The patent pending MST Series is a modular parallel installed, SPD (Surge Protection Device).  Models are available for all standard electrical services and provide 100kA of surge energy handling per phase.

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• 100% Modular (Field replace/upgrade)

• Surge Ratings: 50kA or 100kA

• In 10/20kA

• Available in NEMA 3R, 4, 4X or 12 Enclosures

• Listed to ANSI/UL 1449 Standard

• 15 Year Warranty