The central module 3RK3121-1AC00 from Siemens is a highly advanced installation relay specifically designed for modular safety systems. It belongs to the SIRIUS product line and offers reliable connectivity to AS-Interface bus systems. With a compact design of 45 mm in width, it is ideal for complex safety applications that require precise control and monitoring. The module allows for the control of up to eight safe outputs and is parameterizable with the Safety ES software. It meets high safety standards, including SIL3 according to IEC 61508 and Performance Level E according to ISO 13849-1, making it an excellent choice for industrial applications. The central module is suitable for use in safety-critical environments and provides easy integration into existing systems.

• Control of up to 8 safe outputs on the AS-Interface bus
• Parameterizable with Safety ES software
• Meets SIL3 (IEC 61508) and Performance Level E (ISO 13849-1)
• Compact design with a width of 45 mm
• No expansion module can be connected.