Where this class is used
The 1SBL143001R8301: Electrical contactors in this ABB line carry the control-coil / power-contact job in a panel: a low-energy command on the coil closes the main poles to energise a downstream load, then drops them out on command or loss of coil voltage. In a motor or heating circuit that means the contactor is the switching element the overload relay and the control circuit both sit behind, so its coil voltage, pole count, and current class are what fix it into the BOM line — not the packaging label.
Sourcing and fit
The ledger carries no production-status entry for 1SBL143001R8301, so active manufacture is not asserted here; the practical sourcing posture for this MPN is to specify it into the BOM line and quote to order against an RFQ. Pin-compatible alternatives inside the ABB electrical-contactors family are not named in the evidence on hand, so no cross-reference is offered — verify the coil voltage, pole count, and current class against the build sheet before committing a substitute. Compliance documentation (RoHS, REACH, UL, IEC) is not present in the ledger either; request the declaration pack with the RFQ if the build needs it on file.