A9-40-00-80 Contactor, 4 Pole 21A 240V AC Coil, EOL

The A9-40-00-80 is a 4-pole, non-reversing across-the-line contactor with 4 normally-open main poles, rated 21 A at 240 V, and a 230-240 V AC coil. It sits in the Contactors and Starters category, sub-category Electrical Contactors. The 21 A rating at 240 V means this contactor is sized for resistive or moderate inductive loads on 240 V line-to-line circuits — think heater banks, lighting contactor duty, or smaller motor loads where the AC-1 or AC-3 current fits inside that envelope. The 4 NO pole arrangement gives you four isolated switching paths, useful for multi-circuit grouping or star-delta applications where you need a dedicated pole per phase plus a spare. Coil is 230-240 V AC, so it pulls in reliably on a standard European or 240 V single-phase control supply. Dropout threshold on a contactor of this class typically runs around 0.6–0.7 × rated voltage; verify your control transformer sizing if the line runs long.