Siemens Unveils New Enclosed IEC Motor Controls for Industrial and Construction Applications


Tuesday, April 9, 2019 10:51 am EDT


Norcross, Ga.
  • Lower cost alternative to enclosed NEMA products
  • Customizable with factory and field modifications
  • RoHS-compliant

Siemens recently launched a new family of enclosed IEC motor controls that feature components from its SIRIUS modular system. Ideal for industrial and construction applications that use fans, pumps, or blowers, this new product line is pre-fabricated and ready to install. Units are customizable with factory and field modification options, making them flexible to use in multiple applications.

Available in a variety of sizes from standard to extra-large, Siemens’ enclosed IEC motor controls can be more easily tailored to specific applications to help ensure customers are paying for the right sized product. They also provide a low-cost alternative to enclosed NEMA products.

The new 3RE4 line of enclosed IEC motor controls include NEMA Type 1, 3, 3R, 4, 4X and 12 enclosures, with SIRIUS contactors and overload relays and SIRIUS ACT pilot devices. Starters are available with thermal or solid-state overload relays for single-or three-phase motors in reversing or non-reversing applications.

The SIRIUS line of solid-state overload relays is designed and calibrated to be used with IE2, IE3 and IE4 motors, providing less nuisance tripping due to their high inrush capabilities. The wide range of overload relay settings also allows for inventory reductions.

The controllers are UL-motor horsepower rated, from fractional up to 60 Hp at 575 V. In addition, the devices are also RoHS compliant, manufactured in accordance with environmental guidelines and containing eco-friendly and reusable materials. Constructed with genuine metal, these new enclosed switching and protection devices have been extreme-element tested to ensure reliability for critical operations.

To learn more about Siemens’ enclosed IEC motor controls, please visit


About Siemens

Siemens Smart Infrastructure (SI) is shaping the market for intelligent, adaptive infrastructure for today and the future. It addresses the pressing challenges of urbanization and climate change by connecting energy systems, buildings and industries. SI provides customers with a comprehensive end-to-end portfolio from a single source – with products, systems, solutions and services from the point of power generation all the way to consumption. With an increasingly digitalized ecosystem, it helps customers thrive and communities progress while contributing toward protecting the planet. SI creates environments that care. With around 71,000 employees worldwide, Siemens Smart Infrastructure has its global headquarters in Zug, Switzerland, and its U.S. corporate headquarters in Buffalo Grove, Illinois, USA.

Siemens Corporation is a U.S. subsidiary of Siemens AG, a global powerhouse focusing on the areas of power generation and distribution, intelligent infrastructure for buildings and distributed energy systems, and automation and digitalization in the process and manufacturing industries. Through the separately managed company Siemens Mobility, a leading supplier of smart mobility solutions for rail and road transport, Siemens is shaping the world market for passenger and freight services. Due to its majority stakes in the publicly listed companies Siemens Healthineers AG and Siemens Gamesa Renewable Energy, Siemens is also a world-leading supplier of medical technology and digital healthcare services as well as environmentally friendly solutions for onshore and offshore wind power generation. For more than 160 years, the company has innovated and invented technologies to support American industry spanning manufacturing, energy, healthcare and infrastructure. In fiscal 2018, Siemens USA reported revenue of $23.7 billion, including $5.0 billion in exports, and employs approximately 50,000 people throughout all 50 states and Puerto Rico.


Siemens Contact for Journalists               

Allison Britt