Siemens 3RN20122BA30

The Siemens 3RN20122BA30 is a thermistor motor protection relay designed for reliable monitoring and safeguarding of motors. Housed in a compact 22.5 mm enclosure, this unit features spring-type terminals for easy wiring and includes two change-over contacts to manage control signals effectively. It operates on a 24 V AC/DC supply and offers versatile reset options: manual, automatic, or remote. The relay is equipped with clear status indication through two LEDs, showing ready and tripped conditions, and incorporates a test/reset button for convenient diagnostics. Additionally, it provides galvanic isolation and wire break monitoring to enhance safety and operational reliability. This motor protection relay is available through BSP Automation, ensuring access to high-quality automation components with comprehensive support.