The MidNite Solar 300V AC Surge Protector Device (MNSPD) is a Type 2 device per UL1449 rev3 and has an outdoor rating of 4X for outdoor use. Protection for 120 VAC and 120/240 VAC circuits. Listed by ETL for US & Canada.
The MidNite Solar 300V DC Surge Protector Device (MNSPD) is a Type 2 device per UL1449 rev3 and has an outdoor rating of 4X for outdoor use. Protection for Classic and other charge controllers, off grid PV combiners and 120/240 VAC circuits. Listed by ETL for US & Canada.
The DC SPD will work well on all DC 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 are identical.