What it is on the BOM
The ABB 1SBL177001R1110 is a 3-pole electrical contactor on the Contactors and Starters line, sized for the panel-builder slot between breakers and motor loads.
Sourcing posture
Specified into a running BOM or a spare-parts shelf, the 1SBL177001R1110 is handled to order — submit the RFQ with the order code, panel location, and quantity, and the supply channel returns a quote.
Where this class goes in the panel
A 3-pole contactor in this slot carries the line-side switching duty between the branch protection and the load — motor starters, lighting banks, or heater strings — with the coil circuit handled on the control side of the same panel section.