer's technical documentation. The device is typically mounted on a standard DIN rail within a control cabinet. Wiring must be connected to the designated terminals for power supply and safety inputs, ensuring that all connections are secure and follow the specific safety circuit diagram for the machine. Once installed, the device should be tested to verify that it correctly interrupts the safety circuit when triggered.

What to consider before purchase

• Verify that your control system operates on 24VDC power.
• Ensure the number of safety contacts meets your specific circuit requirements.
• Check compatibility with existing safety sensors and switches.
• Confirm that the installation environment meets the required protection ratings.

Usage recommendations

Always perform a functional safety test after installation and before putting the machinery into regular operation to ensure the relay correctly triggers the safety stop.