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Siemens 3RT1044-1BB44

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3RT1044-1BB44
3RT1044-1BB44
3RT1044-1BB44
3RT1044-1BB44
3RT1044-1BB44
3RT1044-1BB44

Image shown may not reflect the final product

Marvo Stock ID MV-1HYB
HS Code 8536
SKU 3RT1044-1BB44
Condition Used
Warranty 12 months
Weight (kg) 4.00
Length (mm) 390.00
Width (mm) 300.00
Height (mm) 250.00

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Specification & Description

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Specification & Description

Specification Description
Part Number 3RT1044-1BB44
Alternative Part Number 3RT10441BB44
Manufacturer Siemens
Product Type Power Contactor
Contact Configuration 3 Normally Open (NO)
Rated Operational Current AC-1: 100 A at 400 V, AC-3: 65 A at 400 V
Control Voltage 24 V dc
Size S3
Connection Type Screw Connection
Number of Auxiliary Contacts 2 Normally Open (NO) + 2 Normally Closed (NC)
Insulation Voltage Rated value: 1,000 V
Degree of Pollution 3
Surge Voltage Resistance Rated value: 6 kV
Maximum Voltage for Safe Isolation 690 V according to EN 60947-1
Protection Class IP IP20 on the front
Ambient Temperature Operating: -25 … +60 °C
Mechanical Operating Cycles Contactor: 10,000,000 typical
Installation Altitude Maximum: 2,000 m above sea level
Dimensions (H x W x D) 146 mm x 70 mm x 201 mm (approximate)

The Siemens 3RT1044-1BB44 is a robust power contactor designed to handle high current applications with ease. This contactor is part of the SIRIUS product family, renowned for its reliability and performance in industrial environments. With a 3-pole configuration and a 24 V DC control supply voltage, it is well-suited for a variety of applications.

The 3RT1044-1BB44 features three normally open (NO) main contacts, ensuring efficient operation in AC-3 applications up to 65 A and 30 kW at 400 V. It also includes two normally open and two normally closed auxiliary contacts for additional circuit flexibility. The contactor is engineered to withstand challenging conditions, boasting an operational temperature range from -25°C to +60°C and an installation altitude of up to 2000 metres above sea level, making it a versatile choice for diverse settings.

Mechanical durability is a key strength of this contactor, with a mechanical service life of approximately 10 million switching cycles, ensuring longevity and reducing the need for frequent replacements. The screw terminal connection provides a secure and reliable means of installation, while the device's compact size, classified as size S3, allows for efficient use of space within control cabinets.

The 3RT1044-1BB44 is a phased-out product, and Siemens recommends the SIRIUS 3RT2 as its preferred successor. However, the enduring design and proven track record of the 3RT1044-1BB44 make it a valuable component for maintenance, repair, and operations (MRO) needs, as well as for systems where compatibility with existing equipment is essential.

This power contactor is an excellent choice for those seeking a dependable solution for controlling motors and loads in industrial automation, manufacturing, and other high-demand applications where consistent performance is critical.

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.

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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.

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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.

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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.

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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.

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Frequently Asked Questions

What type of contactor is this Siemens power contactor?

This Siemens power contactor is a 3-pole contactor with 3 normally open (NO) main contacts, designed for AC-3 applications up to 30 kW at 400 V.

Can this contactor be used for DC applications?

Yes, the contactor is suitable for DC applications and comes with a control supply voltage of 24 V DC.

What is the rated operating current of this contactor at AC-1 and AC-3?

At AC-1, the rated operating current is 100 A at 400 V with a 40 °C ambient temperature. At AC-3, the rated operating current is 65 A at 400 V.

What is the mechanical service life of the contactor?

The mechanical service life of the contactor is typically 10 million switching cycles.

What is the maximum installation altitude for this contactor?

The maximum installation altitude for the contactor is 2,000 metres above sea level.

What are the ambient temperature limits for operating this contactor?

The contactor can operate within an ambient temperature range of -25 to +60 °C.

What is the insulation voltage rating of this contactor?

The insulation voltage rating of the contactor is 1,000 V.

What are the dimensions of this contactor for installation purposes?

The contactor has a width of 70 mm, a height of 146 mm, and a depth of 201 mm.

How can this contactor be mounted?

The contactor can be mounted using screw and snap-on mounting onto 35 mm and 75 mm standard mounting rails.

What is the protection class of the contactor?

The protection class on the front of the contactor is IP20.

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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.

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