Coil voltage that matches the line
The Mitsubishi S-N220-COILAC500V is a 500 VAC replacement coil designed for the S-N220 series contactor. The 500 VAC rating means it drops in where the existing coil is wound for a 500 V control circuit — common in older European-spec panels or step-up transformer-fed control buses. If your S-N220 contactor is humming on a different voltage, this coil swaps in without pulling the contactor off the DIN rail.