What it is
The ABB 1SBL16100R8101 sits in the Contactors and Starters line as an electrical contactor — the panel-side switching element that opens and closes a power circuit in response to a control signal.
Where the class is used
Electrical contactors in this class carry motor and heating loads in control panels — engaged by a low-power coil signal and switching the higher-power line downstream of the breaker. Mounting is DIN-rail or panel-fastened within the Contactors and Starters block of the enclosure.