The Siemens 3RH5921-1FA22 Mounting Block is a high-quality auxiliary contact block designed to expand the functionality of contactors and control relays. It features a 4-pole configuration with 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, compliant with EN 50005 standards.

This mounting block is engineered for seamless integration with Siemens control components, ensuring reliable switching performance and easy installation. Its durable construction provides long service life, making it suitable for demanding industrial environments.