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Siemens 3TK2834-1BB40 SIRIUS Safety Relay - 24V DC

Siemens 3TK2834-1BB40 SIRIUS Safety Relay

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ManufacturerSiemens

Part number3TK2834-1BB40

Voltage 24V DC

Width 45 mm

Terminals Screw

Safety Contacts 2 NO + 2 NC

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2 NO + 2 NC instantaneous safety contacts 24V DC operation SIL 3, PL e rating Designed for press control 45mm width Screw terminals

Product description

The Siemens 3TK2834-1BB40 is a SIRIUS safety relay specifically designed for press control applications. It operates on a 24V DC power supply and features a 45mm width with screw terminals for secure mounting. This relay is equipped with 2 normally open (NO) and 2 normally closed (NC) instantaneous safety contacts.

Engineered for high safety requirements, this device achieves a Safety Integrity Level (SIL) of 3 and a Performance Level (PL) of e. It is designed for applications like emergency stops and protective circuits, ensuring reliable machine operation and personnel safety.

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Technical specifications

Voltage	24V DC
Width	45 mm
Terminals	Screw
Safety Contacts	2 NO + 2 NC
SIL	3
PL	e
Application	Press Control

Common applications

Press control systems

Machine safety

Emergency stop circuits

Safety interlocks

Industrial automation

Compatible systems

Works with safety sensors, E-stop buttons, and light curtains used in press control systems.

Also known as

Siemens 3TK28 Press Control Relay SIRIUS Safety Relay

Replaces / compatible with

This product is listed as phased-out, with successors available in the 3SK series. Consult Siemens documentation for the exact replacement part.

Technical note

Expert tip

The 2 NO + 2 NC contact configuration is common for emergency stop and safety gate monitoring in press applications.

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Frequently asked questions

What are the specific safety ratings for the Siemens 3TK2834-1BB40 safety relay?

The Siemens 3TK2834-1BB40 safety relay is designed to meet stringent safety standards, achieving a Safety Integrity Level (SIL) of 3 and a Performance Level (PL) of e.