3RH2122-2KF40 SIEMENS

The 3RH2122-2KF40 is a coupling contactor relay manufactured by Siemens, designed to interface PLC outputs with higher-power devices. This relay features a contact configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, providing versatile switching capabilities. It operates on a 110 V DC control voltage, with a wide operating range of 0.7 to 1.25 times the rated voltage (US). An integrated suppressor diode protects the relay and connected circuitry from voltage spikes during switching. The 3RH2122-2KF40 is size S00, making it compact and suitable for space-constrained applications. It utilizes spring-type terminals for quick, reliable, and vibration-resistant connections, ideal for PLC output applications. This relay is commonly used in industrial automation systems to isolate and amplify PLC signals for controlling motors, valves, and other actuators. Its robust design and integrated features ensure reliable performance and extended service life. The combination of multiple contacts and surge suppression makes it a versatile and dependable component for various control applications.