3M™ Modular Aluminum Lug. Series Modular Splicing Systems is a fully shielded 600 amp separable connector systems which meets the requirements of ANSI/IEEE Standard 386 - "Separable Insulated Connector Systems." These modular kits are available for splicing, dead-ending and connecting to deadfront apparatus such as transformers, switches and switchgear equipped with 600 Amp bushings.