The Pilz PSEN 1.1P-23/PSEN 1.1-20/8MM/ATEX/1 – 504223 is a specialised safety switch engineered for use in hazardous environments where explosive dusts may be present. As part of the trusted Pilz PSEN product family, this switch delivers both functional safety and compliance with strict ATEX requirements, making it ideal for industries where operator protection and explosion prevention are critical.

Operating at a 24 V DC switching voltage, the PSEN 1.1P-23 ensures accurate and stable monitoring of protective devices such as guards, covers, and access points. Its compact 8 mm design provides a space-saving solution that integrates seamlessly into safety circuits without compromising reliability. The switch is optimised for consistent performance in demanding conditions, offering dependable signal switching across a range of industrial applications.

A key advantage of this model is its ATEX certification, identified under SEV 12 ATEX 0121 X, confirming its suitability for use in explosive dust atmospheres. It is classified as Category II 3D, meaning it can be deployed in Zone 22 environments where combustible dust may occur occasionally. This certification underscores its safety credentials and ensures compliance with international regulations for explosion protection.

The switch is also rated Ex mc tc IIIC T80 °C, ensuring reliable protection against dust ignition hazards. This rating guarantees that surface temperatures remain controlled and safe, even during prolonged operation, preventing the risk of ignition in explosive dust environments.

For added flexibility, the PSEN 1.1P-23 supports operation within an ambient temperature range of -10 °C to +55 °C, making it suitable for deployment across diverse industrial sectors, from manufacturing and processing plants to material handling and storage facilities. Its rugged design ensures long service life and consistent reliability, even under frequent actuation cycles.

Typical applications include environments such as grain processing plants, chemical facilities, pharmaceutical production, and other industries where dust hazards are present. The switch provides secure monitoring of safety gates, covers, or access points, ensuring that machinery cannot be accessed until it is in a safe state.

In summary, the Pilz PSEN 1.1P-23/PSEN 1.1-20/8MM/ATEX/1 – 504223 combines reliable 24 V DC switching with full ATEX compliance for dust zones, offering a compact and durable solution for explosion-protected environments. With its certified safety design, robust performance, and wide operating range, it is an ideal choice for safeguarding both operators and equipment in hazardous applications.