NP511EM (NEMA G-11) is very much like NP511 with the exception that it is easier to machine. It has the same thermal and electrical characteristics, meets all of the physical and electrical properties of NEMA G-11 and has higher arc resistance than NP511. NP511EM can be used in most applications where NP511 is used, but it is not recommended for cryogenic applications.
*The use temperature or temperature index is a recommendation only, and based upon experience in various applications. The maximum operating temperature is dependent upon the application and should be investigated prior to use.