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Siemens 3RT1044-1AC20

Name: 3RT1044-1AC20
Brand: Siemens
SKU: 3RT1044-1AC20
Price: 87.99 GBP
Availability: InStock

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£87.99 (ex. VAT)

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Marvo Stock ID MV-7D5Z

HS Code 85364900

SKU 3RT1044-1AC20

Condition Used

Warranty 12 months

Weight (kg) 2.00

Length (mm) 320.00

Width (mm) 250.00

Height (mm) 250.00

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Specification & Description

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Commonly Asked Questions

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Customer Reviews

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Specification & Description

Specification	Description
Part Number	3RT1044-1AC20
Alternative Part Number	3RT10441AC20
Manufacturer	Siemens
Product Type	Power Contactor
Poles	3 Pole
Contact Configuration	3P-3NO (3 Main Contacts, Normally Open)
Rated Operational Voltage	400 V
Rated Current	100 A
Power Rating	30 kW
Contactor Size	Size S3
Insulation Voltage	Rated at 1,000 V
Degree of Pollution	3
Surge Voltage Resistance	Rated value 6 kV
Maximum Operating Altitude	2,000 m above sea level
Ambient Operating Temperature	-25 … +60 °C
Mechanical Operating Cycles	10,000,000 typical for contactor
Number of NC Contacts	0 for main contacts
Number of NO Contacts	3 for main contacts
Operating Current at AC-1	100 A at 400 V (40 °C ambient temperature)
Operating Current at AC-3	65 A at 400 V
Operating Current at AC-4	55 A at 400 V
Control Circuit Voltage Type	AC
Control Supply Voltage	24 V AC at 50/60 Hz
Apparent Pull-in Power	247 V·A for AC
Apparent Holding Power	25 V·A for AC
Protection Class IP	IP20 on the front
Connection Type	Screw Connection
Commodity Code	853649

The Siemens 3RT1044-1AC20 is a robust power contactor designed to handle high switching capacities efficiently and reliably. This three-pole contactor is part of the SIRIUS product range and is engineered to facilitate the control of motor loads or power circuits in a variety of industrial applications.

With a rated operational current of 100 A at AC-1 and 65 A at AC-3, this contactor can manage AC-3 motor loads up to 30 kW at 400 V, making it suitable for a wide range of demanding tasks. The contactor operates with a control supply voltage of 24 V AC at 50/60 Hz and features screw connection terminals for secure and straightforward installation.

The device is designed with a size S3 footprint, ensuring it can be accommodated within standard industrial control panels without occupying excessive space. It also boasts an impressive mechanical service life, capable of up to 10 million operating cycles, which speaks to its durability and the potential for long-term operation.

The 3RT1044-1AC20 is constructed to maintain performance within a broad range of ambient temperatures, from -25°C to +60°C, and at installation altitudes of up to 2000 metres above sea level, ensuring reliability across various environmental conditions.

This contactor is a testament to Siemens' commitment to quality and performance in industrial control components, offering a dependable solution for those seeking to enhance their system's efficiency and operational longevity.

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.

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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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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 are the main characteristics of this power contactor?

This power contactor is a 3-pole device with 3 normally open (NO) contacts, suitable for AC-3 applications up to 30 kW at 400 V. It has a rated operating current of 65 A at AC-3 and 100 A at AC-1, with a control supply voltage of 24 V AC at 50/60 Hz. It's designed for screw terminal connections and is part of the SIRIUS product family.

Can this contactor be used for high-frequency switching applications?

The contactor is designed for a variety of applications but has a maximum operating frequency of 1000 operations per hour at AC-1, which may not be suitable for high-frequency switching. It's best to check the specific requirements of your application against the contactor's rated operating frequency.

What is the insulation voltage rating for this contactor?

The insulation voltage rating for this contactor is 1000 V, which is the rated value for ensuring safe operation under the specified conditions.

What is the size and mounting type for this contactor?

The contactor is of size S3 and can be mounted by screw and snap-on mounting onto 35 mm and 75 mm standard mounting rails. It allows for side-by-side mounting as well.

What are the ambient temperature limits for operating this contactor?

The contactor can operate within an ambient temperature range of -25 to +60 degrees Celsius, ensuring reliable performance across a wide range of environmental conditions.

What type of protection does the contactor offer?

The contactor offers a protection class of IP20 on the front, which means it is protected against solid objects larger than 12.5 mm but not against water. The terminal protection class is IP00.

How does the contactor handle short-circuit protection?

For short-circuit protection of the main circuit, a fuse with a gL/gG characteristic of 250 A for type of coordination 1 or 125 A for type of coordination 2 is required. For the auxiliary switch, a 10 A fuse is needed.

What is the mechanical service life of this contactor?

The mechanical service life of the 3RT1044-1AC20 contactor is typically 10 million operating cycles, which contributes to its durability and longevity in various applications.

Can this contactor be used with both AC and DC control circuits?

This contactor is designed for AC control circuits with a control supply voltage of 24 V AC at 50/60 Hz. It is not specified for DC control circuits.

What are the dimensions of this contactor?

The dimensions of the contactor are 70 mm in width, 146 mm in height, and 139 mm in depth, making it compact enough for installation in various industrial settings.

Part conditions explained

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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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