Its headline rating is 12 A in AC-3 utilisation category at ≤440 V, which means it switches three-phase squirrel-cage motors up to that current under full-load starts and plugging/inching duty. The 48 V AC coil pulls in reliably at nominal voltage; the built-in 1 NC auxiliary contact gives you a feedback or interlock signal without adding a side-mount block.
Motor power coverage
Across common line voltages this contactor covers a 3 kW to 5.5 kW motor range: 3 kW at 220–230 V, 4 kW at 480 V, 4 kW at 500–600 V, 4 kW at 660–690 V, 5.5 kW at 380–415 V, and 5.5 kW at 440 V — all at 50/60 Hz. That spread makes it a versatile pick for a panel that sees mixed supply voltages, as long as the motor FLA falls within the AC-3 current limit.
Heat dissipation is 1.3 W, so no special ventilation is needed in a typical enclosure. Flame-retardance meets UL 94 V1 and NF F 16-101/102 requirements, which matters for rail and transit applications where fire-smoke-toxicity compliance is specified.