The ABB AF52-30-11-12 is a 3-pole electrical contactor rated at 54 A, with a coil voltage range of 48-130 V AC/DC. It sits in the Contactors and Starters category, subcategory Electrical Contactors.
What the 54 A rating means for fit
For motor switching, this contactor is sized for a motor full-load current up to roughly that value — expect to derate if the ambient in the panel exceeds 40 °C or if the duty cycle includes frequent starts. The 48-130 V AC/DC coil gives you flexibility on control voltage; it holds in at the nominal voltage and drops out reliably below the lower threshold, which matters for undervoltage protection schemes.