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.
- 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?