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Siemens 3TK2827-1BB41 SIRIUS Safety Relay - 24V DC, Screw Terminal

Siemens 3TK2827-1BB41 SIRIUS safety relay with relay enabling circuits.

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ManufacturerSiemens

Part number3TK2827-1BB41

Voltage 24 V DC

Width 45 mm

Terminal Type Screw

EC Instantaneous 2 NO

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12-month warranty

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CAGE: 9NK75

24V DC operation Screw terminal connection Adjustable delay (0.05-3s) Monitored start function High safety integrity (SIL 3/2, PL e/d) Compact 45mm width

Product description

The Siemens 3TK2827-1BB41 is a SIRIUS safety relay designed for reliable safety monitoring. This unit operates on 24V DC and features a 45mm width with convenient screw terminals. It provides 2 instantaneous normally open (NO) enabling circuits and 2 delayed normally open (NO) enabling circuits with a delay adjustable from 0.05 to 3 seconds. Additionally, it includes 1 normally closed (NC) safety circuit for monitored start.

This safety relay is suitable for a wide range of industrial applications requiring safety interlocks, such as machine guarding, emergency stop circuits, and process safety. It is commonly found in industries like automotive manufacturing, material handling, and general industrial automation where ensuring personnel safety is paramount.

As a veteran-owned surplus parts distributor, Stanlo Automation offers competitive pricing and reliable access to essential industrial components like the Siemens 3TK2827-1BB41. We understand the critical nature of automation systems and are dedicated to providing quality parts to keep your operations running smoothly and safely.

Technical specifications

Voltage	24 V DC
Width	45 mm
Terminal Type	Screw
EC Instantaneous	2 NO
EC Delayed	2 NO (0.05-3 s)
SC	1 NC
Monitored Start	Yes
SIL	3/2
PL	e/d

Common applications

Machine safety

Emergency stop circuits

Safety interlocks

Process automation

Material handling

Automotive manufacturing

Compatible systems

General industrial control panels

Also known as

Siemens 3TK2827-1BB41

Replaces / compatible with

This is a specific model and does not have a direct replacement listed as standard. Consult Siemens documentation for upgrade paths.

Technical note

Expert tip

Ensure proper wiring of the monitored start circuit for correct safety function and fault detection.

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Frequently asked questions

What are the enabling circuit options for the Siemens 3TK2827-1BB41 safety relay?

The Siemens 3TK2827-1BB41 features 2 instantaneous normally open (NO) enabling circuits and 2 delayed normally open (NO) enabling circuits. The delay for these circuits can be adjusted from 0.05 to 3 seconds.