The SX-N240 shall be housed in a magnetic shielding NEMA steel enclosure. It shall operate from 240 volts AC and have a barrier strip accessible through knock-outs in the enclosure for hardwiring power input and output connections. Overall dimensions shall be 12.0" H x 12.0" W x 4.0" D. Weight shall be 14 pounds. The SX-N240 shall have a load rating of 20 amps at 240 volts, a self-test circuit with visual indicator and provide Advanced Series Mode power protection and EMI/RFI filtering. It shall withstand at least 1000 occurrences of surge pulse voltages up to 6000 volts.