3SK1121-2AB40 SIEMENS

The SIRIUS 3SK1121-2AB40 is a basic unit safety relay from Siemens' advanced series, designed to enhance safety in machinery and automation systems. This relay features three normally open (NO) enabling circuit contacts, providing reliable and redundant safety outputs to control critical functions. Additionally, it includes one normally closed (NC) signaling circuit contact for comprehensive monitoring and diagnostics of the safety system's status. The 3SK1121-2AB40 operates on a 24 V DC supply voltage, making it compatible with a wide range of industrial control systems. Its spring-loaded terminals ensure secure and vibration-resistant connections, simplifying installation and maintenance. This safety relay is ideal for applications requiring a high level of safety integrity, such as emergency stop circuits, safety gate monitoring, and two-hand control systems. It helps to prevent accidents and protect personnel by reliably shutting down machinery in hazardous situations. The advanced series design offers enhanced diagnostic capabilities and flexible configuration options, allowing for customized safety solutions. Siemens' commitment to quality and reliability ensures that the 3SK1121-2AB40 provides long-lasting and dependable performance in demanding industrial environments.