Siemens 3RT2025-1BB40

SIRIUS 3RT2025-1BB40 Power Contactor: Efficient and Durable Performance

The SIRIUS 3RT2025-1BB40 power contactor is a highly reliable and durable solution for various industrial applications designed to handle demanding electrical load requirements. It is a three-pole contactor with auxiliary contacts, built explicitly for AC-3 and AC-3e load ratings. With a rated operational current of 17 A at 400 V, it supports a wide range of equipment, including motors and other heavy-duty electrical devices, while offering superior operation and power loss management efficiency.

General Features and Specifications

The 3RT2025-1BB40 contactor is classified under size S0, making it a compact yet powerful solution for switching and controlling electrical circuits. The contactor features one normally open (NO) and one normally closed (NC) auxiliary contact, providing enhanced control options. It is equipped with screw terminals for secure and reliable electrical connections, simplifying installation and ensuring long-term stability. The power loss at rated current is minimal, with a value of 1.8 W for the entire contactor and 0.6 W per pole, optimizing energy usage.

Environmental and Mechanical Durability

This power contactor is built to withstand harsh environmental conditions. It operates within a wide temperature range, from -25°C to +60°C during operation, and can be stored between -55°C and +80°C. It is designed to endure a maximum installation altitude of 2,000 meters above sea level. The contractor is also highly resistant to environmental factors such as humidity, with a relative humidity tolerance of up to 95% at 55°C, by IEC 60068-2-30 standards.

The 3RT2025-1BB40's mechanical lifespan is impressive, with up to 10 million switching cycles under typical operating conditions. This robust endurance makes it a reliable choice for applications requiring frequent switching. Additionally, when combined with an electronically optimized auxiliary switch block, the contactor can achieve a lifespan of up to 5 million cycles.

Electrical Performance and Application

The 3RT2025-1BB40 power contactor can handle various operational currents and voltages, supporting AC circuits from 230 V to 690 V. It offers significant operational power at different voltages, with 7.5 kW available at 400 V under AC-3 conditions and up to 11 kW at 690 V. The contractor also delivers flexibility in controlling different types of electrical equipment, such as motors, with different operational currents and voltages.

At DC, the contactor supports various operational conditions, handling up to 35 A at 24 V with single paths and lower current ratings at higher voltages. These capabilities allow for extensive use across industrial applications, from motor control to circuit protection, and contribute to its broad appeal in various sectors.

Auxiliary Circuit and Control Features

The 3RT2025-1BB40's auxiliary circuit includes one NO and one NC contact, both of which handle operational currents up to 10 A under AC-12 and AC-15 conditions. These auxiliary contacts ensure the power contactor can be integrated into more complex systems with greater flexibility. The control circuit operates at a 24 V DC supply, with quick opening and closing delays for precise control.

Environmental Impact and Sustainability

The environmental footprint of the 3RT2025-1BB40 is considered in its design, with an Environmental Product Declaration (EPD) available to highlight the product's sustainability credentials. The product's total global warming potential (GWP) is 221 kg CO2 equivalent, with the majority of the environmental impact occurring during its operational phase. After its useful life, the contactor offers a reduced GWP of -0.639 kg, demonstrating a commitment to eco-friendly manufacturing and recycling.

Frequently Asked Questions (FAQ) for the Siemens SIRIUS 3RT2025-1BB40 Power Contactor.

1. What is the primary function of the Siemens 3RT2025-1BB40 power contactor?

The Siemens 3RT2025-1BB40 is a 3-pole power contactor designed for controlling AC motors in industrial applications. It switches electrical circuits and provides reliable control of motor-driven equipment, typically in AC-3 or AC-3e applications. It can handle up to 17 A of operational current at 400 V in AC-3 mode and offers auxiliary contacts for additional control functionality.

2. What are the key technical specifications of the 3RT2025-1BB40 power contactor?

This contactor features:

• Current Rating: 17 A at AC-3 (400 V).
• Rated Voltage: 690 V AC (maximum operational voltage).
• Size: S0 (compact size for space-saving installation).
• Auxiliary Contacts: 1 NO (normally open) and 1 NC (normally closed).
• Operating Power: 7.5 kW at 400 V for AC-3 applications.
• Control Voltage: 24 V DC with a coil closing and holding power of 5.9 W.
• Operating Temperature: Ranges from -25 °C to +60 °C during operation.

3. What is the mechanical lifespan of the 3RT2025-1BB40?

The 3RT2025-1BB40 contactor has a typical mechanical service life of 10 million operating cycles, ensuring durability and long-lasting performance in industrial environments.

4. What environmental conditions are suitable for installing the Siemens 3RT2025-1BB40?

The contactor is designed for installation at altitudes up to 2,000 meters above sea level and can operate in temperatures between -25°C and +60°C. It can also handle high humidity conditions, with a maximum relative humidity of 95% at 55°C.

5. Can the 3RT2025-1BB40 be used for both AC and DC applications?

This power contactor is versatile and supports AC and DC control circuits. It operates with various voltages, including 24 V DC for the control circuit, and is rated for use with DC voltages from 24 V to 600 V.

6. What type of protection is required for the Siemens 3RT2025-1BB40 power contactor?

The Siemens 3RT2025-1BB40 requires short-circuit protection for its primary circuit. To coordinate protection, a 63 A gG-type fuse (690 V, 100 kA rating) is recommended to protect the contactor from short-circuit events.

7. Is there any special consideration for the auxiliary contacts?

The Siemens 3RT2025-1BB40's auxiliary contacts are rated for operational current at various voltages. For example, at 230 V AC, the operational current is 10 A, while at 600 V DC, it is 0.15 A. These auxiliary contacts have high contact reliability, with a fault rate of 1 faulty switch per 100 million cycles at 17 V, one mA.

8. What are the environmental footprint details of this contactor?

The Siemens 3RT2025-1BB40 has an Environmental Product Declaration (EPD). Its global warming potential (GWP) is 221 kg CO2 equivalent, with 2.65 kg CO2 equivalent during manufacturing and 219 kg CO2 equivalent during operation. After the end of life, the product has a GWP of -0.639 kg CO2 equivalent.

9. What is the typical application for the 3RT2025-1BB40?

This contactor is commonly used in industrial automation systems for controlling motor-driven equipment, including fans, pumps, compressors, and conveyors. It is ideal for applications that require a durable and reliable switching solution for motors and other high-power machinery.

10. What certifications and standards does the Siemens 3RT2025-1BB40 comply with?

The Siemens 3RT2025-1BB40 complies with international standards, including IEC 60947-1, for electrical installations and is rated according to UL/CSA specifications for use in North America. It offers reliable performance and safety for industrial applications.

Siemens products are manufactured in Germany and are designed for Automotive, aerospace, power generation, and electronics usage. They come with a 2-year warranty from MRO Electric. We also carry Contactors from other manufacturers such as FANUC and Yaskawa.

Contact Us Today For More Information About Siemens Products

Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at sales@mroelectric.com, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 3RT2025-1BB40, take a look at more from our Contactors line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 3RT2025-1BB40 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.