The Pilz PSEN ma2.1p-11/LED/3mm/1switch (Part No. 506401) is a robust and versatile safety switch engineered to provide reliable position monitoring of protective guards, gates, and access points in industrial machinery. With its strong environmental resilience, integrated diagnostics, and compliance with international standards, it is well-suited to demanding automation environments where safety and reliability cannot be compromised.

A key advantage of the PSEN ma2.1p is its ability to operate in a wide ambient temperature range of -25 °C to +70 °C, making it suitable for diverse applications, from cold storage and refrigerated processing areas to high-temperature manufacturing facilities. At altitudes up to 2000 m, the device operates at full performance, with capability extended up to 4000 m above sea level, ensuring suitability for installations in elevated regions or industries with unique environmental challenges.

The switch is designed and tested in accordance with EN 60947-5-3 EMC standards, ensuring immunity to electromagnetic interference. This makes it particularly reliable in modern industrial settings, where high-power equipment, drives, and control systems often generate significant electrical noise. By maintaining stable operation under such conditions, the PSEN ma2.1p ensures machine safety systems remain unaffected by electromagnetic disturbances.

Additionally, the switch has been tested to EN 60947-5-2 vibration standards, ensuring long-term durability in applications where vibration and mechanical stress are constant factors. This is especially valuable in industries such as automotive, metalworking, and material handling, where heavy-duty equipment generates significant vibration during operation.

The inclusion of an integrated LED indicator provides instant visual confirmation of switch status. This feature simplifies commissioning and ongoing maintenance by allowing operators and technicians to quickly verify proper functioning, reducing downtime and enabling faster troubleshooting when issues occur. The LED enhances diagnostic transparency, which is particularly important in complex safety systems with multiple access points.

With a compact 3 mm actuation distance, the PSEN ma2.1p provides precise and responsive switching, ensuring hazardous machine functions are reliably disabled when a guard door or safety gate is opened. Its rugged construction ensures consistent operation over long service life, even in harsh environmental conditions.

Applications for the PSEN ma2.1p span across industries such as packaging, food and beverage, pharmaceuticals, robotics, logistics, and automotive manufacturing. It is particularly well-suited to machinery where frequent guard door access is required and where clear visual status indication supports efficient operation and maintenance.

In summary, the Pilz PSEN ma2.1p-11/LED/3mm/1switch (506401) combines wide environmental suitability, EMC compliance, vibration resistance, and integrated LED diagnostics. It is a durable, precise, and user-friendly safety switch that ensures reliable machine guarding and compliance with international safety standards, making it an essential component in modern industrial safety systems.