Safety relay 3TK28 24V DC 3NO+1NC

Name: Safety relay 3TK28 24V DC 3NO+1NC
Brand: Siemens
Availability: Discontinued

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EAN: 4011209840539

MPN: 3TK2820-1CB30

Package: 1

Estimate delivery time at our warehouse (approx.): By request

Technical Information

Item condition	New
Manufacture name	Safety relay 3TK28 24V DC 3NO+1NC
Brand	Siemens
Categories	Other Products

Packing details

Packing level 1

4011209840539

Description

The Siemens SIRIUS 3TK2820-1CB30 is a safety relay equipped with relay enabling circuits (EC) designed for high-demand safety applications. It operates on a 24 V AC/DC power supply and features a compact profile with a 22.5 mm width and screw terminal connections, ensuring ease of integration in control panels. This basic device supports both auto-start and monitored start configurations.

Key functional characteristics include three normally open (NO) instantaneous enabling circuits for immediate signal response, one normally closed (NC) signaling contact for status monitoring, and compliance with the highest error category, EN ISO 13849-1 Category 4. The unit achieves a Performance Level (PL) rating of "e" per EN ISO 13849-1 standards and Safety Integrity Level (SIL) 3 as defined by IEC 61508, making it suitable for critical applications requiring robust risk mitigation.

Physically, the device has dimensions of 117 x 33 x 126 mm and weighs approximately 0.299 kg, allowing easy handling during installation. While this product has been discontinued in favor of its successor model (3SK1111-1AB30), it remains an example of Siemens' commitment to reliability in industrial automation systems.