MNSPD-300-AC Solar Surge Protector Device 300VAC for Midnite Solar MNSPD-300-ACMNSPD 300 AC Solar Surge Protector Device 300VAC for Midnite Solar MNSPD 300 AC Feature: 1. MNSPD 300 AC Surge Protector For all AC circuits up to 300 volts and any 120 240 VAC circuit. The AC SPD will work well on all AC circuits up to 300 volts as well as any 120 240 VAC circuits. The difference between the AC and DC SPD is the way the LED's are powered. The protection side of things is identical. 2. The Solar Surge Protector (MNSPD) is a Class 1