3TH4280-0LF4 SIEMENS

The 3TH4280-0LF4 is a contactor relay manufactured by Siemens, specifically designed and rigorously tested for railway applications, ensuring reliable performance in demanding environments. This relay conforms to DIN EN 50011 standards, guaranteeing compatibility and adherence to established industry norms. It features an 8 NO (Normally Open) contact configuration, providing ample capacity for various control and signaling circuits. The relay utilizes screw terminals for secure and dependable electrical connections, minimizing the risk of loose connections and ensuring long-term operational stability. An integrated varistor offers surge protection, safeguarding the relay and connected equipment from voltage spikes and transients. It is designed for operation with a 110 V DC control voltage, with an operating range of 0.7 to 1.25 times the rated voltage (0.7...1.25xUS), ensuring reliable performance even with voltage fluctuations. This contactor relay is a robust and dependable solution for railway control systems, offering a combination of performance, safety, and durability. Its design and features make it well-suited for critical applications where reliability is paramount.