Much better than. UL is an independent third party, one of several NRTLs, whereas the IEC process relies on self-certification.
When one this sentence into the German to translate wanted, would one the fact exploit, that the word order and the punctuation already with the German conventions agree.
My understanding for your consideration.
1. In Europe, the term "UL listed, UL recognized, UL certified " are NOT used by IEC.
In US , the term "Type tested, Partial type tested ..." are NOT used by ANSI, IEEE, UL, NEMA ....
1.1 They work independently. Their test Report/Certificate are NOT interchangeable.
2. In Europe, the manufacturer "Type test" their new proto-type product (e.g. ACB, MCCB, Control gear system ...) by NRTL to IEC Std. The lab issues the Certificate. With the Certificate, the manufacturer may print the CE marking on their component (e.g. ACB... or Control gear system). The product/system is acceptable/for sales without having to re-Type test, throughout Europe.
2.1 ReType test is Not required throughout the life of the production.
3. In US, the manufacturer submits their new proto-type product (e.g. ACB, MCCB, contactor ...) to UL to be tested to ANSI, IEEE, UL, NEMA ... Std for (UL listing, UL recognize). UL issues the Certificate. With the Certificate, the manufacturer may print the UL marking on their component (e.g. ACB, MCCB, Contactor ...). The product is acceptable/for sales without having to re-test, throughout US and Canada.
3.1 Factory re-inspection during the production.
3.2 UL keeps the Register of products that are "UL Listed or UL Recognized".
Che Kuan Yau (Singapore)
OSHA's Nationally Recognized Testing Laboratory (NRTL) Program
Recognizes private sector organizations to perform certification for certain products to ensure that they meet the requirements of both the construction and general industry OSHA electrical standards. Link
NRTL's include UL, CSA, Factory Mutual, TÜV SÜD America Inc., etc.
The OSHA webpage indicates which tests each NRTL has qualified. As OSHA does not recognize IEC / EU standards, none of the NTRL's capabilities to test to IEC standards are stated here.
For US purposes the OSHA NRTL list rules. As Mr Che Kuan Yau (Singapore) states the CE mark is very different.
Example
Flygt sewage pumps are sold world wide. The type certification in the FM listing (below) is not useful in meeting IEC/EU requirements. This product also holds European certifications and a CE stamp, which I am not going to repeat here, the EU/IEC/CE approvals are not assured to satisfy codes requirements in the US.
Understand that there is a difference in being “equivalent” and being “acceptable”. The Type-Testing certification is essentially equivalent to listing by an NRTL (Nationally Recognized Testing Lab, of which UL is the best known) in the US. But having a Type-Testing certificate in an IEC country is NOT an acceptable substitute for an NRTL listing here, and an NRTL listing here is NOT an acceptable substitute for a Type-Testing certificate in an IEC conforming country. So the equivalency might be true, but is irrelevant from an acceptability perspective.
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden
