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Siemens 3TK2806-0BB4 DC Safety Contactor with Latching

Siemens 3TK2806-0BB4 DC safety contactor with self-latching (Phased-out).

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ManufacturerSiemens

Part number3TK2806-0BB4

Contacts 5 NO + 1 NC

Operation DC

Voltage 24V DC

Latching Self-latching (K1)

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Veteran-owned

CAGE: 9NK75

Safety circuit control 5 NO, 1 NC contacts DC 24V operation Self-latching mechanism (K1) Enabling and signaling functionality SIRIUS series

Product description

The Siemens 3TK2806-0BB4 is a safety contactor combination featuring 5 normally open (NO) and 1 normally closed (NC) contacts, designed for enabling and signaling circuits. It includes a self-latching mechanism (K1) and operates on DC 24V. Please note, this is a phased-out product, with the 3SK series being its successor.

This contactor was utilized in safety applications requiring a maintained state after a safety trip, commonly in industrial machinery control for emergency stop and safety interlock systems. Its DC operation and latching feature provided specific safety guarantees.

Stanlo Automation, a veteran-owned distributor of industrial automation surplus, can still source the Siemens 3TK2806-0BB4 for legacy systems or where specific component replacement is needed, ensuring continuity for your operations.

Technical specifications

Contacts	5 NO + 1 NC
Operation	DC
Voltage	24V DC
Latching	Self-latching (K1)
Series	3TK28
Status	Phased-out

Common applications

Machine safety

Emergency stop circuits

Industrial automation (legacy systems)

Control panels

Safety interlocks

Compatible systems

Legacy control systems requiring DC 24V safety interlocks with latching

Also known as

Siemens 3TK2806-0BB4 safety relay 3TK2806-0BB4 safety contactor with latch

Replaces / compatible with

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

Technical note

Expert tip

For new installations, it is recommended to utilize the successor 3SK series, as the 3TK2806-0BB4 is a phased-out product.

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Frequently asked questions

Is the Siemens 3TK2806-0BB4 still available and what is its successor?

The Siemens 3TK2806-0BB4 is a phased-out product. Its successor series is the Siemens 3SK. While availability of the 3TK2806-0BB4 may be limited to surplus stock, Stanlo Automation can assist in sourcing this part for existing systems.