PHOENIX CONTACT REL-MR-24DC/21AU 2961121

Phoenix Contact Miniature Power Relay for Automation Description The REL-MR-24DC/21AU from Phoenix Contact is a high-reliability plug-in miniature power relay, identified by order number 2961121. It is engineered for demanding industrial applications, operating with a 24V DC coil voltage. This relay features a single changeover contact (SPDT) with a hard gold plating over AgNi material, making it exceptionally suited for switching both low-power signals and loads up to 6A at 250V AC. Its compact design allows for high-density mounting in control cabinets and PLC interface modules. Order now from profideals for expert support and fast delivery. Specifications Manufacturer: Phoenix Contact Model: REL-MR-24DC/21AU Order Number: 2961121 Coil Voltage: 24V DC Contact Configuration: 1 x Changeover Contact (SPDT) Contact Material: AgNi, hard gold-plated Maximum Switching Current: 6 A Maximum Switching Voltage: 250V AC/DC Mounting: Pluggable (for relay base) Label Info Phoenix Contact No. 2961121 24V= 6A/250V~ Au (Gold Contact) Application This miniature relay is widely used in industrial automation, process control, and building automation. It serves as a reliable interface between PLC outputs and field devices such as contactors, small motors, lamps, and solenoids. The gold-plated contacts ensure excellent performance in applications with low-level signals. Country of Origin Made in Czech Republic. CO2 Impact By purchasing this pre-owned but fully functional relay, you contribute to a circular economy and help avoid the CO2 emissions associated with manufacturing a new unit, estimated at 0.28 kg. Availability This item is in stock and available for immediate dispatch. FAQ Question? What is the benefit of the hard gold-plated contacts on this relay?AnswerThe hard gold plating on the AgNi contacts prevents oxidation and ensures very low contact resistance. This makes the relay ideal for reliably switching both low-level signals (millivolts, milliamps) and power loads up to 6A without signal degradation. Question? Can this relay be used with any relay base from Phoenix Contact?AnswerThis relay is designed for the RIFLINE complete series and specific PLC-INTERFACE terminal blocks. To ensure compatibility, it should be used with bases like PLC-BSC- 24DC/21 (part no. 2966016) or similar sockets designed for this miniature relay footprint. Always check the datasheet for the correct base. Question? What does the ‘AU’ suffix in ‘REL-MR-24DC/21AU’ signify?AnswerThe ‘AU’ suffix indicates the contact material. In this case, it stands for Gold (Aurum in Latin). It specifies that the relay is equipped with hard gold-plated contacts, distinguishing it from versions with standard AgNi or other contact types. profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. Last Update: Friday, March 13, 2026