MDI Mercury Contactor 60N0220A, single pole, 60 amps, 0 - 600 volts output, 220/60 volts AC Coil Voltage. MDI Mercury Relays can switch up to 600 volts AC based on amperage load. MDI relays can switch millions of cycles, out performing mechanical relays. MDI relays can operate in very high temperatures as well as cold temperatures, with no heat sink required. Mercury Contactors must be mounted in a vertical position in order to function. 1 Year Warranty. CE, UL approved and CSA listed.