ABB MS116-4.0 Manual Motor Starter

The ABB MS116-4.0 Manual Motor Starter is a compact 45 mm wide motor protection and manual switching device with a rated operating current (Ie) of 4.0 A, identified as model MS116-4.0 (ABB part 1SAM250000R1008). It supports operation from 220–240 VAC and 440–480 VAC, enabling use with common industrial power systems and three‑phase motor circuits, and it carries horsepower ratings of about 1/3 HP at 230–240 VAC and 1/2 HP at 440–480 VAC (with corresponding full‑load currents around 3.6 A and 2.5 A). The unit integrates protection and manual control in a single enclosure, helping conserve panel space and wiring while providing reliable shutdown in overload conditions. For enhanced safety during maintenance, the MS116-4.0 can function as a motor disconnect when used with compatible padlocks SA1 or SA3. This ABB starter is designed for small to medium motors in industrial control panels, pump, fan, and conveyor applications where compact protection, simple reset, and local manual control are valued. In short, MS116-4.0 delivers ABB’s trusted motor protection in a 45 mm format with clear current ratings, dual‑voltage compatibility, and accessory options that support secure lockout and straightforward integration into standard control circuits.