What lands on the bench
The ABB 1SBL141001R8801 is an electrical contactor catalogued under Contactors and Starters within the broader Circuit Breakers, Fuses & Protection group, and the part is identified as a contactor by ASEA BROWN BOVERI on the line card.
Where this class of part sits in a panel
Electrical contactors in this ABB catalog segment are the workhorse switching elements that sit on the DIN backplane between a circuit breaker and the motor or heater load — coil energised from the control circuit, power contacts closing the line to the load. For MRO spares, query the Electrical Contactors family in and cross-check against the BOM line when a contactor is faulted and needs a one-for-one.