The Siemens 3RH1911-1HA31 is a high-quality auxiliary switch block designed to enhance the functionality of motor contactors. This component is engineered to facilitate both contactor relay and power contactor applications, ensuring reliable and efficient operation within a wide range of industrial settings.
Crafted with a robust screw connection, the 3RH1911-1HA31 features a configuration of 3 normally open (NO) and 1 normally closed (NC) contacts, conforming to the DIN EN50012 standard. This makes it a versatile choice for various control and signalling circuits. The switch block is rated for an insulation voltage of 690V and has an impulse voltage resistance of 6kV, highlighting its capability to withstand challenging electrical environments.
The auxiliary switch block is designed for snap-on mounting, which allows for quick and easy installation onto compatible devices. With dimensions of 36.5mm in width, 37.5mm in height, and 41.5mm in depth, it is compact enough to fit into tight spaces while still providing easy access for maintenance.
In terms of performance, the 3RH1911-1HA31 boasts a mechanical operating cycle of typically 10 million operations and an electrical operating cycle of 200,000 at AC-15, at 230V. This demonstrates the switch block's durability and long service life, making it a reliable choice for continuous use.
The auxiliary switch block operates effectively within an ambient temperature range of -25°C to +60°C, ensuring consistent performance even in varying climatic conditions. Its IP20 protection class rating on the front indicates a basic level of protection against solid objects, making it suitable for use in controlled environments.
Overall, the Siemens 3RH1911-1HA31 auxiliary switch block is a dependable and practical component for enhancing control systems in industrial applications. Its robust design, combined with its technical capabilities, makes it a valuable addition to any setup requiring precise and durable switching solutions.