The ABB AF52-30-11-13 is an IEC contactor from the AF-Line series, rated for 80 A continuous current at 600 VAC across three poles. The coil accepts 100-250 V AC or DC, which simplifies panel wiring when both supply types are present — one part covers either control voltage without a separate rectifier or coil changeout.
80 A in AC-1 duty (resistive load) is the headline number, but for motor switching the real figure is the AC-3 rating — typically around 65-70% of the AC-1 value for this frame size. That means it handles a 37 kW (50 HP) motor at 400 V three-phase without derating. The 600 VAC rating covers 480 V and 575 V systems common in North American industrial plants, so it's not limited to 400 V IEC panels. The 100-250 V AC/DC coil is the standout feature. On a typical 24 VDC panel you'd need a different contactor, but this one takes 120 VAC control transformers or 125 VDC battery-backed systems straight. No coil suppression polarity to worry about on DC — the built-in varistor handles that. Dropout voltage is around 70% of nominal, so a sag to 70 VAC won't drop the load. The AF40 frame is the physical footprint. The 1NO/1NC auxiliary contact block is factory-installed, so you don't need to order a separate side-mount for basic status feedback.
The AF40 frame is about 90 mm wide — three units wide on a standard 35 mm rail. For reversing or star-delta starters, the mechanical interlock clips between two units without extra hardware.