The Siemens 3RH2911-2DA02 is a lateral auxiliary switch block designed for seamless integration with motor contactors, specifically the size S00. This component is engineered to enhance the functionality of contactor relays and power contactors by providing additional switching capabilities. It features two normally closed (NC) contacts, ensuring reliable operation within a broad range of industrial applications.
Constructed with durability in mind, the 3RH2911-2DA02 boasts an impressive mechanical operating life of approximately 10 million cycles and an electrical operating life at AC-15 at 230V of around 200,000 cycles. This robustness is complemented by a high level of contact reliability, with a low incidence of incorrect switching operations, making it a dependable choice for critical circuit control tasks.
The switch block is equipped with spring-loaded terminals, facilitating quick and secure connections while accommodating a variety of conductor cross-sections. It is designed for snap-on mounting, which allows for easy installation and maintenance. With a compact width of just 10mm, it integrates efficiently into electrical assemblies without demanding excessive space.
Safety is a paramount consideration in the design of the 3RH2911-2DA02, which is reflected in its insulation voltage rated at 690V and impulse voltage resistance of 6kV. The product also meets the IP20 protection class standard, ensuring protection against solid objects larger than 12mm and safeguarding the internal components from environmental factors.
The auxiliary switch block operates reliably within a temperature range of -25°C to +60°C during operation and can withstand storage temperatures from -55°C to +80°C. This temperature resilience ensures consistent performance even in challenging conditions.
Overall, the Siemens 3RH2911-2DA02 auxiliary switch block is a high-quality, reliable component that offers enhanced control and operational efficiency for a variety of industrial applications. Its technical sophistication and build quality make it a valuable addition to any electrical control system.