Non-UL Recognized Components in

[hayabu]

I have a PCB that has a housing which is fire retardant according to EVS-EN IEC 61010-2-201:2018 §9.3.2, which states, "Containment of a fire within the equipment, should it occur." Can I use non-UL recognized components that are >100W (e.g., DC-DC converters, fuses), arguing that the housing encapsulates the fire? UL 3100 is not entirely clear on this point.

 

[petersonra]

This is mostly a forum about the US National Electrical Code. Design of circuit boards is not covered by that code.

 

[Jraef]

UL generally is less stringent on things like PC boards, but if your intent is to sell a product in North America, plastic electrical enclosures must have UL flammability ratings, usually something like UL 94. There has been a lot of "merging" of UL standards with IEC standards, but I have no idea if those IEC standards are among them. But from the Wiki page on UL 94, it says this:

UL-94 is now harmonized with IEC 60695-11-10 and 60695-11-20 and ISO 9772 and 9773.[2]