3RH2140-2SB40 SIEMENS

The 3RH2140-2SB40 is a coupling contactor relay manufactured by Siemens, designed for switching auxiliary circuits and control signals in industrial applications. This relay features four normally open (4 NO) contacts, providing reliable and versatile switching capabilities. It operates on a 24 V DC control voltage, with a wide operating range of 0.85 to 1.85 times the rated voltage (US), ensuring stable performance even with voltage fluctuations. An integrated suppressor diode protects the relay coil and connected circuits from voltage spikes during switching. The 3RH2140-2SB40 comes in size S00, a compact design suitable for space-constrained installations. It utilizes spring-type terminals for quick, secure, and vibration-resistant connections, simplifying wiring and maintenance. This coupling contactor relay is ideal for interfacing between different control systems, amplifying signals, and isolating circuits. Its robust construction and reliable performance make it a valuable component in various automation and control applications. Siemens is a trusted brand known for quality and innovation in electrical engineering.