Siemens 3TK28033-0BB4 safety relay

Siemens Safety Switching Device 3TK2923-0BB4 DC 24V 2S 2NO

Item number: 3TK2923-0BB4

Description:

The Siemens safety switching device 3TK2923-0BB4 is a reliable industrial relay module for safety applications in mechanical and plant engineering. It is designed for use in emergency stop or door monitoring systems and, with its 2 safety outputs (2S) and 2 normally open contacts (2NO), enables safe shutdown in hazardous situations. It operates with a direct voltage of 24V DC and offers high compatibility with industrial control circuits.

The integrated feedback circuit and enabling functions, as well as LED indicators, ensure clear status indication and easy commissioning. The device complies with relevant standards such as IEC 60947-1 and VDE 0660 T.500. It is suitable for demanding control tasks in safety-related applications.

Technical Data:

• Supply voltage: DC 24V

• Switching positions: 2S (2 safety contacts)

• Number of normally open contacts (NO): 2

• Max. switching current AC-1: 6A (at 24V, 230V, 400V)

• Max. power: 0.55 kW (230V), 1.1 kW (400V)

• AC-15 switching capacity: 4A (230V)

• DC-13 switching capacity: 0.5A (24V)

• Protection class: IP20

• Connection: Spring-type terminals

• Auxiliary contacts: B300/Q300, 6A/240V AC

• Housing color: Black with grey front

• Design: compact DIN rail mounting

• Integrated feedback circuit monitoring

• Adjustable time delay: 1 to 2 seconds (t₁–t₄)

• Certifications: CE, UL (LISTED 165C), CSA

• Origin: Made in Germany

Scope of delivery:

1x Siemens 3TK2923-0BB4 safety switching device as shown in the photos

Note:

This is a used device that was removed from a working system. Technically flawless and visually with slight signs of use. Delivery as pictured. For use in safety-relevant areas, inspection by qualified personnel is recommended.