EasySurge Guardian HVAC Surge Protector (Single-Phase, 80–260 VAC, 50A, 20kA) | Micro-Air

What it does

EasySurge™ Guardian shields compressors, control boards, and electronics from damaging spikes and unsafe voltage. It disconnects during over/under-voltage events, then automatically restores power after a safe delay you control. Ideal for central AC, heat pumps, air handlers, mini-splits, and RV HVAC circuits up to 50 A.

Hardware Features

• Clear status LEDs: green/red indicators for Wi-Fi, Protection OK, Protection Failed (Replace), and Over/Under-Voltage events.
• Off-grid friendly: easy integration with solar/backup systems.
• Large terminals: accepts 6–14 AWG conductors with published torque specs.
• Weather-resistant enclosure: protects against rain, sleet, ice, and UV.
• Surge handling: 20 kA nominal (15 strikes) and 50 kA single-strike; 50 kA short-circuit current rating.
• Sealed design: rubber channel lip gasket for a dust-proof seal.
• Max load: 50 A single-phase; two ½” NPT conduit connections.
• Latching relays for improved reliability.
• Adjustable mounting flanges for flexible installs.

Phone App Features (Micro-Air Connect)

• Adjustable restore delay: 5–600 seconds.
• Adjustable voltage limits: Over-voltage 125–280 VAC; Low-voltage 80–230 VAC.
• Event logging: time-stamped history of last 32 events (power on, low/high voltage, relay on, etc.).
• Cloud monitoring with push alerts for failed protection.
• Real-time line voltage display plus 1-minute and 3-minute min/max/avg stats.
• Local Bluetooth access when Wi-Fi isn’t available.
• Contractor mode for service access.
• Counts voltage events since last power-on.

What’s in the box

• EasySurge™ Guardian unit
• Mounting hardware & instructions

Key Specifications

Basic Wiring

L1, L2 and Ground from the breaker panel into EasySurge; matching L1, L2 and Ground from EasySurge to the HVAC load. Power off before wiring and follow local code; installer/technician recommended.