3TK2845-1HB44 SIEMENS

The SIRIUS 3TK2845-1HB44 is a phased-out safety relay from Siemens, now superseded by the 3SK2 series. This safety relay is designed for applications requiring reliable safety functions, utilizing both relay and electronic components for enhanced performance. It operates on a 24 V DC power supply and features a compact 45 mm width, suitable for space-constrained installations. The relay incorporates screw terminals for secure and dependable electrical connections. Its safety outputs include 2 normally open (NO) instantaneous contacts, 2 normally open (NO) delayed contacts, and 1 semiconductor contact (SC). The device supports both automatic start and monitored start functions, providing flexibility in system design. As a basic device, it offers a foundation for building comprehensive safety circuits. It can achieve a maximum Performance Level (PL) according to EN 13849-1 and a Safety Integrity Level (SIL) of 3 according to IEC 61508, ensuring a high level of safety integrity. For replacement or new installations, the 3SK2 series is recommended as the successor product line.