What is SIL CL3?

Safety Integrity Level Claim Limit 3: Component Suitability for SIL3 Systems

SIL CL3 (Safety Integrity Level Claim Limit 3) is a specific designation related to SIL certifications, referring to individual components or subsystems. It indicates that a component meets the technical and qualitative requirements to function as part of a larger system that is intended to ultimately form an overall SIL3 system. This means the component itself is designed to be robust and fault-tolerant enough to contribute to achieving SIL3 at the system level. However, it does not guarantee that the entire system will automatically be SIL3 compliant, as the architecture and integration of all parts must also be evaluated for that.