SICK UE410-4RO4 Relay

UE410-4RO4 is a Flexi Classic safety-relay expansion module from SICK that adds four normally open relay outputs to a Flexi Classic safety controller system. It operates from a supply via FLEXBUS+ and is compatible with 18–30 V DC input voltages, delivering four enable contact paths on terminals 13/14, 23/24, 33/34, and 43/44, along with four signaling contacts (Y14, Y24 and Y1/Y2, Y3/Y4) for monitoring and interlock signaling. Each output is rated up to 6 A, and the module uses a plug-in spring-terminal interface for straightforward wiring while drawing up to about 3.2 W of power and requiring protection class III operation for low-voltage safety circuitry. In terms of safety performance, UE410-4RO4 carries SIL 3 (IEC 61508) and PL e (EN ISO 13849) ratings, aligning with safety-critical applications such as emergency-stop interlocks and safety-gate control when used as part of a UE410/Flexi Classic configuration. This relay expansion is designed to extend safe output capability in industrial machinery, providing reliable, hard-wired signaling that directly supports safety-related control schemes without introducing non-redundant or non-compatible components.