Siemens expands ratings of arc-resistant SIMOVAC™ medium-voltage controller, improving safety and operation of critical electrical infrastructure technology

Wendell, NC | Feb 14, 2013

  • New 63 kA-rated SIMOVAC-AR™ controller rated for both short-circuit and internal arc-fault operations making it one of the industry’s most advanced medium-voltage controllers

  • Better protects operators and personnel against potentially dangerous arc-flash events

  • Extended ratings allow for most cost-effective and compact lineup of SIMOVAC-AR controllers and GM-SG-AR switchgear

Siemens has added the extended 63kA rating to SIMOVAC-AR™, the industry’s first medium-voltage controller fully rated for 63 kA applications. The system features technology that provides greater safety and protection for personnel against arc-flash events, the rapid release of energy that can occur in electrical systems and potentially harm personnel. The technology has been designed to be compact, allowing for significant space reduction in a power equipment center or electrical room.


“We understand that safety is paramount when operating electrical equipment and that is why we’ve designed the industry’s most advanced medium-voltage controller with a rating up to 63 kA and available in arc-resistant construction,” said Brian Dula, vice president of Siemens Medium Voltage & Systems. “Our technology will save space and reduce operating costs, but, most importantly, will protect against dangerous arc-flash events and keep electrical operators safe.”


The 63 kA SIMOVAC-AR controllers are fully rated for both short-circuit withstand and internal arc resistance, making the technology one of the most advanced and high-performing medium-voltage controllers in the industry. The technology has been tested for arc-resistance to IEEE standards and is available with UL or cUL listings. The SIMOVAC-AR also offers generous low-voltage compartment space to accommodate wiring for complex control schemes. Users can finally have maximum protection and performance in a close-coupled lineup of medium-voltage metal-clad switchgear and controllers, arc-resistant or non-resistant rated up to 63 kA.


This press release and a press picture / press pictures/ further material is available at


For further information on Siemens medium-voltage controllers, please see


Contact for journalists

Annie Satow, Siemens

Phone: 202-316-0219; E-mail:



Siemens Corporation is a U.S. subsidiary of Siemens AG, a global powerhouse focusing on the areas of electrification, automation and digitalization. One of the world’s largest producers of energy-efficient, resource-saving technologies, Siemens is a leading supplier of systems for power generation and transmission as well as medical diagnosis. With approximately 348,000 employees in more than 190 countries, Siemens reported worldwide revenue of $86.2 billion in fiscal 2015. Siemens in the USA reported revenue of $22.4 billion, including $5.5 billion in exports, and employs approximately 50,000 people throughout all 50 states and Puerto Rico.


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