The RPM11BD is a plug-in power relay from the Harmony Electromechanical Relays RPM series, designed for switching electrical circuits. It operates on a 24V DC control circuit and features a single changeover (1 C/O) contact arrangement rated for a conventional enclosed thermal current of 15A. Key features include a lockable test button for easy diagnostics, a release time of 20 ms at nominal voltage, and a wide operating temperature range from -40°C to 55°C. With high mechanical durability of 10,000,000 cycles and compliance with major international standards, this relay is suitable for a wide range of industrial control and automation applications requiring reliable power switching.