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Siemens 3TK2807-0BB4 DC Safety Contactor with Delay

Siemens 3TK2807-0BB4 DC safety contactor with adjustable delay.

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ManufacturerSiemens

Part number3TK2807-0BB4

Contacts 5 NO (instantaneous) + 1 NC + 3 NO (delayed)

Operation DC

Voltage 24V DC

Delay Time 0.5 - 300s

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Veteran-owned

CAGE: 9NK75

Safety circuit control Delayed switching capability 5 NO, 1 NC instantaneous contacts 3 NO delayed contacts DC 24V operation Adjustable delay (0.5-300s)

Product description

The Siemens 3TK2807-0BB4 is a specialized safety contactor combination designed for applications requiring delayed switching in safety circuits. It features 5 normally open (NO) instantaneous contacts, 1 normally closed (NC) contact, and 3 normally open (NO) delayed contacts with a delay time adjustable from 0.5 to 300 seconds. This unit operates on DC 24V.

This safety contactor is crucial for processes where a controlled delay is needed before a machine can restart or a function can be enabled, providing an added layer of safety. Applications include controlled shutdown sequences or safety interlocks that require a timed response.

Stanlo Automation, a veteran-owned provider of surplus industrial automation parts, offers the Siemens 3TK2807-0BB4, enabling you to implement sophisticated safety control strategies with reliable components.

Technical specifications

Contacts	5 NO (instantaneous) + 1 NC + 3 NO (delayed)
Operation	DC
Voltage	24V DC
Delay Time	0.5 - 300s
Series	3TK28

Common applications

Machine safety

Controlled startup sequences

Industrial automation

Safety interlocks

Timed safety functions

Process control

Compatible systems

Control systems requiring timed safety functions Industrial machinery with DC 24V control and delayed safety interlocks

Also known as

Siemens 3TK2807-0BB4 safety relay 3TK2807-0BB4 delayed safety contactor

Technical note

Expert tip

Carefully set the delay time on the 3TK2807-0BB4 to ensure it meets the specific safety requirements of the application, avoiding delays that could compromise immediate safety response.

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Frequently asked questions

What is the adjustable delay range for the Siemens 3TK2807-0BB4?

The Siemens 3TK2807-0BB4 offers an adjustable delay time for its 3 normally open (NO) delayed contacts, ranging from 0.5 seconds to 300 seconds. This allows for precise timing control in safety circuit applications.