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2-year Warranty

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Siemens 3TK2807-0BB4

1 rating

1 Available

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2 Year warranty

Part Number3TK2807-0BB4
Model #3TK28070BB4
Warranty2 Year
Supply voltage24VDC
Contacts5 NO+1 NC
Contact3 NO

Our Repair Services

MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.

Repair Benefits

MRO can restore your failed 3TK2807-0BB4 to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.

Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2-year warranty.

Our technicians have vast experience with most manufacturers and models. In addition to this 3TK2807-0BB4 we also repair a wide range of other Siemens products, so if you don’t see the model you need, please contact us.

Core Exchange

If you are interested in getting credit for your faulty 3TK2807-0BB4, just let us know, and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.

  • Shipping Weight : 1lb

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Ask about exchanging your faulty 3TK2807-0BB4 for credit when ordering from MRO Electric

MRO Electric provides a 2-year warranty on every item we sell and repair. We stand behind all of our products and guarantee them for the full 2 years. If there is an issue with any of our products within the warranty period, we will evaluate the unit and repair or replace it under warranty.

Siemens 3TK2807-0BB4 Overview

Siemens products are manufactured in Germany and are designed for Automotive, aerospace, power generation, and electronics usage. They come with a 2-year warranty from MRO Electric. We also carry Breakers from other manufacturers such as FANUC and Yaskawa.

Siemens 3TK2807-0BB4 Circuit

The 3TK2807-0BB4 is a safety-enabling and signaling circuit manufactured by Siemens, a leading company in industrial automation and electrical engineering. This product is designed to provide reliable safety features for various industrial applications, ensuring the protection of both personnel and equipment.


As a safety enabling and signaling circuit, the 3TK2807-0BB4 plays a critical role in controlling and monitoring safety-related functions in machines and processes. It is commonly used in safety-critical applications, where it is essential to prevent hazardous situations and enable safe operations.

The product features a contactor with 5 normally open (NO) and 1 normally closed (NC) contact. This combination of contacts allows for versatile control and signaling options. The 5 NO contacts can be used for enabling or actuating various safety functions, while the 1 NC contact is typically utilized for signaling purposes or to initiate specific safety actions.

One of the key features of the 3TK2807-0BB4 is the provision of 3 delayed NO contacts. These delayed contacts are designed to introduce a time delay between the actuation of the safety circuit and the response of the connected devices or safety mechanisms. This delay feature is valuable in certain safety applications, allowing sufficient time for a safe shutdown or initiation of protective measures.


The 3TK2807-0BB4 is designed to meet stringent safety standards, ensuring its suitability for use in critical applications. It is built to provide reliable and fail-safe performance, giving operators and users confidence in its operation.

Siemens is known for its commitment to quality and safety, and the 3TK2807-0BB4 is no exception. The product undergoes rigorous testing and quality checks during the manufacturing process to ensure compliance with industry standards and regulations.


As with all Siemens products, the 3TK2807-0BB4 is designed for easy installation and integration into existing safety circuits and control systems. It features a user-friendly design with clear markings and terminal labels, simplifying the wiring and setup process.


The 3TK2807-0BB4 can be employed in a wide range of industrial applications where safety is of utmost importance. This includes use in machinery, manufacturing processes, automated systems, and other scenarios where safety circuits are required to protect operators and prevent accidents.


With its robust construction and reliable performance, the 3TK2807-0BB4 contactor is a crucial component in ensuring the safe and efficient operation of industrial processes. It provides peace of mind to operators and system designers, knowing that safety functions are well-managed and protected.

In summary, the Siemens 3TK2807-0BB4 is a safety enabling and signaling circuit that offers 5 normally open and 1 normally closed contacts, with the added benefit of 3 delayed NO contacts. Its design and construction adhere to high safety standards, making it a reliable and indispensable component in safety-critical applications. With Siemens' reputation for quality and expertise in industrial solutions, the 3TK2807-0BB4 contactor stands as a trusted choice for ensuring the safety and protection of workers and machinery alike.

Contact Us Today For More Information About Siemens Products

Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 3TK2807-0BB4, take a look at more from our Breakers line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 3TK2807-0BB4 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.

5 stars

4.9 Overall Satisfaction Rating

Over 1700 Ratings from Actual Customers

Read Our Reviews

Very happy with the overall service, delivery, communication and delivery,

Conley Cooke

I needed a special drive, found it, and I was quickly assisted by Joe Kaminski. Everything was exactly as it should be....


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