Siemens Industry Online Support
Siemens AG
Entry type: FAQ Entry ID: 53817677, Entry date: 10/14/2011


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  • Associated product(s)
UL stands for Underwriters Laboratories, an independent US test organization. UL Approval is often a requirement for equipment in use in the USA and other countries.

How can I obtain the UL File Number?

At present, the UL File Number is granted at www.ul.com

Directly on the following search page:


Under keyword, enter the first seven places of the order number and an * at the end.

Then click on "Search". 

Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit