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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1025-3BB40 |
| Alternative Part Number | 3RT10253BB40 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Contact Configuration | 3NO (3 Normally Open contacts) |
| Rated Current | 40 A |
| Rated Operational Power | 23 kW (at 400 V AC-3) |
| Control Voltage | 24 V DC |
| Size | S0 |
| Connection Type | Cage Clamp Connection |
| Protection Class | IP20; IP00 |
| Ambient Operating Temperature | -25 … +60 °C |
| Mechanical Operating Cycles | 10,000,000 typical for contactor |
| Installation Altitude | Up to 2,000 m above sea level |
| Degree of Pollution | 3 |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Dimensions (H x W x D) | 85 mm x 45 mm x 100 mm |
| Conductor Cross-section | Main contacts: max. 2x 10 mm²; Auxiliary contacts: 2x (0.25 ... 2.5 mm²) |
| Certifications/Approvals | General Product Approval, Declaration of Conformity, and others as per relevant standards |
The Siemens 3RT1025-3BB40 is a robust and reliable power contactor, designed to handle a wide range of industrial applications. This part is characterised by its 3NO (Normally Open) contacts, a 40 A operating current, and a control voltage of 24 V dc. With a power rating of 23 kW, it is capable of managing substantial loads, making it a versatile choice for various settings.
The 3RT1025-3BB40 belongs to the S0 size category and features a DC control system. It is designed with IP20 and IP00 protection classes, ensuring it can withstand challenging environments. This power contactor is part of the renowned Siemens SIRIUS product range, known for its high-quality and performance.
One of the key features of this part is its mechanical service life, with a typical switching cycle of 10 million for the contactor and 5 million for the contactor with added electronics-compatible auxiliary switch block. This ensures longevity and reduces the need for frequent replacements, offering excellent value for money.
Please note that this part is a phased-out product, and its preferred successor is the SIRIUS 3RT2, specifically the 3RT2025-2BB40 model. However, the 3RT1025-3BB40 remains a popular choice due to its proven performance and reliability.
Whether you're operating in the manufacturing, energy, or automation sectors, the Siemens 3RT1025-3BB40 power contactor is a solid choice for efficient and reliable power control.
Commonly Asked Questions
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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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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.
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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 is the main function of this power contactor?
The Siemens 3RT1025-3BB40 is a power contactor primarily used for switching a power circuit.
What are the key specifications of this power contactor?
This power contactor has a 3NO (Normally Open) configuration, a rated operating current of 40 A, a rated operating power of 23 kW, and a control voltage of 24 V dc. It belongs to the S0 size category and has an IP20;IP00 protection rating.
What is the significance of the 3NO configuration in this power contactor?
3NO means that the Siemens 3RT1025-3BB40 has three Normally Open contacts. When the contactor is not energised, the contacts are open and no current can flow through them. When the contactor is energised, the contacts close, allowing current to flow.
What does the IP rating of this power contactor mean?
The IP rating (Ingress Protection rating) of the Siemens 3RT1025-3BB40 is IP20;IP00. This means that the front of the contactor has protection against solid objects larger than 12.5 mm (like fingers), but it's not protected against liquids. The terminal of the contactor does not have any special protection.
What is the control voltage of this power contactor?
The control voltage of the Siemens 3RT1025-3BB40 is 24 V dc. This is the voltage required to energise the contactor and close the contacts.
What is the rated operating current and power of this power contactor?
The Siemens 3RT1025-3BB40 has a rated operating current of 40 A and a rated operating power of 23 kW.
What size category does this power contactor belong to?
The Siemens 3RT1025-3BB40 belongs to the S0 size category.
What is the mechanical service life of this power contactor?
The Siemens 3RT1025-3BB40 has a typical mechanical service life of 10 million switching cycles.
What is the ambient temperature range for operating this power contactor?
The Siemens 3RT1025-3BB40 can operate in ambient temperatures ranging from -25 to +60 degrees Celsius.
Part conditions explained
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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.
