The ABB AF370-30-11-14 is a 3-pole contactor rated for 361 A, with a 250 V coil. It's a full-size power contactor for switching motor loads, resistive heaters, or other heavy AC loads in a control panel.
The 361 A rating is the conventional free-air thermal current (Ith) — the contactor's maximum continuous current in an open panel at 40 °C. For motor switching, derate to the AC-3 rating (typically around 300 A for this frame size), which governs the actual motor full-load current it can switch without accelerated contact wear. The 250 V coil is a control voltage — verify your control transformer or PLC output matches; common 230 V control circuits will pull this in, but a 24 VDC system won't.
This is a bolt-on contactor, not a DIN-rail snap-on — the AF370 frame uses screw terminals and a mounting plate. Plan for a 185 mm wide footprint and M8 bolting to the backplate. The 3-pole + 2 auxiliary contact configuration (30-11) gives one N.O. + one N.C. aux for status feedback or interlocking, which is standard for a reversing or star-delta starter.