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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2025-1BB44 |
| Alternative Part Number | 3RT20251BB44 |
| Manufacturer | Siemens |
| Rated Operational Voltage | AC-3 400 V |
| Control Circuit Voltage | 24 V DC |
| Rated Operational Current | AC-3: 17 A |
| Power Rating | 7.5 kW |
| Number of Poles | 3 Poles |
| Auxiliary Contacts | 2 NO + 2 NC |
| Terminal Type | Screw Terminal |
| Size | S0 |
| Degree of Protection | IP20 on the front |
| Ambient Temperature Range | -25 … +60 °C |
| Mechanical Service Life | Typical 10,000,000 switching cycles |
| Insulation Voltage | Rated at 690 V |
| Installation Altitude | Maximum 2,000 m above sea level |
| Shock Resistance | At DC 10g / 5 ms, 7.5g / 10 ms |
| Impulse Voltage Resistance | Rated value 6 kV |
| Protection Against Electric Shock | Finger-safe |
| Degree of Pollution | 3 |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
The Siemens 3RT2025-1BB44 is a robust power contactor designed to handle a variety of applications within industrial environments. This contactor is engineered to control motors and loads efficiently, with a rated operational current of 40 A and an AC-3 power rating of 7.5 kW at 400 V. It features a three-pole design and is equipped with 24 V DC coil voltage, making it suitable for DC control systems.
The unit comes with integrated auxiliary contacts, offering 2 normally open (NO) and 2 normally closed (NC) contacts, which are useful for implementing control logic circuits. The screw terminal connection ensures a secure and reliable installation. With a size S0 footprint, it is compact enough to fit in standard control cabinets while providing ample power handling capabilities.
Designed with a focus on durability, the Siemens 3RT2025-1BB44 boasts a mechanical service life of millions of operating cycles, ensuring long-term reliability in demanding industrial settings. Its construction adheres to a pollution degree of 3 and offers a protection class of IP20 on the front, safeguarding the device from solid objects and facilitating its use in various environmental conditions.
This contactor is a preferred choice for professionals seeking a high-quality solution for motor control and switching applications, offering both performance and reliability in a compact package.
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.
Read more...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.
Read more...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.
Read more...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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Read more...Peace of mind with every purchase
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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 type of contactor is this?
This is a power contactor designed for switching an electrical power circuit, similar to a relay but with higher current ratings, and is used for controlling electric motors and lighting loads.
What are the voltage specifications for this contactor?
The contactor operates with a control supply voltage of 24 V DC and is suitable for switching motors up to 7.5 kW at 400 V in AC-3 applications.
How many poles does this contactor have?
The contactor is a 3-pole device, which means it can switch three phases simultaneously.
What are the auxiliary contact configurations?
This contactor comes with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts.
Can this contactor be used in safety-related applications?
While the contactor does have a mirror contact feature according to IEC 60947-4-1, it is not positively driven according to IEC 60947-5-1, which should be considered when planning for safety-related applications.
What is the size of this contactor?
The contactor is of size S0, which is a standard size classification for Siemens contactors.
What is the mechanical service life of this contactor?
The mechanical operating cycles as operating time of the contactor is typically around 10 million cycles.
What type of terminal does this contactor have?
This contactor is equipped with screw terminals for secure and reliable connections.
What is the rated operational current for this contactor?
The rated operational current for this contactor in AC-3 usage is 17 A.
What certifications does this contactor hold?
The contactor has general product approvals and conforms to standards, which may include but are not limited to EMC and KC certifications.
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.
