Quick and efficient temperature rise verification in the control panel complying to the standards

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  • A reduction in temperature by 5°C in the control panel extends service life. Therefore temperature rise verification is essential and requested by the standard IEC 61439-1.

On the safe side

Thermal optimization made easy

Excessive temperatures can significantly reduce the service life of components in control panels. Therefore temperature rise verification is essential and requested by the standard IEC 61439-1. We provide you with comprehensive support.

Discover all the information on industrial control panel engineering and standards

Do you want to benefit from expert knowledge for your control panel? Learn more in technical documents and manuals, brochures and publications, visit webinars or take advantage of our offering of electrical engineering software tools.

Solid foundation: readily available power loss data

The power loss data of components in a control panel are important values that are required for an optimal design. This information is used to determine the size of the panel and the necessary cooling. The data also makes it possible to conduct a risk analysis when it comes to temperature rise.

Siemens provides you with a summary of the power loss data of devices in a clear Excel table as well as in the free SIMARIS therm calculation tool. This helps to save time at temperature rise verification.

Benefit from our standards expertise and our products relating to heat in control panels.

Temperature rise verification in four steps

The free SIMARIS therm tool contains nearly 30,000 verified power loss data points from Siemens enclosures and devices. In addition to the products from Siemens, SIMARIS therm enables you to include devices and enclosures from other manufacturers in your calculation.

What's in it for you?

  • Fast selection of predefined enclosures and devices . Easy and efficient development of additional empty enclosures and devices
  • Verification of switchgear and controlgear assemblies complying to saved power loss data
  • Creation of a certification as proof of temperature rise calculation in accordance with IEC 61439-1, supplement 2; IEC 60204-1; etc. 
  • Free of charge

SIVACON 8MR system air conditioning

SIVACON 8MR system air conditioning ensures the smooth operation of electrical and electronic devices installed in the panel, even under harsh environmental conditions. Among other things, it prevents condensation and frost damage and protects against the malfunctions that might result. The portfolio ranges from filter fans, cooling devices and heaters to thermostats.

Energy-efficient components

Our innovative components for control panels are designed for maximum energy efficiency and, as a result, have a reduced power loss. They save energy costs while 

also reducing the waste heat that arises in the control panel. 

To enable rapid calculation of temperature rise in compliance to standards, the data of Siemens components is stored in the free SIMARIS therm tool.

Standards and guidelines

IEC 61439-1/2

Since the end of the transition period from the IEC-60439 to the IEC-61439 series, new regulations apply to the temperature rise limits of low-voltage switchgear and controlgear assemblies. According to the DIN EN (IEC) 61439 standard, the temperature rise limits have to be provided and documented in a design verification. This can be the result of your own calculations – or you can simply use the calculation result supplied to you by the free SIMARIS therm tool.

Low Voltage Directive 2014/35/EU

The European Low Voltage Directive specifies a risk analysis and risk assessment within the framework of the conformity procedure. In the CENELEC 32 Guide, appendix A, this includes the effects of temperature on materials and components.