Circuit Protection

The American standard UL 248 describes a wide variety of different fuse types for various applications according to NEC. Eaton Bussmann Series fuses are also very important for increasing the short circuit levels of the entire system - the so-called SCCR - by means of a high short-circuit current limit. In the Eaton Bussmann manual Fuselogy you will find important information on the right selection and dimensioning. The current version also includes information to help users comply with NEC 2017 through the use of fuses.

Are your products fulfilling the requirements of the new NEC2017 code? Will the SCCR of your machine be sufficient enough to achieve acceptance by local authorities? This executive summary explains just why you shouldn't miss out on downloading our white paper.

This short video page addresses regularly important aspects of the North American regulations which may influence the acceptance of your machine or control panel. Each of these videos includes a link to a related white paper that explains the topic in more detail.

What are the differences between a control panel for the North American market and one for the IEC world? Where does the Feeder Circuit end and the Branch Circuit begin? How do the components used in these parts differ and what has to be considered when choosing them? This comprehensive white paper describes the approach required to successfully design a control panel according to the North American standard, right from the outset.

The differences between IEC and North American standards for control panel can be seen in different requirements for accessories. An example are rotary handles for main switches that can only be operated by the intentional switching of an additional handle when the door is opened.

An example of the differences between North America and IEC is article 430 of the NEC, according to which a motor circuit must fulfil at least four functions. Read the white paper about the special considerations governing the application of Manual Motor Controllers and Motor Starters in North America.

While in Europe there are earthed three-phase networks almost everywhere, in North America there are a variety of different network forms and voltages. The knowledge about the local networks is essential for machine builders who want to export there machine to North America.

Once the parameters of a new panel have been defined, the right components have to be selected to fulfil the requirements. With Eaton's new "Control panel design guide according to UL 508A" this task becomes much easier. All devices required are listed in a structured breakdown with all the data you need in one place. Take a look!

Code changes affecting Short-Circuit Current Ratings based on the 2017 NEC®. The scope of this publication is limited to the most significant chapters, articles and parts of the 2017 NEC dealing with available short-circuit current and Short-Circuit Current Ratings (SCCRs). Each code section is noted as being a “REVISION” or “NEW” followed by an explanation on its significance, related NEC sections, what to look for to determine if there is Code compliance, and, if appropriate, a more detailed explanation of agency standards or equipment markings that impact short-circuit current ratings.

For several years, AZO CONTROLS has benefited from Eaton’s well-established product portfolio and extensive consultations and has successfully and efficiently managed a number of export projects in North America.

Although Eaton provides a wide range of specification tools and supporting literature, you may still need more information, especially if you are new to exporting to North America. In this case, a personal training or consultancy session may be the best way to answer your queries. Check out our training calendar or book your individual session here.