Description
The Siemens Industrial Controls 3RA1921-1DA00 Link Module is an electrical-mechanical connecting component used to bridge compatible contactor and motor starter protection units in modular switching assemblies. It operates by providing a structured interconnection between circuit protection parts and switching elements, enabling coordinated assembly without separate wiring bridges. Applied in motor control arrangements, starter configurations, and protection-linked switching HVAC systems, it fits between compatible components to maintain aligned electrical and mechanical coupling. Its compact linking structure contributes to reduced wiring complexity, stable part alignment, and consistent signal transfer across connected control sections.
