Image shown may not reflect the final product

Siemens 3TH4394-0BB4

Name: 3TH4394-0BB4
Brand: Siemens
SKU: 3TH4394-0BB4
Price: 94.01 GBP
Availability: InStock

Wrong part? Click here

£94.01 (ex. VAT)

3 ready to ship

Learn more about our conditions.

Image shown may not reflect the final product

Marvo Stock ID MV-7J21

HS Code 85364900

SKU 3TH4394-0BB4

Condition New unboxed

Warranty 12 months

Weight (kg) 0.20

Length (mm) 135.00

Width (mm) 55.00

Height (mm) 78.00

Express delivery

Lightning fast delivery if ordered within 00:00:00

Need it urgently?

Call: +44 20 4570 3439

Quoting Marvo Stock ID: MV-7J21

Select condition

We're working hard to deliver your orders on time over the holiday period, but please be aware that some lead times may be extended.

Learn more about our conditions.

Returns Hassle-free returns

Thumbs up No hidden fees or duties

Shipping Swift dispatch and delivery

Similar Products

3SB1901-3AC

Available from

£19.41 (ex. VAT)

Buy now

6SE6440-2AB17-5AA1 6SE6 440-2AB17-5AA1

£339.33 (ex. VAT)

6ES7925-4BB00-0AA0

£107.93 (ex. VAT)

E/A-BUS 6DS1312-8BB

£1,053.66 (ex. VAT)

More about this product

Specification & Description

View now

Commonly Asked Questions

View now

Customer Reviews

View now

Specification & Description

Specification	Description
Part Number	3TH4394-0BB4
Alternative Part Number	3TH43940BB4
Manufacturer	Siemens
Product Type	Contactor Relay
Size of Contactor	0
Number of Contacts	5 NO (Normally Open) + 5 NC (Normally Closed)
Overlap	1 Overlap (O'LAP)
Terminal Type	Screw Terminal
Operating Voltage	DC 24V
Ambient Operating Temperature	-25 … +55 °C
Protection Class IP on the Front	IP20
Reference Code	K (according to DIN EN 61346-2)
Control Circuit Voltage Type	DC
Auxiliary Circuit Operating Current	10 A at 230 V, 6 A at 400 V (AC-15 Rated Value)
Identification Number and Letter	55 E, 1U
Mounting Type	Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Dimensions (Height x Width x Depth)	78 mm x 55 mm x 135 mm
Electrical Connection Type	Screw-type terminals for auxiliary and control circuit
B10 Value with High Demand Rate	1,000,000 (With 0.3 x Ie according to SN 31920)
T1 Value for Proof Test Interval	20 years (according to IEC 61508)
Protection Against Electrical Shock	Finger-safe

The Siemens 3TH4394-0BB4 is a meticulously engineered contactor relay that serves as a critical component in a wide range of industrial control systems. Designed to meet the stringent requirements of EN 50011, this relay features a configuration of 5 normally open (NO) and 5 normally closed (NC) contacts, along with a single overlapping contact, ensuring versatile integration into various circuit designs.

Constructed with a size 0 form factor, the 3TH4394-0BB4 is compact yet robust, making it suitable for space-conscious applications without compromising on performance. The relay operates with a DC control supply voltage rated at 24V, providing reliable switching and control for DC-operated circuits.

The device boasts an ambient operating temperature range of -25 to +55 degrees Celsius, allowing it to function effectively in diverse environmental conditions. With a protection class of IP20 on the front, it offers a degree of protection against solid objects, enhancing its durability in industrial settings.

For ease of installation, the 3TH4394-0BB4 features screw-type terminals for secure electrical connections, as well as screw and snap-on mounting options for a 35mm standard mounting rail in accordance with DIN EN 50022. Its dimensions, with a height of 78mm, width of 55mm, and depth of 135mm, make it a practical choice for integration into control panels and equipment.

The relay's auxiliary circuit is capable of handling operating currents of 10A at 230V and 6A at 400V in AC-15 applications, demonstrating its suitability for controlling a variety of loads. The 3TH4394-0BB4 is also designed with safety in mind, featuring finger-safe protection against electrical shock.

This Siemens contactor relay is a reliable and efficient solution for those seeking a high-quality component for their control systems, offering both functionality and flexibility in a wide array of industrial applications.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

How do I create an account?

Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.

Peace of mind with every purchase

Dan

‘The ordering was fast and efficient, and everything arrived just as they said it would.’

Julien

‘Perfect quick delivery, good service.’

Thomas Roland Geaughan

‘Prompt and expert service. Ease of access to find the parts I needed.’

Irene

‘Fast delivery and prompt action.’

Muswalin

‘Good packing, quickly delivery and responsible.’

Ms. Mia

‘Quick response, good item, delivery on schedule.’

Kayden

‘Services is great.’

Irene

‘Fast delivery and prompt action.’

Muswalin

‘Good packing, quickly delivery and responsible.’

Advance Lifts

‘Great customer service , we needed some assistance quickly and received it.’

Dan

‘The ordering was fast and efficient, and everything arrived just as they said it would.’

Irene

‘Fast delivery and prompt action.’

Nathalie Jolicoeur

‘Great service. Thank you.’

Learn more about Marvo

Our service to you

Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.

No-Risk Returns, Guaranteed: Return your parts anytime for a full refund. Our hassle-free return policy ensures you’re never stuck with something you don’t need.

Clear Pricing with No Hidden Fees: What you see is what you pay, transparent pricing with no extra costs, ever. Rest assured, all taxes and fees are already included in your final price.

Rock-Solid Reliability at a Fraction of the Cost: Get pre-owned electronic parts that are fully tested for peak performance, saving you money without compromising on quality, backed by a comprehensive warranty.

Frequently Asked Questions

What type of device is this Siemens contactor relay?

The Siemens contactor relay is an auxiliary contactor designed for various control applications. It features 5 normally open (NO) and 5 normally closed (NC) contacts, with a screw terminal connection and operates on a 24 V DC control supply voltage.

Can this contactor relay be used in extreme temperatures?

Yes, the contactor relay is designed to operate within an ambient temperature range of -25 to +55 degrees Celsius, making it suitable for use in a variety of environmental conditions.

What is the protection class of the front side of the contactor relay?

The front side of the contactor relay has a protection class of IP20, indicating a basic level of protection against solid objects.

What are the dimensions of this contactor relay?

The contactor relay has a height of 78 mm, a width of 55 mm, and a depth of 135 mm.

How is the contactor relay mounted?

The contactor relay can be mounted using screws and can also be snapped onto a 35 mm standard mounting rail according to DIN EN 50022.

What is the rated operational current for this contactor relay at AC-15?

At AC-15, the contactor relay has a rated operational current of 10 A at 230 V and 6 A at 400 V.

What type of electrical connection does the contactor relay have for its auxiliary and control circuit?

The contactor relay utilises screw-type terminals for its auxiliary and control circuit electrical connections.

What is the B10 value for this contactor relay?

The B10 value for the contactor relay is 1,000,000 with a high demand rate according to SN 31920, assuming 0.3 times the rated operational current (Ie).

What is the T1 value for the proof test interval or service life of the contactor relay?

The T1 value for the proof test interval or service life of the contactor relay is 20 years, in accordance with IEC 61508.

Is the contactor relay finger-safe?

Yes, the design of the contactor relay provides protection against electrical shock, making it finger-safe.

Part conditions explained

We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

The Smart Part

Factories implementing AI-driven systems, highlighting the benefits of investing in artificial intelligence.## Should You Be Investing in Artificial Intelligence?

Should you be investing in artificial intelligence?

Marvo

Just a few years back, investing in AI only existed in the realm of science fiction. It was a futuristic technology that could be found solely in books or in Hollywood films. Fast forward to todays world and AI is rapidly becoming an integral part of our daily lives. It is reshaping how we work, communicate and solve complex problems.

4 min read

December 13, 2024

The top 10 ways to improve your supply chain strategy

10 advanced techniques to improve your supply chain strategy

Marvo

A robust supply chain strategy is crucial in today’s interconnected and rapidly evolving global economy. Problems that businesses face include shifting consumer preferences, interruptions in supply, and an increasing focus on sustainability. This article delves into ten cutting-edge methods, in order to keep supply chain tactics robust, efficient, and competitive.

7 min read

November 22, 2024

What is supply chain optimisation?

Marvo

Supply chain optimisation is the key to navigating today's rapidly evolving manufacturing landscape. By improving their operations and logistics, businesses can reach greater levels of efficiency. This refinement also leads to strategic agility. As a result, companies position themselves to adapt to new challenges and seize opportunities.

6 min read

November 1, 2024

See all articles