The SIEMENS 3TK2810-1BA41 is a SIRIUS safety relay for speed monitoring that runs on 24 V DC and fits into a compact 45 mm width housing. Designed for safety-oriented speed monitoring, it provides two instantaneous normally-open contacts and two solid-state contacts with screw terminals for secure wiring. The device supports electrical auto-start or manual start and is capable of reaching PL e under EN 13849-1 and SIL 3 under IEC 61508, making it suitable where high functional safety performance is required. Its straightforward terminal layout and compact size simplify installation in control panels.
