3RH1911-1FA02

The Siemens part number 3RH1911-1FA02 functions as an auxiliary switch block within the SIRIUS series. This device features a configuration consisting of two normally closed (NC) contacts. Capable of handling a rated operational voltage of 690 V AC, it operates at a maximum current of 10A. This capability makes it suitable for a wide range of applications where efficient control and reliability are crucial.

This auxiliary switch block utilizes screw terminals for its electrical connections, allowing for secure integration with various systems. The design accommodates conductor cross-sections ranging from 1.5 mm² to 4 mm², ensuring compatibility with standard wiring practices. The device is designed for a front-mounted application, enabling simple installation in various setups. Importantly, it can also be top-mounted if necessary.

The auxiliary switch boasts an impressive electrical service life, supporting up to 6 million switching cycles under normal operational conditions. Rated impulse withstand voltage is measured at 6 kV, providing additional resilience against voltage spikes or surges. Operating within a temperature range of -25°C to +60°C ensures the unit can function reliably in challenging environments. The compact dimensions of this device are 36 mm in width, 36 mm in height, and 27 mm in depth. Weighing only 0.040 kg, it lends itself well to applications where space is limited. The degree of protection is rated at IP20, safeguarding it against dust in typical indoor environments.