The Pilz SET3.2: PIT ES3.1 / 2 N/C 1 N/O (Part Number: 400511) is a high-reliability control and signal device designed for emergency stop (E-Stop) applications and safety-related switching tasks in industrial automation. As part of the Pilz PIT ES series, this module delivers a combination of robust switching performance, standards compliance, and environmental resilience, making it an essential component in machine safety systems.

At its core, the device features a versatile contact configuration with 2 N/C (normally closed) safety contacts and 1 N/O (normally open) contact. The dual N/C safety contacts provide redundancy for safely disconnecting hazardous energy sources, ensuring machinery shuts down reliably during an emergency stop activation. The additional N/O contact is typically used as an auxiliary output for functions such as system diagnostics, signalling, or operator feedback. This arrangement enables both effective hazard mitigation and operational transparency, enhancing the overall safety and efficiency of machine systems.

The SET3.2 is fully compliant with EN 60947-5-1, the international standard governing electromechanical control circuit devices. This certification confirms that the device is suitable for use in safety circuits, particularly E-Stops, and provides assurance of its reliability and durability in critical applications.

To further enhance performance, the device incorporates AgNi (silver-nickel) contacts, known for their excellent conductivity, resistance to contact welding, and long service life. This ensures consistent performance even under high switching loads or frequent actuation, reducing downtime and maintenance requirements.

The module is designed to operate reliably across a wide ambient temperature range of -30 °C to +70 °C, making it suitable for both cold storage facilities and high-temperature industrial environments. In addition, its pollution degree 3 rating for clearance and creepage distances ensures reliable operation even in areas where dust, humidity, or other airborne contaminants may be present—common conditions in heavy-duty manufacturing environments.

Compact yet durable, the PIT ES3.1 module in the SET3.2 configuration is easy to integrate into machine control panels, operator stations, and E-Stop boxes. Its practical design ensures straightforward wiring and long-term reliability, making it an excellent choice for OEMs, system integrators, and end-users seeking dependable safety components.

Applications for the SET3.2 include automotive assembly lines, packaging machinery, robotics, logistics systems, and process automation, where emergency stop devices and auxiliary signalling are critical to both operator protection and machine efficiency. By combining safety redundancy with auxiliary functionality, this module supports not only immediate hazard prevention but also smooth maintenance and system monitoring.

In summary, the Pilz SET3.2: PIT ES3.1 / 2 N/C 1 N/O (400511) is a durable, standards-compliant safety contact device that offers flexible switching, long-lasting contact reliability, and excellent environmental resilience. With its dual N/C safety contacts, auxiliary N/O contact, silver-nickel contact construction, and compliance with international safety standards, it provides a dependable solution for ensuring safe and efficient machine operation in demanding industrial environments.