600-250 Insulated In-Line Splice Power ConnectorPre Insulated Mechanical Splice Cross Reference: Nsi ISR 600 Greaves PBS 600 Dual rated for both aluminum and copper conductors the Morris Products family of Pre Insulated Power Distribution Connectors makes insulated wire splicing easy and secure. ANSI C119. 4 and cULus 486b Listed and designed for use in areas such as troughs, gutters, panels, ducts and wireways these factory pre insulated mechanical connectors eliminates the need for time consuming