These 16 AWG powder coated steel building entrance terminals feature reliable 66 Block Style Connector for both input and output terminals. Connectors can accept up to 20 AWG line terminations. Also included are multiple external and internal ground lugs. Stackable to allow for future expansion. Equipped with internal fuse link. UL497 Approval is standard on all terminals. Accommodates industry standard 5 Pin Protection Modules. 5 Pin Module Sold Separately. Loaded Units Available.