Siemens 3RW4074-6BB34

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 Breakers from other manufacturers such as FANUC and Yaskawa.

SIRIUS 3RW40746BB34 

The 3RW40746BB34 is a powerful and versatile soft starter designed as part of the SIRIUS product line by Siemens. This soft starter is equipped with various advanced features and functions that make it an essential component in motor control applications. Its integrated bypass contact system, along with thyristors, enhances its efficiency and reliability.

Features

One of the standout features of the 3RW40746BB34 is its intrinsic device protection. This ensures that the soft starter itself remains safeguarded against potential faults or malfunctions, thereby contributing to the overall durability of the system. Additionally, motor overload protection is a critical function that prevents excessive current from damaging the motor during startup, ensuring a longer lifespan for both the motor and the soft starter.

Capabilities

The soft starter's external reset capability adds to its user-friendliness, allowing for easy reconfiguration and adjustments. The adjustable current limitation feature further enhances its versatility, making it compatible with a wide range of motor types and sizes. However, it's worth noting that this model does not offer the evaluation of thermistor motor protection, which may be a consideration in specific applications.

Operation

The 3RW40746BB34 demonstrates its flexibility with its compatibility across various operating frequencies, rated voltages, and load conditions. Its wide operating voltage range (200V to 460V) and adjustable motor current for motor overload protection (minimum rated value of 130A) cater to diverse motor setups. The minimum load requirement of 20% ensures that the soft starter remains effective even during partial load conditions.

Performance

In terms of power electronics, the soft starter exhibits remarkable performance. It can handle substantial mechanical power outputs for three-phase motors, reaching up to 160,000 W at 400V and 40°C. This capability makes it suitable for driving high-power motors commonly found in industrial applications.

Specifications

The control circuit and supply voltage specifications of the 3RW40746BB34 contribute to its reliability and ease of use. The control supply voltage of 115V at both 50Hz and 60Hz ensures consistent performance. The fault signal display version features a red indicator, enhancing the device's ability to communicate its status to operators.

Design

From a mechanical standpoint, the soft starter is designed for convenience and efficiency. Its compact size (S12) and adaptable mounting options allow for seamless integration into various setups. The required spacing for side-by-side mounting ensures proper ventilation and heat dissipation.

Options

The 3RW40746BB34 also boasts a comprehensive set of connection options, accommodating various conductor cross-sections and types. Its compatibility with different conductor sizes and specifications makes it suitable for a wide range of electrical configurations.

Environmental Consideration

Regarding environmental conditions, the soft starter can operate in a broad temperature range (-25°C to +60°C) and handle altitudes up to 5,000 meters. Its IP00 protection class indicates that it is not inherently protected against solids or liquids but is designed for installation within enclosures.

In conclusion, the 3RW40746BB34 soft starter from Siemens' SIRIUS product line is a highly capable and adaptable motor control device. With its integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, and adjustable current limitation, it addresses the needs of various industrial applications. Its impressive mechanical power output, control circuit features, and robust construction make it a reliable and efficient choice for motor control and protection.

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 3RW4074-6BB34, take a look at more from our Breakers 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 3RW4074-6BB34 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.