The ZoneMaster 300 is engineered to protect critical electronic systems from severe transient environments, providing decades of uninterrupted surge protection. A tested surge capacity of 300,000A assures a high level of protection from even the most severe lightning strikes.

• Up to 300,000 Amp Maximum Surge Current Protection
• Provides unmatches protection against catastrophic surges. ratingbased on the withstand and survival current of the unit, not the sum of the components.
• Integrated Diagnostics
• Each module provides visual indications of its operating status or miswiring
• Neutral-to-Ground Leakage Indicators
• Boldted Connections Securely Attach Modules Into Surge Current path
• No plug-in modules
• Large Surge Return Plate
• Both electrical and mechanical indicators display operational readiness of unit.
• Remote Monitoring Unit Available

• Large Surge Return Plate
• Protection modules are mounted on a surge return plate that accurately cancels the electromagnetic field during surge events.
• Fire Resistant Lightweight plastic Enclosure
• NEMA 1, 2, 2S, 4, 4X, and 13 rated. UL94-5V Flame class.
• Clear Unit Cover
• Allows user to monitor protection status without opening the unit.
• Dual Short Circuit and Thermal Fusing
• Maximum Operating Voltage
• 25% above nominal service voltage
• Operating Environment
• -40° to +85°C
• Ten-Year Product Warranty
• UL CSA Approved