This is a Pilz PNOZ X3 safety relay.
It is a standalone safety relay used to monitor safety functions in industrial applications, such as emergency stop buttons, safety gates, and light barriers.
Key features include:
Safety Contacts:
Typically includes multiple normally open (N/O) and normally closed (N/C) safety contacts.
Inputs:
Can be wired for 1- or 2-channel operation and can detect shorts across contacts.
Start Options:
Offers automatic or monitored start functionality.
Applications:
Commonly used in hazardous environments like factories and warehouses where quick power cut-off is necessary.