The Siemens 3RH1911-2GA04 is a high-quality auxiliary switch block designed to enhance the functionality of contactor relays and power contactors. This component is engineered to provide reliable switching operations, with a mechanical service life of typically 10 million cycles and an electrical endurance of 200,000 cycles at AC-15, 230V. It features four normally closed (NC) contacts, ensuring a secure and stable connection in various industrial applications.
Constructed with a spring-type terminal, the 3RH1911-2GA04 facilitates easy and efficient wiring, making installation and maintenance straightforward. The switch block is suitable for use within a wide ambient temperature range, from -25°C to +60°C during operation, and can withstand storage temperatures from -55°C to +80°C, ensuring durability and performance stability in diverse working environments.
With an insulation voltage rated at 690V and a surge voltage resistance of 6kV, this auxiliary switch block meets stringent industry standards for electrical safety. Its compact design, featuring snap-on mounting, allows for space-saving integration into existing systems, with dimensions of 36.5mm in width, 37.5mm in height, and 46mm in depth.
The 3RH1911-2GA04 is IP20 rated on the front, providing a basic level of protection against solid objects and making it suitable for use in controlled environments. Its design also includes safety features such as mirror contact functionality according to IEC 60947-4-1 and positively driven operation in compliance with IEC 60947-5-1 when used with 3RT1 and 3RH1 contactors, respectively.
This auxiliary switch block is a reliable choice for those seeking to enhance the control and safety of their electrical systems, making it an essential component in the field of industrial automation.