Contains 1 set of plastic insulators (top / bottom) and fixing screws to be used where the overload relay power terminals external dimension exceed the busbar external dimension.DocumentsWEG RW_E Series Overload Relays Brochure Related Products Quick view IBRW317 $2.64 MSRP: $4.00 Phase Barrier Quick view 6354C08G01 $6,686.53 MSRP: $8,371.76 Inter Phase Barrier Quick view LDRSF11 $24.29 MSRP: $37.40 Dc Switch Phase Barrier A Quick view LDM3SF13 $116.04 MSRP: $178.70 Phase Barriers 4P 100-200A Quick view LDM3SF12 $116.04 MSRP: $178.70 Phase Barriers 3P 100-200A