ABB 1751-0-1724 1789 LI-21 Rocker “Light” Alpha Bs Description Description ABB 1751-0-1724 1789 LI-21 Rocker “Light” Alpha Bs Related products ABB 2TLA040037R0800 ABB 2TLA042023R0100 ABB 1SFN075112R1000 ABB 2TLA040001R1000 ABB 2TLA042021R8000 ABB 2TLA042021R8100