In this paper, the author examines the various characteristics of electric drive enclosures labeled NEMA 1 and UL Type 1, detailing the differences and similarities, with an explanation of why the NEMA 1 enclosure rating does not meet the new UL Type 1 enclosure rating, while products with the UL rating do indeed meet and exceed all relevant requirements of the NEMA specification for use in the U.S. industrial and building markets.
Topics Discussed:
- Enclosed drive market overview
- Why is an enclosure / kit required for IP20 (open) drives?
- What to look for in available kits in the market today
- What is and why is there a new drive standard UL61800-5-1?