Siemens 3RH2131-2BB40

Siemens 3RH2131-2BB40 Contactor – Compact, Reliable Motor Control

The Siemens 3RH2131-2BB40 is a compact control contactor designed for reliable switching of motors and control circuits in industrial and commercial automation systems. Part of Siemens' SIRIUS control product family, this contactor combines durable construction, efficient coil operation, and a space-saving design—making it an ideal solution for control panels where reliability and panel space are critical.

Key Features of the 3RH2131-2BB40

Engineered for consistent performance and easy integration, the 3RH2131-2BB40 offers dependable operation in demanding environments while maintaining a compact footprint.

-Rated Operational Current: 10 A (AC-3 duty, depending on application)

-Coil Voltage: 24 V DC, low-power consumption for energy efficiency

-Contact Configuration: 3 main power poles; 1 normally open (NO) + 1 normally closed (NC) auxiliary contact

-Compact Width: 45 mm, ideal for high-density control panels

-DIN Rail Mounting: Quick and secure installation in standard enclosures

-Front-Mounted Auxiliary Contacts: Simplifies wiring and system expansion

-Industrial-Grade Construction: Designed for long service life and frequent switching operations

3RH2131-2BB40 Industry Use Cases

The Siemens 3RH2131-2BB40 contactor is commonly used for switching motors and control circuits in a wide range of automation systems, including:

-Motor starters in manufacturing and assembly lines

-Control panels for HVAC equipment and building automation

-Conveyor and material-handling systems

-Pump and valve control in water and wastewater facilities

-Lighting and auxiliary control circuits

-Switchgear and power distribution panels

Industries that rely on this contactor include automotive manufacturing, food and beverage processing, pharmaceuticals, material handling, utilities, and commercial infrastructure.

Why Buy the 3RH2131-2BB40 from MRO Electric?

When you purchase the Siemens 3RH2131-2BB40 from MRO Electric, you receive genuine Siemens components backed by dependable service:

-Free Shipping on all qualifying orders under 20 lbs

-Complimentary 2-Year Warranty for added peace of mind

-Expert Technical Support for selection and integration questions

-Fast Order Fulfillment to minimize downtime

Upgrade Your Control System Today

The Siemens 3RH2131-2BB40 contactor delivers compact design, reliable switching performance, and long-term durability for industrial control applications. Order from MRO Electric today to take advantage of free shipping, extended warranty coverage, and expert support.

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

Contact Us Today For More Information About the 3RH2131-2BB40

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 3RH2131-2BB40, 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 3RH2131-2BB40 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.