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Siemens 3TK2826-2BB40 SIRIUS Safety Relay - Spring Terminal

Siemens 3TK2826-2BB40 SIRIUS safety relay with 4 NO instantaneous enabling circuits and spring terminals.

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ManufacturerSiemens

Part number3TK2826-2BB40

Voltage 24V DC

Width 45 mm

Terminals Spring-type

Enabling Circuits (EC) Instantaneous 4 NO

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12-month warranty

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Veteran-owned

CAGE: 9NK75

4 instantaneous NO enabling circuits 3 safety contacts 24V DC operation 45mm width Spring-type terminal Easy wiring

Product description

The Siemens 3TK2826-2BB40 is a SIRIUS safety relay designed for 24V DC applications, featuring a 45mm width with spring-type terminals for quick and secure connections. This basic device offers 4 instantaneous normally open (NO) enabling circuits and 3 safety contacts (SC), with no delayed enabling circuits. It meets high safety standards, achieving a maximum PL of d according to EN 13849-1 and SIL of 3 according to IEC 61508.

This safety relay is suitable for machine safety applications where fast and reliable connections are preferred, such as in control cabinets with vibration or where ease of wiring is a priority. It is used in emergency stop systems and safety interlocking circuits.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation components, can provide the Siemens 3TK2826-2BB40. We offer dependable parts and efficient service to keep your operations running safely.

Technical specifications

Voltage	24V DC
Width	45 mm
Terminals	Spring-type
Enabling Circuits (EC) Instantaneous	4 NO
Enabling Circuits (EC) Delayed	0
Safety Contacts (SC)	3
Functions	8
Max PL	d
Max SIL	3

Common applications

Machine Safety

Emergency Stop Circuits

Safety Interlocking

Industrial Control

Cabinet Building

Compatible systems

Compatible with various safety sensors and control systems requiring SIL 3 / PL d rated safety relays, especially where quick and secure wiring is needed.

Also known as

Siemens 3TK2826-2BB40

Replaces / compatible with

This is a phased-out product. The successor series is 3SK2.

Technical note

Expert tip

Spring-type terminals are particularly advantageous in environments with significant vibration, ensuring consistent electrical contact over time.

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Frequently asked questions

What are the benefits of spring-type terminals on the Siemens 3TK2826-2BB40?

The spring-type terminals on the Siemens 3TK2826-2BB40 offer faster wiring and a more vibration-resistant connection compared to screw terminals, making installation and maintenance quicker and more reliable.