ABB 1751-0-1633 1789 LI-20 Rocker “Light” Alpha Bs Description Description ABB 1751-0-1633 1789 LI-20 Rocker “Light” Alpha Bs Related products ABB 2TLA040001R1100 ABB 3HNE00313-1 ABB 1SFN075112R1000 ABB 2TLA040001R1400 ABB ACS550-01-038A-4 ABB 3BSE008516R1