Siemens Contactors Auxiliary switch module 613534 - Siemens 3RH29111FA40, The Siemens 3RH2911-1FA40 Auxiliary Switch Module is a high-quality electrical component designed for use with contactors. Rated at 10 A, this module is ideal for enhancing control circuit versatility in industrial automation and motor control systems. Typically, it is employed to provide additional signalling and control functionalities in various electrical circuits. Siemens 3RH2911-1FA40 SIRIUS Auxiliary Switch module 10 A 4 S paths