3RH2122-2LB40-2LA0 SIEMENS

The 3RH2122-2LB40-2LA0 is a highly reliable contactor relay specifically designed for railway applications, ensuring dependable performance in demanding environments. This 3-pole contactor relay features a configuration of 2 normally open (NO) and 1 normally closed (NC) auxiliary contacts, providing versatile control options for various railway systems. It operates on a 24 V DC supply voltage, with a wide operating range of 0.7 to 1.25 times the rated voltage (US), ensuring stable operation even with voltage fluctuations. An integrated varistor provides effective surge protection, safeguarding the relay and connected equipment from voltage spikes. The contactor relay is size S00, making it compact and suitable for installations with limited space. It utilizes spring-type terminals for quick, secure, and vibration-resistant connections, simplifying installation and maintenance. Designed for suspended mounting positions, this contactor relay offers flexible installation options to accommodate different railway infrastructure layouts. Siemens' 3RH21 series contactor relays are known for their robust construction and long service life, making them a trusted choice for railway control systems.