MidNite Solar MNSPD-300-AC Surge Protection Device | Type 1 SPD for AC/DC Systems, Outdoor 4X

Overview

The MidNite Solar MNSPD-300-AC is a Type 1 surge protection device designed for both AC and DC power systems. It can shield service panels, load centers, or any location where the SPD connects to the protected equipment. It supports 120 VAC and 120/240 VAC circuits, making it suitable for a range of residential, commercial, or off‑grid configurations that involve mixed voltage setups. The unit emphasizes practical installation alongside standard electrical gear while delivering reliable surge management.

Designed for outdoor use, the MNSPD-300-AC combines a robust build with thoughtful protection. It carries a Type 4X environmental rating and is manufactured with a focus on durability in sun, rain, and dust. This device ships with a five year warranty and is ETL listed for both the US and Canada. Proudly made in the USA, it aligns with domestic manufacturing standards and local support networks.

Protection and Compatibility

• Type 1 device per UL1449 rev3
• Compatible with AC and DC systems to guard critical electrical paths
• Protects service panels, load centers, or direct-connected devices
• Supports 120 VAC and 120/240 VAC circuits

Durability, Compliance, and Support

• Outdoor-rated Type 4X enclosure for exposed sites
• ETL listed for US and Canada
• Made in the USA
• 5-year warranty
• Clear status indicators that reflect system type and protection status

Indicator Lights and System Behavior

Indicator lights contribute quick, at‑a‑glance status. When a DC unit is on a DC system, all lights activate; on an AC system, all lights illuminate together. If a DC unit is connected to an AC system, one indicator may illuminate, but the device remains safe and functional. This behavior helps technicians verify configuration during installation or inspection without interrupting service.

Practical Use and Installation Notes

Ideal for protecting critical gear in solar, storage, or mixed‑voltage environments, the MNSPD‑300‑AC provides a dependable layer of surge protection alongside existing safety systems. Consider its outdoor rating if protection is required at exterior service points or weather-exposed installations. Always follow local electrical codes and manufacturer recommendations when integrating into an existing system.