MB4000 is the best high track resistant material in the AltraSet product line. It is a flame retardant polyester molding compound with moderate strength, excellent electrical properties and exceptional arc and track resistance. Used where higher track resistance is critical – such as porcelain replacement in insulators or other electrical applications. Key features include Incline Plane Tracking of over 1,500 minutes and rated UL 94 5VA @1.65mm. UL file number E80533 Information provided by Mar-Bal, Inc. |