What it is and what it does
The Schneider Electric A9N00SR-84F is a three-phase reversing starter with a 120 V AC coil, supplied in an open-style format — no enclosure, just the contactor assembly ready for panel integration. The "3PH REV STR" designation means it switches the phase rotation to reverse a three-phase motor on command, a standard function for conveyor direction changes, pump rotation swaps, or any bidirectional motor load in a control cabinet.
What the ratings mean for fit
The 120 V AC coil voltage is the control-circuit spec — it governs what control transformer or PLC output drives the contactor. The open-style construction means the starter has no NEMA or IP-rated enclosure; it mounts inside a panel where the ambient environment is controlled. The three-phase reversing function uses two contactors mechanically interlocked to prevent simultaneous closure, a standard arrangement per IEC 60947-4-1 for reversing motor starters. The absence of a listed thermal overload relay in this order code means the buyer must supply one separately for motor overload protection.