The Siemens 3RH1911-1GA04 is a high-quality auxiliary switch block designed for seamless integration with contactor relays. This component is engineered to provide reliable switching operations within industrial control systems. It features four normally closed (NC) contacts, conforming to the DIN EN50011 standard, ensuring compatibility with a wide range of applications.
Constructed with durability in mind, the switch block boasts a mechanical service life of approximately 10 million switching cycles, making it a robust choice for demanding environments. The electrical endurance is equally impressive, with a typical rating of 200,000 cycles at AC-15, 230V.
Safety is a priority with this auxiliary switch block, which comes with an IP20 protection class on the front, safeguarding against solid objects larger than 12.5mm. It is designed to withstand insulation voltages up to 690V and has a surge voltage resistance rated at 6kV, providing peace of mind in various operating conditions.
The compact design features snap-on mounting for quick and easy installation, with dimensions of 36.5mm in width, 37.5mm in height, and 41.5mm in depth. The screw-type terminals offer a secure and reliable electrical connection for auxiliary and control current circuits, accommodating a range of conductor cross-sections.
This auxiliary switch block is a testament to Siemens' commitment to quality and reliability, making it an essential component for enhancing the functionality and efficiency of your industrial control systems.