Gebr. Heller Maschinenfabrik GmbH

Application report: Standards and end-customer-compliant protection


Foresight spanning decades. Focus on the future - this is the motto of the HELLER company, which was founded in 1894 in Nürtingen as a small craftsman’s workshop. Today, the globally active group of companies develops and produces state-of-the-art CNC machine tools and manufacturing systems for machining operations. HELLER combines the tradition and experience of a medium-sized family-owned company with the integrated solution-based approach of a global player. Read more...


“The E-T-A products used impress with their easy handling and adapt individually to our applications".

Dipl. Ing. (FH) Hans Stäbler, R&D Group Manager, Gebr. Heller Maschinenfabrik GmbH

More than just machine tools

HELLER stands for state-of-the-art CNC machine tools and manufacturing systems in the field of machining operations. The wide HELLER product range includes 4- and 5-axis machining centres; milling-turning machining centres, custom and process machines, coating modules, machines for crankshaft and camshaft machining.

Modularity of the REX system

The modularity of the REX system allows specific adaptation of the protection to the respective application without additional accessories. This offers HELLER’s design engineers important additional scope and saves both circuit protectors and space.

The fixed current ratings of the E-T-A circuit protectors meet the requirements of the Machinery Directive. At the same time, this also meets the needs of many of Heller’s end customers. Fixed current values prevent unintentional adjustment of the current rating. In this way, unacceptable heating of cables and thus damage to the machine can be consistently ruled out as early as the design phase.

All benefits at a glance

  • Flexible and space-saving application due to modular and accessory-free design of the modules
  • Standard- and end-customer-compliant protection through fixed current ratings

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