The ABB 1SFA899002R1072 is a PSLW-72 terminal enlargement — a hardware accessory that expands the wiring capacity of the PSLW-72 series phase sequence relay. Its listed function is auto phase sequence detection, meaning the relay it attaches to automatically identifies the correct phase rotation (-L2-L3 or reversed) without manual test-button intervention. For a commissioning engineer, that saves a trip to the panel: the relay self-checks on power-up and flags a miswire before the motor sees voltage.
The terminal enlargement snaps onto the PSLW-72 base unit — no tools needed for the mechanical fit, though the wiring itself needs a screwdriver. The CAD dimensional drawing (2CDC001079B0201,) gives the exact footprint for panel layout; account for the added height above the base relay when planning DIN-rail spacing.
Listed as Active in the product lifecycle — ABB continues to manufacture this order code, no phase-out notice on record. For compliance documentation, the part follows EU Directive 2011/65/EU and Amendment 2015/863 (RoHS,), and carries a WEEE category of 5 (Small Equipment,) with a B2B classification. The TSCA certificate (2CMT2023-006524,) and Conflict Minerals Reporting Template (9AKK108467A5658,) are available for tender or compliance audits.
Sourcing reality
This is a current-production accessory, so it sources through standard ABB distribution channels. No second-source or pin-compatible alternative exists in the PSLW-72 family; the terminal enlargement is the only wiring-expansion option for that relay base.