3TK2821-1CB30

Part number 3TK2821-1CB30 from Siemens, belonging to the SIRIUS series, serves as a safety relay with critical operational specifications. This component functions effectively within a frequency range of 50 Hz to 60 Hz, supported by a nominal voltage of 24 V. The relay is equipped with three enabling outputs and one auxiliary output, allowing for integration into safety-critical systems. It handles thermal currents up to 5.0 Amperes, which is essential for numerous operational scenarios.

For installation, the relay provides screw type terminals, facilitating reliable wiring connections. It can be mounted using either screws or a DIN-rail, ensuring versatility in different configurations. In terms of environmental ratings, the 3TK2821-1CB30 carries an IP protection rating of IP40, which indicates it is safeguarded against solid objects larger than 1 mm but is not completely sealed against dust or moisture. This safety relay is suitable for operation at altitudes up to 1000 meters and can be stored in environments with up to 80% relative humidity, provided that condensation is not present. It may be operated at altitudes up to 2000 meters, though that is the rated limit for performance.