DBR-6 Direct Bury Splice Kit 600 Volts DBY-6 and DBR-6 are UL Listed and CSA Certified for 600V direct bury and submersion applications. UL File No. E102356 and CSA File No. LR91920. Each kit makes two splices. 3M™ Direct Bury Splice Kit DBR-6 600V, 2 Tubes 2 Scotchlock™ R connectors, 25 kits per case. These 3M underground electrical wire connectors splice and effectively moisture-seal two or more conductors for remote-control circuits in irrigation and landscape lighting systems. DBR-6 Direct Bury Splice Kit Literature (PDF)