4 Wire Polaris 250 MCM-6 AWG Insulated Multi-Cable Connector with Mounting Holes, Either Side Wire Entry Polaris Insulated Multi-Cable Connectors have wire entry ports on both sides of the connector to allow for access from either side. Mounting holes at each end of the connector allow for direct isolated mounting to the trough, panel or wireway. IPLMD Series connectors are insulated with high-dielectric strength plastisol. Molded for precise fit and supplied with removable access plugs over the hex screws. Eliminates the need for cover and taping. Abrasion and chemical resistant. UV resistant. Will not support combustion. Mounting holes will accept a 1/4" bolt for 3/0 AWG and a 5/16" bolt for 250 MCM and 350 MCM. UL Listed 486B Wire Connector. AL9CU. Cold temperature rated to -45 degrees C, rated 600V, 90 degrees C. Dual rated for use with copper and/or aluminum cables. Not recommended for fine-stranded, flexible wire.