The Siemens 3RV1901-1F is a transverse auxiliary switch engineered for integration with circuit breakers of sizes S00 through S3. It features two normally open (2 NO) contacts and utilizes screw terminals for secure wiring connections, making it suitable for a range of industrial control applications where additional switching functions are required. With compact dimensions of 39 x 45 x 12 mm and a lightweight construction of just 18 grams, it ensures easy installation even in space-constrained environments.
This component aligns with Siemens' modular design ethos, facilitating seamless incorporation into existing systems. Although the product has been discontinued, its specified successor is the updated model 3RV2901-1F. The auxiliary switch remains relevant as a reference point for compatibility checks during system upgrades or legacy equipment maintenance. Its design prioritizes reliability and operational precision in industrial automation contexts.