The key features and benefits of the 3RB20 and 3RB21 electronic overload relays are detailed in "Overload relay" > "Overview" in PDF-form.

Overview of the energy management process

Advantages through energy efficiency

We offer you a unique portfolio for industrial energy management, using an energy management system that helps to optimally define your energy needs. We split up our industrial energy management into three phases – identify, evaluate, and realize – and we support you with the appropriate hardware and software solutions in every process phase.

The innovative products of the SIRIUS industrial controls portfolio can also make a major contribution to the energy efficiency of a plant (see http://www.siemens.com/sirius/energysaving).

3RB22 and 3RB23 electronic overload relays contribute to energy efficiency throughout the plant as follows:

• Reduced inherent power loss
• Less heating of the control cabinet
• Smaller control cabinet air conditioners can be used