The ABB EHDB520C-2 is a 3-pole contactor rated for 520 A at 240 V.
As a 3-pole contactor at 520 A, this unit is panel-mounted, typically on a backplate or DIN-rail adapter. The 240 V coil voltage is standard for North American control circuits. Verify coil suppression polarity if the contactor drives inductive loads downstream — the same coil circuit may share auxiliary contacts. Spring-cage or screw terminals accept lugged cable; strip length and torque per the manufacturer's mounting instructions.