The ABB MS497-100 is a 3-phase manual motor starter with an adjustable overload range of 80-100 A and a listed breaking capacity of 100 kA. In practice, this rating means the MS497-100 can be used directly on high-fault-capacity distribution boards without needing upstream current-limiting fuses, simplifying coordination and saving panel space.
Fit for a 100 A Motor Load
The 80-100 A adjustable overload range covers a 100 A motor load. Set the thermal overload to the motor's full-load current.
Wiring a 3-Phase Motor Through This Starter
Wiring the MS497-100 for a 3-phase motor follows the standard manual starter topology: line-side power feeds the incoming terminals, the adjustable overload relay senses motor current, and the load-side terminals connect to the motor contactor or directly to the motor leads. The integrated manual switch provides on/off control and acts as a disconnect. No separate overload relay is needed — the MS497-100 combines the switching and protection functions in one housing, which simplifies panel wiring and reduces component count.