Turck BL20-2DO-R-NO Electronic Relay Output Module

The TURCK BL20-2DO-R-NO electronic relay output module (MPN 6827029) is a two-channel, normally-open relay output module designed for the BL20 distributed I/O system, delivering galvanically isolated, fieldbus-independent relay switching for automation equipment. Each channel provides a NO contact that can switch up to 250 VAC or 30 VDC at up to 2 A, with the module powered by 24 VDC from the BL20 backplane and connections via screw terminals or cage clamps. This plug-in, hot-swappable module integrates into the BL20 base system and offers integrated diagnostics with channel status LEDs, helping maintenance teams quickly assess relay health and support system expansion without lengthy downtime. Typical applications include packaging machines, conveyor controls, automated assembly lines, process automation equipment, and other manufacturing environments that require isolation between field devices and control circuits, such as motors, contactors, solenoid valves, alarms, and auxiliary control circuits. It carries IP20 protection, operates from 0 °C to +55 °C (storage -25 °C to +85 °C), and is approved for CE, cULus, FM Class I Division 2, ATEX, and IECEx certifications.