Inverters

Fox ESS H3 Smart

Name: Fox ESS H3 Smart
Brand: Fox ESS

5–15 kW · best for three phase homes adding a battery now or later

8.8Excellent#15 of 59 inverter series we rank · EnergyUpgrade Score out of 10

Why it scores 8.8.

Each part comes from the datasheet with a published rule; anything not stated scores zero.

Efficiency
6.3 · 30%
Every point of efficiency is solar you keep, every day for 10+ years.
Rule: Maximum efficiency on the datasheet: 96% scores 0, 99% scores 10.
MPPTs for split roofs
10.0 · 20%
Each MPPT runs one roof face independently, so east and west panels don't drag each other down.
Rule: Number of MPPT trackers: 1 scores 0, 2 scores 5, 3 or more scores 10.
Heat tolerance
10.0 · 20%
Inverters on hot walls throttle or fail early. A higher operating limit means more headroom.
Rule: Highest operating temperature: 45°C scores 0, 60°C scores 10.
Room for more panels
10.0 · 15%
How much panel capacity the inverter accepts, so you can oversize for winter and cloudy days.
Rule: Maximum PV input divided by rated AC output: 1.2x scores 0, 1.5x or more scores 10. Rebate rules allow panels up to 133% of the inverter, so more than 150% adds little.
Weather sealing
9.0 · 15%
Most Australian inverters live outdoors.
Rule: IP66 or better scores 10, IP65 9, IP55 4, lower 0.

7 approved models · Australian datasheet

Sizes: 5–15 kW
Type: Hybrid
Phase: Three phase
Takes a battery: Yes
Maximum efficiency: 97.9%
European weighted efficiency: 97.2%
Panel headroom (max PV ÷ rated AC): 202%
MPPT trackers: 3
Backup output: 15000 VA (switch time <20 ms)
IP rating: IP65
Highest operating temperature: 60°C
Cooling: Natural
Weight: 34 kg
Warranty (as printed): 10 year
Compatible batteries: Fox ESS Lithium-Ion high-voltage battery (100 ~ 800 V, CAN)