The Siemens 3RQ4018-2AN08-0AA0 is an output coupler with an integrated relay from the SIRIUS 3RQ4 family of narrow-design coupling relays. It switches a single change-over contact rated for 6 A thermal current, controlled by a 110 V DC coil that operates across 0.7–1.25× Us (77–137.5 V DC). The 6.2 mm housing saves DIN-rail space in control panels where multiple isolation points are needed between a PLC output and a field load. The narrow 6.2 mm width means you can pack more isolation points per meter of DIN rail compared to a standard 17.5 mm interface relay.
RoHS compliance effective September 2024.