Weidmüller 1123120000 Relay Module

The WEIDMüllER 1123120000 Relay Module (Model TRZ 24VDC 1CO AU) provides reliable, relay-based control for PLCs, control devices, and field equipment in industrial automation, delivering dependable signal isolation and switch control between disparate components. Designed for control panels, PLC cabinets, and process control assemblies, it features a 24 VDC coil voltage (±20%), a single Changeover (1CO) contact with AgNi gold-plated contacts, and a continuous 6 A current rating that supports up to 250 VAC or 250 VDC switching. The module mounts on a DIN rail TS35 and uses a tension-clamp connection for secure wiring, with a green LED status indicator for at-a-glance operation. Protective features include a free-wheeling diode and reverse polarity protection, and it is rated for -40°C to +60°C operation with IP20 enclosure protection, making it suitable for industrial-duty applications. Typical applications include control panel builds, system retrofits, and expansion of automation control systems in manufacturing facilities, where reliable signal switching and circuit isolation are critical. Common replacements listed for this interface relay include Phoenix Contact PLC Interface Relay, Allen-Bradley 700-HK Interface Relay, and Schneider Electric Interface Relay.